{"title":"2.5\" (63mm)","description":null,"products":[{"product_id":"i-30499981-granatelli-motor-sports-electronic-exhaust-cutout-kit-307525-stainless-steel-weld-in-style-2-50-inches","title":"Granatelli 2.5\" Electric Exhaust Cutout Kit, Stainless Steel Weld-In – 307525","description":"\u003ch2\u003e\u003cstrong\u003eGranatelli 2.5 Inch Electronic Exhaust Cutout Kit\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSKU: 307525\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDominate Your Drive—Roar or Ride Silent\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUnleash full control over your exhaust with the Granatelli 2.5″ weld-in electronic cutout. Whether you're easing through traffic or launching into full-throttle mode, one push of the Smart‑Chip rocker switch switches your tone instantly. Built rugged for performance, refined for sound—this kit is the silent assassin that hits like a tank on command.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWhy This Cutout Stands Out\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRace‑Grade Construction\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eCNC‑machined 6061 aircraft‑grade aluminum body resists heat and warping\u003c\/li\u003e\n\u003cli\u003eCorrosion‑resistant stainless‑steel butterfly plates and heavy-duty shafts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart, One‑Touch Reliability\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eSmart‑Chip motor with rocker switch: no holding required\u003c\/li\u003e\n\u003cli\u003eAutomatic stop protects gears and motor from wear\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Style \u0026amp; Fit\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003ePolished stainless-steel turndown with sharp 45° slant\u003c\/li\u003e\n\u003cli\u003e360° rotatable V‑band clamp for perfect exit alignment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull‑Cycle Performance\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eHigh‑torque DC gear‑reduction motor with carbon‑steel gears for consistent operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete, Clamp‑On Kit\u003c\/strong\u003e\n\u003cul\u003e\n\u003cli\u003eIncludes cutout, Y‑pipe, wiring harness, rocker switch, gaskets, band clamp \u0026amp; install hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eBuilt for Builders Who Demand More\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis cutout is crafted for V‑8s, turbo monsters, and street-strip hybrids—you name it. Weld it in, wire it up, and deploy the tone that matches your mood: silent precision, or 100‑percent unfiltered roar. No compromise. Just pure sound control, built tough for the long haul.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eSizing \u0026amp; Fitment\u003c\/h3\u003e\u003cp\u003eMeasure the outside diameter of your exhaust pipe at the mounting point. If it measures 2.5\", this kit is the right match. Running a true dual exhaust? Use one cutout per side, or choose the \u003ca href=\"\/products\/i-30499984-granatellimotor-sportselectronic-exhaust-cutout-kit-307525k-stainless-steel-weld-in-2-50\"\u003edual 307525K kit\u003c\/a\u003e. Can't weld? The \u003ca href=\"\/products\/i-30499923-granatellielectronic-exhaust-cutout-kit-302525-ss-slip-fit-2-50-inches\"\u003e302525 slip-fit version\u003c\/a\u003e installs with clamps.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhere to Mount It\u003c\/h3\u003e\u003cp\u003eMount the cutout at least 18 to 24 inches after the catalytic converters, and away from any O2 sensor. Aim the turndown toward the rocker panel, away from fuel and brake lines. For the best sound, mount it after the X-pipe or H-pipe.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eLegal Note\u003c\/h3\u003e\u003cp\u003eMany states, including California, prohibit exhaust cutouts on vehicles driven on public roads. Keep the cutout closed on the street and open it only at sanctioned off-highway events. Never install a cutout upstream of a catalytic converter.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDo I have to hold the switch?\u003c\/strong\u003e\u003cbr\u003eNo. The Smart-Chip one-touch rocker completes the valve's travel with one tap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003cbr\u003eWeld-in kits need welding equipment or a muffler shop. Prefer to bolt it on? The \u003ca href=\"\/products\/i-30499923-granatellielectronic-exhaust-cutout-kit-302525-ss-slip-fit-2-50-inches\"\u003e302525\u003c\/a\u003e is a slip-fit version.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the warranty?\u003c\/strong\u003e\u003cbr\u003e90 days, with optional 1-, 2- or 3-year extended coverage available at checkout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it add horsepower?\u003c\/strong\u003e\u003cbr\u003eOpening the cutout reduces backpressure. Gains depend on your engine, headers and tune.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNew to cutouts?\u003c\/strong\u003e Read our \u003ca href=\"\/blogs\/news\/2-5-inch-exhaust-cutout-guide\"\u003e2.5 Inch Exhaust Cutout Guide\u003c\/a\u003e for choosing the right size and type, mounting and state laws.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhy Choose Granatelli Motor Sports?\u003c\/h3\u003e\u003cp\u003eGranatelli Motor Sports develops performance components for real-world street, street\/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":46910311956636,"sku":"307525","price":213.6,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/F198645438.jpg?v=1779219156"},{"product_id":"i-30499984-granatellimotor-sportselectronic-exhaust-cutout-kit-307525k-stainless-steel-weld-in-2-50","title":"Granatelli Dual 2.5\" Electric Exhaust Cutout Kit, Stainless Steel Weld-In – 307525K","description":"\u003ch2\u003e\u003cstrong\u003eGranatelli Motor Sports 307525K Dual Electronic Exhaust Cutout Kit – 2.5\" Weld‑In\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eSKU: 307525K\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003ePush your performance limits with the Granatelli 307525K dual cutout kit—an authentic fusion of raw power and refined control. This premium system lets you shift from stealth to soundtrack with a single flip.\u003c\/p\u003e\n\n\u003ch3\u003e\u003cstrong\u003eKey Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAviation‑Grade CNC 6061 Aluminum Body\u003c\/strong\u003e for lightweight strength and heat resistance.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart‑Chip One‑Touch Motor Control\u003c\/strong\u003e ensures full open\/close operation without holding down the switch.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDependable DC Gear Reduction Motor\u003c\/strong\u003e with high‑torque and high‑temperature carbon steel gears—guaranteed total operation every time.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStainless Steel Butterfly Plates \u0026amp; Shafts\u003c\/strong\u003e built to endure extreme exhaust heat.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e360° Rotatable V‑band Clamp \u0026amp; Polished 45° Turndowns\u003c\/strong\u003e for perfect alignment and exhaust flow tuning.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeld‑In Installation (2.50″ tubing)\u003c\/strong\u003e delivers a clean, factory-style installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eComplete Kit\u003c\/strong\u003e: includes hardware, gaskets, wiring harnesses, and dual turndowns—everything you need.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n  \u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eTubing Diameter\u003c\/td\u003e\n\u003ctd\u003e2.50″ (63 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eCutout Style\u003c\/td\u003e\n\u003ctd\u003eElectric, weld‑in\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFlange Material\u003c\/td\u003e\n\u003ctd\u003eCNC 6061 aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eFinish\u003c\/td\u003e\n\u003ctd\u003eNatural (polished aluminum \u0026amp; stainless steel)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eQuantity\u003c\/td\u003e\n\u003ctd\u003eDual kit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003eComponents Included\u003c\/td\u003e\n\u003ctd\u003eCutouts, turndowns, V‑bands, hardware, gaskets, harnesses\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cbr\u003e\n\u003cp\u003e\u003cem\u003e*This weld‑in kit features tubing with a 2.50″ inside diameter, polished stainless steel turndowns with 45° discharge, and all necessary hardware—delivered ready to install.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhether you crave subtle cruising or aggressive sound, the \u003cstrong\u003eGranatelli 307525K\u003c\/strong\u003e gives you full command. Engineered with top-tier materials and Smart‑Chip intelligence, it delivers power, precision, and presence—on demand.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eSizing \u0026amp; Fitment\u003c\/h3\u003e\u003cp\u003eMeasure the outside diameter of your exhaust pipe at the mounting point. If it measures 2.5\", this kit is the right match. This dual kit is for true dual exhaust systems, one cutout per side. Single exhaust? Choose the \u003ca href=\"\/products\/i-30499981-granatelli-motor-sports-electronic-exhaust-cutout-kit-307525-stainless-steel-weld-in-style-2-50-inches\"\u003esingle 307525 kit\u003c\/a\u003e. Can't weld? The \u003ca href=\"\/products\/i-30499924-granatelli-dual-electronic-exhaust-cutout-kit-302525k-ss-slip-fit-2-50-inches\"\u003e302525K slip-fit version\u003c\/a\u003e installs with clamps.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhere to Mount It\u003c\/h3\u003e\u003cp\u003eMount the cutout at least 18 to 24 inches after the catalytic converters, and away from any O2 sensor. Aim the turndown toward the rocker panel, away from fuel and brake lines. For the best sound, mount it after the X-pipe or H-pipe.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eLegal Note\u003c\/h3\u003e\u003cp\u003eMany states, including California, prohibit exhaust cutouts on vehicles driven on public roads. Keep the cutout closed on the street and open it only at sanctioned off-highway events. Never install a cutout upstream of a catalytic converter.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eDo I have to hold the switch?\u003c\/strong\u003e\u003cbr\u003eNo. The Smart-Chip one-touch rocker completes the valve's travel with one tap.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003cbr\u003eWeld-in kits need welding equipment or a muffler shop. Prefer to bolt it on? The \u003ca href=\"\/products\/i-30499924-granatelli-dual-electronic-exhaust-cutout-kit-302525k-ss-slip-fit-2-50-inches\"\u003e302525K\u003c\/a\u003e is a slip-fit version.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the warranty?\u003c\/strong\u003e\u003cbr\u003e90 days, with optional 1-, 2- or 3-year extended coverage available at checkout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it add horsepower?\u003c\/strong\u003e\u003cbr\u003eOpening the cutout reduces backpressure. Gains depend on your engine, headers and tune.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNew to cutouts?\u003c\/strong\u003e Read our \u003ca href=\"\/blogs\/news\/2-5-inch-exhaust-cutout-guide\"\u003e2.5 Inch Exhaust Cutout Guide\u003c\/a\u003e for choosing the right size and type, mounting and state laws.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhy Choose Granatelli Motor Sports?\u003c\/h3\u003e\u003cp\u003eGranatelli Motor Sports develops performance components for real-world street, street\/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":46914235007132,"sku":"307525K","price":395.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/F198645439.jpg?v=1779219949"},{"product_id":"granatelli-vacuum-pressure-controlled-electronic-exhaust-cutout-309625","title":"Granatelli 2.5\" Vacuum\/Pressure-Controlled Exhaust Cutout Kit, Stainless Steel Weld-In – 309625","description":"\u003ch2\u003e\u003cstrong\u003eGranatelli 2.5\" Vacuum\/Pressure-Controlled Exhaust Cutout Kit – Stainless Steel Weld-In\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSKU: 309625\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOpen or close your exhaust from anywhere in the cab with the Granatelli 309625 vacuum\/pressure-controlled exhaust cutout kit. A wireless remote signals the vacuum control box, and the included vacuum pump drives the cutout open or closed. Because the kit supplies its own vacuum, it doesn't depend on engine vacuum, so it works the same on boosted engines and big-cam builds.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless remote control:\u003c\/strong\u003e Open or close the cutout from the driver's seat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded vacuum pump:\u003c\/strong\u003e No engine vacuum required, so performance doesn't change with boost or cam choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum control box, lines and fittings:\u003c\/strong\u003e Everything needed to plumb the system is in the kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-machined 6061 aluminum body:\u003c\/strong\u003e With a stainless steel butterfly plate and shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolished 45° turndown with 360° V-band clamp:\u003c\/strong\u003e Rotate the exit to clear lines, the floor and tires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeld-in installation:\u003c\/strong\u003e Welds into your exhaust for a permanent, leak-free joint.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutout size\u003c\/td\u003e\n\u003ctd\u003e2.5\" (63 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003eWireless remote and vacuum control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVacuum source\u003c\/td\u003e\n\u003ctd\u003eIncluded vacuum pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody\u003c\/td\u003e\n\u003ctd\u003eCNC-machined 6061 aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eButterfly plate and shaft\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurndown\u003c\/td\u003e\n\u003ctd\u003ePolished stainless steel, 45°, 360° adjustable V-band clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eWeld-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit includes\u003c\/td\u003e\n\u003ctd\u003eCutout, turndown, V-band clamp, vacuum pump, vacuum control box, wireless remote, vacuum lines and fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eSizing \u0026amp; Fitment\u003c\/h3\u003e\u003cp\u003eMeasure the outside diameter of your exhaust pipe at the mounting point. If it measures 2.5\", this kit is the right match. Running a true dual exhaust? Use one cutout per side, or choose the \u003ca href=\"\/products\/granatelli-vacuum-pressure-controlled-309625k\"\u003edual 309625K kit\u003c\/a\u003e. Can't weld? The \u003ca href=\"\/products\/granatelli-vacuum-pressure-controlled-electronic-exhaust-cutout-309525\"\u003e309525 slip-fit version\u003c\/a\u003e installs with clamps.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhere to Mount It\u003c\/h3\u003e\u003cp\u003eMount the cutout at least 18 to 24 inches after the catalytic converters, and away from any O2 sensor. Aim the turndown toward the rocker panel, away from fuel and brake lines. For the best sound, mount it after the X-pipe or H-pipe. Route the vacuum lines away from the exhaust so heat can't damage them.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eLegal Note\u003c\/h3\u003e\u003cp\u003eMany states, including California, prohibit exhaust cutouts on vehicles driven on public roads. Keep the cutout closed on the street and open it only at sanctioned off-highway events. Never install a cutout upstream of a catalytic converter.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow is it controlled?\u003c\/strong\u003e\u003cbr\u003eWith a wireless remote that operates the vacuum control box, so you can open or close the cutout from the driver's seat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need engine vacuum?\u003c\/strong\u003e\u003cbr\u003eNo. The kit includes its own vacuum pump, so it works the same on boosted, big-cam and low-vacuum engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVacuum or electric: which should I choose?\u003c\/strong\u003e\u003cbr\u003eBoth open and close from the cab. The vacuum kit uses a wireless remote and its own pump; the electric kit uses a motor on the cutout and a one-touch rocker switch. Compare the \u003ca href=\"\/products\/i-30499981-granatelli-motor-sports-electronic-exhaust-cutout-kit-307525-stainless-steel-weld-in-style-2-50-inches\"\u003eelectric 307525 kit\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003cbr\u003eWeld-in kits need welding equipment or a muffler shop. Prefer to clamp it on? The \u003ca href=\"\/products\/granatelli-vacuum-pressure-controlled-electronic-exhaust-cutout-309525\"\u003e309525\u003c\/a\u003e is a slip-fit version.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the warranty?\u003c\/strong\u003e\u003cbr\u003e90 days, with optional 1-, 2- or 3-year extended coverage available at checkout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it add horsepower?\u003c\/strong\u003e\u003cbr\u003eOpening the cutout reduces backpressure. Gains depend on your engine, headers and tune.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNew to cutouts?\u003c\/strong\u003e Read our \u003ca href=\"\/blogs\/news\/2-5-inch-exhaust-cutout-guide\"\u003e2.5 Inch Exhaust Cutout Guide\u003c\/a\u003e for choosing the right size and type, mounting and state laws.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhy Choose Granatelli Motor Sports?\u003c\/h3\u003e\u003cp\u003eGranatelli Motor Sports develops performance components for real-world street, street\/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":46914312568988,"sku":"309625","price":154.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/309625_309530_5_e81a1c4c-5a8a-428a-a1c5-e91fc13d8f55.png?v=1785280303"},{"product_id":"granatelli-vacuum-pressure-controlled-309625k","title":"Granatelli Dual 2.5\" Vacuum\/Pressure-Controlled Exhaust Cutout Kit, Stainless Steel Weld-In – 309625K","description":"\u003ch2\u003e\u003cstrong\u003eGranatelli Dual 2.5\" Vacuum\/Pressure-Controlled Exhaust Cutout Kit – Stainless Steel Weld-In\u003c\/strong\u003e\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eSKU: 309625K\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eOpen or close your exhaust from anywhere in the cab with the Granatelli 309625K vacuum\/pressure-controlled exhaust cutout kit. A wireless remote signals the vacuum control box, and the included vacuum pump drives two cutouts open or closed. Because the kit supplies its own vacuum, it doesn't depend on engine vacuum, so it works the same on boosted engines and big-cam builds. This dual kit includes a cutout for each side of a true dual exhaust.\u003c\/p\u003e\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless remote control:\u003c\/strong\u003e Open or close the cutout from the driver's seat.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncluded vacuum pump:\u003c\/strong\u003e No engine vacuum required, so performance doesn't change with boost or cam choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVacuum control box, lines and fittings:\u003c\/strong\u003e Everything needed to plumb the system is in the kit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCNC-machined 6061 aluminum body:\u003c\/strong\u003e With a stainless steel butterfly plate and shaft.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePolished 45° turndown with 360° V-band clamp:\u003c\/strong\u003e Rotate the exit to clear lines, the floor and tires.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeld-in installation:\u003c\/strong\u003e Welds into your exhaust for a permanent, leak-free joint.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h3\u003e\u003ctable border=\"1\" cellpadding=\"6\" cellspacing=\"0\"\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCutout size\u003c\/td\u003e\n\u003ctd\u003e2.5\" (63 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConfiguration\u003c\/td\u003e\n\u003ctd\u003eDual (one cutout per side)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl\u003c\/td\u003e\n\u003ctd\u003eWireless remote and vacuum control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVacuum source\u003c\/td\u003e\n\u003ctd\u003eIncluded vacuum pump\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBody\u003c\/td\u003e\n\u003ctd\u003eCNC-machined 6061 aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eButterfly plate and shaft\u003c\/td\u003e\n\u003ctd\u003eStainless steel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTurndown\u003c\/td\u003e\n\u003ctd\u003ePolished stainless steel, 45°, 360° adjustable V-band clamp\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation\u003c\/td\u003e\n\u003ctd\u003eWeld-in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKit includes\u003c\/td\u003e\n\u003ctd\u003eTwo cutouts, turndowns, V-band clamps, vacuum pump, vacuum control box, wireless remote, vacuum lines and fittings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eSizing \u0026amp; Fitment\u003c\/h3\u003e\u003cp\u003eMeasure the outside diameter of your exhaust pipe at the mounting point. If it measures 2.5\", this kit is the right match. This dual kit is for true dual exhaust systems, one cutout per side. Single exhaust? Choose the \u003ca href=\"\/products\/granatelli-vacuum-pressure-controlled-electronic-exhaust-cutout-309625\"\u003esingle 309625 kit\u003c\/a\u003e. Can't weld? The \u003ca href=\"\/products\/granatelli-vacuum-pressure-controlled-309525k\"\u003e309525K slip-fit version\u003c\/a\u003e installs with clamps.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhere to Mount It\u003c\/h3\u003e\u003cp\u003eMount the cutout at least 18 to 24 inches after the catalytic converters, and away from any O2 sensor. Aim the turndown toward the rocker panel, away from fuel and brake lines. For the best sound, mount it after the X-pipe or H-pipe. Route the vacuum lines away from the exhaust so heat can't damage them.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eLegal Note\u003c\/h3\u003e\u003cp\u003eMany states, including California, prohibit exhaust cutouts on vehicles driven on public roads. Keep the cutout closed on the street and open it only at sanctioned off-highway events. Never install a cutout upstream of a catalytic converter.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cp\u003e\u003cstrong\u003eHow is it controlled?\u003c\/strong\u003e\u003cbr\u003eWith a wireless remote that operates the vacuum control box, so you can open or close the cutout from the driver's seat.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eDoes it need engine vacuum?\u003c\/strong\u003e\u003cbr\u003eNo. The kit includes its own vacuum pump, so it works the same on boosted, big-cam and low-vacuum engines.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eVacuum or electric: which should I choose?\u003c\/strong\u003e\u003cbr\u003eBoth open and close from the cab. The vacuum kit uses a wireless remote and its own pump; the electric kit uses a motor on the cutout and a one-touch rocker switch. Compare the \u003ca href=\"\/products\/i-30499984-granatellimotor-sportselectronic-exhaust-cutout-kit-307525k-stainless-steel-weld-in-2-50\"\u003eelectric 307525K kit\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eCan I install it myself?\u003c\/strong\u003e\u003cbr\u003eWeld-in kits need welding equipment or a muffler shop. Prefer to clamp it on? The \u003ca href=\"\/products\/granatelli-vacuum-pressure-controlled-309525k\"\u003e309525K\u003c\/a\u003e is a slip-fit version.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat's the warranty?\u003c\/strong\u003e\u003cbr\u003e90 days, with optional 1-, 2- or 3-year extended coverage available at checkout.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWill it add horsepower?\u003c\/strong\u003e\u003cbr\u003eOpening the cutout reduces backpressure. Gains depend on your engine, headers and tune.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eNew to cutouts?\u003c\/strong\u003e Read our \u003ca href=\"\/blogs\/news\/2-5-inch-exhaust-cutout-guide\"\u003e2.5 Inch Exhaust Cutout Guide\u003c\/a\u003e for choosing the right size and type, mounting and state laws.\u003c\/p\u003e\u003chr\u003e\u003ch3 style=\"margin-bottom:10px; color:#666666;\"\u003eWhy Choose Granatelli Motor Sports?\u003c\/h3\u003e\u003cp\u003eGranatelli Motor Sports develops performance components for real-world street, street\/strip, race, and custom applications, with an emphasis on practical performance, dependable construction, and integration into serious automotive builds.\u003c\/p\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":46914313027740,"sku":"309625K","price":307.92,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/F198649476.webp?v=1779220227"},{"product_id":"open-box-2-50-stainless-steel-exhaust-cutout-dual","title":"Open Box – Granatelli 2.5\" Dual Stainless Steel Weld-In Electric Exhaust Cutout","description":"\u003cdiv style=\"font-family: Arial, Helvetica, sans-serif; color: #222; line-height: 1.6; max-width: 1000px; margin: 0 auto;\"\u003e\n\u003cdiv style=\"background:#f5f5f5; border-left:5px solid #c40000; padding:25px; margin-bottom:25px;\"\u003e\n\u003ch2 style=\"color:#c40000; margin-top:0; font-size:28px;\"\u003eOpen Box – 2.50\" Stainless Steel Electronic Exhaust Cutout – Dual Weld-In\u003c\/h2\u003e\n\u003cp style=\"font-size:17px;\"\u003eThis is an \u003cstrong\u003eopen-box Granatelli Motor Sports 2.50\" stainless steel electronic exhaust cutout (dual, weld-in)\u003c\/strong\u003e. Open-box items have had their original packaging opened and are offered at a reduced price while quantities last.\u003c\/p\u003e\n\u003cp style=\"font-size:17px;\"\u003eGranatelli electronic exhaust cutouts let you switch between a quiet, street-friendly exhaust note and an open, aggressive sound at the push of a button.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#222; color:#fff; padding:25px; margin-bottom:30px; text-align:center;\"\u003e\n\u003ch2 style=\"margin-top:0; color:#fff;\"\u003eGranatelli Quality at an Open-Box Price\u003c\/h2\u003e\n\u003cp style=\"font-size:17px; margin-bottom:0; color:#fff;\"\u003eLimited quantities available. Once they are gone, they are gone.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:30px;\"\u003e\n\u003ch2 style=\"color:#c40000; border-bottom:2px solid #c40000; padding-bottom:8px;\"\u003eKey Features\u003c\/h2\u003e\n\u003cdiv style=\"display:flex; flex-wrap:wrap; gap:15px;\"\u003e\n\u003cdiv style=\"flex:1 1 280px; background:#f8f8f8; padding:20px; border:1px solid #ddd;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eOpen-Box Value\u003c\/h3\u003e\n\u003cp\u003eOriginal packaging has been opened. Offered at a reduced price while supplies last.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px; background:#f8f8f8; padding:20px; border:1px solid #ddd;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eStainless Steel\u003c\/h3\u003e\n\u003cp\u003eStainless steel construction for durability and corrosion resistance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px; background:#f8f8f8; padding:20px; border:1px solid #ddd;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003e2.50\" Weld-In\u003c\/h3\u003e\n\u003cp\u003eDesigned for 2.50-inch exhaust systems in a weld-in configuration.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px; background:#f8f8f8; padding:20px; border:1px solid #ddd;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eDual Configuration\u003c\/h3\u003e\n\u003cp\u003eDual setup for both sides of the exhaust.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px; background:#f8f8f8; padding:20px; border:1px solid #ddd;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eElectronic Control\u003c\/h3\u003e\n\u003cp\u003eOpen and close the cutout electronically for on-demand sound.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1 1 280px; background:#f8f8f8; padding:20px; border:1px solid #ddd;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eGranatelli Engineering\u003c\/h3\u003e\n\u003cp\u003eDesigned by Granatelli Motor Sports in Oxnard, California.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:30px;\"\u003e\n\u003ch2 style=\"color:#c40000; border-bottom:2px solid #c40000; padding-bottom:8px;\"\u003eProduct Details\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eCondition: Open box\u003c\/li\u003e\n\u003cli\u003ePipe size: 2.50\"\u003c\/li\u003e\n\u003cli\u003eConfiguration: Dual\u003c\/li\u003e\n\u003cli\u003eInstallation: Weld-In\u003c\/li\u003e\n\u003cli\u003eMaterial: Stainless steel\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#fff4f4; border:1px solid #c40000; padding:15px 20px; margin-bottom:20px;\"\u003e\u003cp style=\"margin:0;\"\u003e\u003cstrong\u003eOpen-Box Note:\u003c\/strong\u003e Questions about the condition or included components of this item? Call 1-805-486-6644 before ordering.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv style=\"background:#f5f5f5; padding:20px; margin-bottom:10px;\"\u003e\n\u003ch3 style=\"margin-top:0;\"\u003eWhy Choose Granatelli Motor Sports?\u003c\/h3\u003e\n\u003cp style=\"margin-bottom:0;\"\u003eGranatelli Motor Sports has built performance parts since 1949. Our components are designed for real-world street, street\/strip, race and show applications, with a focus on dependable construction and practical performance. Questions about fitment? Call us at 1-805-486-6644, Monday–Friday, 8am–5pm PST.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Granatelli Motor Sports","offers":[{"title":"Default Title","offer_id":47288783339676,"sku":"OPEN BOX ITEM","price":226.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/files\/OPENBOX-2.50DUALSSWELDINKIT.png?v=1785436107"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0738\/9826\/2684\/collections\/F198645438.jpg?v=1793045257","url":"https:\/\/granatellimotorsports.com\/collections\/stainless-steel-weld-in-electric-exhaust-cutouts-2-5-63mm.oembed","provider":"Granatelli Motor Sports, Inc.","version":"1.0","type":"link"}