A line lock kit holds your front brakes on while the rear tires spin free, so you can do a controlled burnout and heat the tires before you stage. Granatelli Motor Sports Tire Fryer electric line lock kits come as a universal 4-port kit (760500) and as kits built for the 2010-2015 Chevrolet Camaro (760512) and the Ford Mustang GT, Shelby GT500 and V6 (760515). Each kit includes the solenoid valve, activation switch and installation hardware. We also sell the 2-port solenoid valve on its own (760300) and replacement switches (760508 and 760506). The valves run on 12 to 24 volts, and the 760300 is rebuildable.
Line Lock Button: Hold It and It's On, Let Go and It's Off
Every Granatelli Motor Sports line lock kit comes with a push button. Hold the line lock button and the front brakes stay locked; release it and they let go. There is no toggle to forget in the on position, which is exactly what you want when you roll out of the burnout box and into the beams. If your button wears out or you want a new one, the 760508 momentary push-button line lock switch and the 760506 replacement activation switch keep your kit working without replacing the valve.
How to Use a Line Lock
- Press the brake pedal firmly.
- Press and hold the line lock button.
- Release the brake pedal. The fronts stay locked while you keep holding the button.
- Bring up the rpm and heat the rear tires.
- Let go of the button and the front brakes release.
An electric line lock is a hydraulic brake lock: a solenoid valve in the front brake line traps pressure only while the button is held. That is different from a manual or mechanical line lock that you lever on and off, and it is why the push button gives you instant, positive release.
Line Lock FAQ
What does a line lock do?
It traps brake pressure in the front circuit. Press the pedal, hit the switch, release the pedal, and the fronts stay locked while the rears spin. Release the switch and the fronts let go so you can pull into the beams.
Does the kit come with a line lock button?
Yes. All Granatelli line lock kits come with a push button. Hold it and the line lock is on; release it and it is off. The 760300 is the exception because it is the valve only.
Do I need a 2-port or 4-port line lock?
It depends on how your front brakes are plumbed. Most modern cars have a split front circuit and need a 4-port valve, which is what the 760500, 760512 and 760515 kits use. The 2-port 760300 goes inline on a single line.
Universal or vehicle-specific?
If we make a kit for your car, buy that one. It is designed around where your brake lines already run, so there is less custom plumbing. The universal 760500 fits anything, but you make the lines and choose the mounting spot.
Is the 760300 a complete kit?
No. The 760300 is the solenoid valve only, with no switch or fittings. It is for people building their own brake-control setup. The 760500, 760512 and 760515 are complete kits.
Can I use a line lock kit as a parking brake?
No. A line lock traps hydraulic pressure, and trapped pressure bleeds off over time. Use it for burnouts on a prepared surface, then release it. Track and state rules on modified brake systems vary, so check before you install one.
Will a line lock work with my brakes?
Yes. A line lock works on any brake system, including manual brakes.
New to line locks? Read our guide: What a line lock does and how to pick one. Looking for fluid recovery bottles and the rest of the brake parts? Shop Braking System & Line Locks.
