SKU: TCI861700
UPC: 788120020268
MPN: 861700
The Tci 861700 SS L-Loc is a universal RollStop line lock built for drag and off-road racing vehicles that need to hold the front brakes locked on command. It installs in-line with the front brake circuit, letting a driver isolate front-wheel braking for controlled burnouts without bleeding pressure to the rear. The heart of the kit is a waterproof billet aluminum solenoid valve rated to 3,000 psi of brake pressure, paired with a dash-mount switch. For racers building out a launch setup, this sits in the same family of launch control hardware we stock for the strip.
The solenoid body is machined from 6061 T-6 aluminum and sealed for water resistance, so it survives the spray and grime of off-road and staging-lane use. It runs on a 12-volt feed and pulls only 1 amp, which keeps wiring simple and forgiving on the supplied inline fuse connector. Inlet and outlet ports use 1/8-inch female threads, standard pipe taper, making it straightforward to plumb into most front brake lines. The complete kit ships with the solenoid valve, activation switch, mounting bracket, inline fuse connector, and the mounting hardware needed to set it up. Package dimensions run roughly 9.00 by 5.80 by 1.60 inches, and the assembly weighs under a pound. Fitment is universal, so it adapts across a wide range of chassis.
A line lock earns its keep at the starting line: hold the dash switch, hit the throttle, spin the front tires to heat the rears, then release to launch with grippy rubber. Because this is a racing component intended for off-road and competition use, it is not a street brake control. Pair it with a quality master cylinder and a tuned brake circuit for consistent pressure, and browse our full brake components selection alongside proportioning valves to dial in your front-to-rear balance. We can answer fitment questions before you order.
A line lock holds hydraulic pressure to the front brakes when you press a switch, keeping the front tires locked while the rears spin freely. The Tci 861700 solenoid mounts in-line with the front brake circuit. You hold the switch during a burnout to heat the rear tires, then release to launch.
The waterproof billet aluminum solenoid valve is rated to 3,000 psi of brake pressure. It draws only 1 amp on a 12-volt feed, so the supplied inline fuse connector and switch handle the load without heavy wiring.
No. The 861700 RollStop is intended for off-road racing applications only and is not designed for street use. Keep it on the strip or closed-course staging lanes where front-brake lockup is part of a controlled burnout routine.
The inlet and outlet both use 1/8-inch female pipe threads with standard pipe taper, which plumbs into most front brake lines with common fittings. The kit includes the solenoid, switch, mounting bracket, inline fuse connector, and mounting hardware.
The solenoid body is machined from 6061 T-6 aluminum with a natural aluminum finish and a waterproof seal, so it holds up to spray and grime in off-road and staging-lane conditions. The complete assembly weighs under a pound.
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