This dependable, quality unit provides first-class performance as a braking device. When installed in-line with the vehicle's front brakes, the TCI® Roll Stop® allows you to do a burnout like the professionals. Simply pump up the brake, apply the RollStop® and release the brake pedal. The Roll Stop® keeps the front brakes applied. If you did not pump up enough brake pressure - no problem - just hit the brake pedal and the unique one-way valve puts additional pressure through to the wheel cylinder side. The TCI® RollStop® is waterproof and manufactured from 6061-T6 aluminum. The precision solenoid valve can withstand 3, 000 psi of pressure and is designed to draw only one amp of current. a removable mesh screen allows for easy cleaning. The 861700 RollStop® kit comes complete with solenoid, our 387600 microswitch, red powder coated switch mounting bracket, in-line fuse connector and mounting hardware.Pit Stop USA offers TCI Rollstop Line Lock - Complete Kit 861700 at low everyday prices. Be sure to check out all of our products from TCI Automotive including TCI Automotive Brake Shut-Off Valves and TCI Automotive Roll Controls / Line Locks.