B&M Brake Hydraulic Line Lock Kit

B&M Launch Control: Race-Proven Brake Hydraulic Line Lock Kits

B&M Racing & Performance has been a cornerstone of the drag racing world since 1953, and that deep-rooted motorsports DNA carries directly into their Brake Hydraulic Line Lock Kits. While B&M built its legendary reputation on transmissions, shifters, and torque converters, their line lock kits represent the same philosophy: give racers precisely engineered tools that perform flawlessly when it matters most.

What Is a Brake Hydraulic Line Lock — and Why Does It Matter?

A line lock is a specialized solenoid-controlled valve that allows the front brakes to lock independently of the rear brakes via an electrical switch. When activated, it closes off the brake circuit at the non-driven wheels, holding the vehicle stationary while the drive wheels spin freely. This is the foundation of a proper drag racing burnout — warming the tires to their ideal operating temperature for maximum traction at launch — without destroying your rear brake pads or rotors in the process.

Beyond the burnout box, a line lock also functions as a practical hill-holder on street-driven vehicles, keeping the car stationary on inclines without requiring constant brake pedal pressure.

B&M’s Line Lock Kit: Features & Technology

B&M’s Brake Hydraulic Line Lock Kit (part #46076) is a fully universal system designed to integrate with virtually any hydraulic brake setup. It ships as a complete, ready-to-install package so you can spend less time sourcing parts and more time at the track. Key features include:

• Complete kit contents: Includes a brake launch control solenoid, button switch, aluminum switch mount, fuse holder, and indicator light — everything needed for a clean, functional installation.
• Universal front or rear compatibility: The system can be used to lock either the front or rear brakes, making it equally effective for rear-wheel-drive and front-wheel-drive applications.
• High-pressure rating: The solenoid handles constant brake fluid pressure up to 400 psi and can withstand pressure spikes up to 1,500 psi — well within the demands of aggressive race launches.
• Broad electrical compatibility: Works with both 12-volt and 16-volt electrical systems, covering the vast majority of performance street and race vehicles.
• Steel construction with 1/8" NPT ports: Zinc-plated steel body with standard 1/8” NPT inlet and outlet ports for durability and straightforward plumbing.
• Manual and automatic transmission friendly: Suitable for use with either transmission type, so your launch control setup doesn’t depend on what’s behind your engine.

Street Use & Safety

While the B&M line lock is primarily engineered for drag racing, it can serve as a hill-holding device on the street for up to 60 seconds. It’s important to note that hydraulic systems naturally bleed down pressure over time, so this device should never be used as a long-term parking brake. Always follow local regulations regarding line lock use on public roads.

Why Trust B&M for Launch Control?

With over 70 years of motorsports heritage, B&M has consistently delivered products that racers rely on to break records. Their line lock kit reflects the same commitment to dependability and performance found across their entire catalog — from legendary ratchet shifters to performance torque converters. If you’re serious about getting the most out of every pass down the strip, B&M’s launch control system is a trusted, time-proven choice.