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MR Solid-State Battery Disconnect - Master Kit

MR Solid-State Battery Disconnect - Master Kit

SKU:MR-9901-001-NHRA

Regular price $649.99 USD
Regular price Sale price $649.99 USD
Sale SOLD OUT!

*Modern Racing solid-state units are currently on backorder. Please contact the shop for further details.*

Drop the old mechanical-switch, cheap battery disconnect for solid-state technology. The Modern Racing's Solid-State Battery Disconnect Master Kit is designed specifically for motorsports applications. This weatherproof 6061-billet case is designed to withstand harsh environments at only one-third the weight of a traditional switch.

Unlike the traditional mechanical switch, our system can be triggered in multiple ways, such as a driver’s switch, exterior/track crew switch, and any ground input like a fire-suppression sensor (switches included in the master kit). This ads three layers of safety, all without complicated, unreliable wiring or the need for a long metal push rod in the car. Accepted for competitive use in the NHRA Pro Stock and E3 Spark Plugs Pro Mod series.


    • Weighs 0.5 lbs

    • 300A* rating (1200A surge)

    • Safe for 5V—30V

    • Measurements: 3 7/8in by 2 7/8in, and 1.112in thick (including thread post)



Solid-State Battery Disconnect Master Kit Includes:

    • Modern Racing Solid-State Disconnect

    • Large Push-Style Bumper Switch

    • Driver's Switch

    • Pressure Switch (recommended for first suppression)

    • Built-in Female Plug and Corresponding Male Plug

    • Necessary Ring Terminals


The nearly-indestructible design has gone through g-force and vibration testing to ensure it will withstand the harsh environments of motorsports. It’s lightweight too, at only 0.5 lbs, it’s one-third the weight of a traditional mechanical switch. Finally, an LED indicator light built into the body, allows you to monitor the system and aids in troubleshooting.

PLEASE NOTE: This listing is for the solid-state battery disconnect complete master kit! If you wish to purchase the solid-state battery disconnect only, see the link here.

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