Professional Safety. Effortless Installation.

When it comes to racing harness installation, precision and safety aren’t negotiable. The VAC Motorsports Harness Anti-Sub Mounting Bracket gives you the safest, cleanest, and easiest way to mount your anti-submarine belts — without drilling into your BMW’s chassis.

Engineered from stainless steel, this bar provides a rock-solid anchor point for both snap-in and bolt-in style five- and six-point harnesses from leading brands such as Schroth, SPARCO, MOMO, OMP, and TAKATA.

Matched perfectly to our VAC Billet Floor Mount Adapters and VAC Race Seat Installation Kits, it’s the professional choice for anyone serious about performance, safety, and factory-quality installation.

Key Features

• No-Drill Design: Securely mounts to VAC Floor Mount Adapters — no cutting, welding, or drilling through your chassis.

• Dual Compatibility: Designed for snap-in and bolt-in anti-sub belts.

• Stainless Steel Construction: Built to endure the punishment of competition use without flexing or corrosion.

• Optimized Geometry: Positions anti-sub belts far back under the seat for ideal belt routing and FIA-style installation.

• Direct Bolt-On Fitment: Fully compatible with VAC Floor Mount Adapters and Race Seat Kits.

• Complete Hardware Kit: Includes all the fasteners you need for a clean, professional install.

• Race-Tested Reliability: Trusted by club racers, HPDE enthusiasts, and pro teams worldwide.

What’s Included

Each kit ships complete with:

• (1) VAC Anti-Sub Mounting Bar (stainless steel)

• (4) M8 x 20 Hex Head Cap Screws

• (4) M8 Flat Small OD Washers

Everything you need — nothing you don’t.

Installation Recommendations

To ensure the safest and most effective setup:

1. Mount as Far Rearward as Possible: We recommend positioning the bar toward the rear of the seat for optimal harness geometry. This may require using our Long Floor Mount Adapter (FMA-L) models.

2. Install Last: Mount your Anti-Sub Bar after mocking up your Floor Mount Adapters, Side Mount Brackets, and Sliders to confirm fitment and clearances.

3. Mock-Up & Tighten:

   • Remove the seat from the vehicle.

   • Orient the Anti-Sub Mounting Bar as shown in our product photos.

   • Typically, the second or third hole from the back of the FMA offers the best starting point.

   • Lubricate hardware, loosely thread bolts into the FMA, and ensure the bar doesn’t interfere with chassis, sliders, or seat rails.

   • Tighten hardware with discretion.

4. Pre-Mount Belts (Optional): If convenient, attach your anti-sub belts to the bar before reinstalling your seat.