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Drivetrain Mounts and Upgrades

From the factory, engine and transmission mounts are rubber and thus a wear component. Worn out engine or transmission mounts create sloppiness and a disconnect between the driver and your BMW's powerplant. If your vehicle is purpose built for the track, we recommend solid engine and transmission mounts. These have zero deflection, but come at the expense of added NVH (noise, vibration, and harshness). Poly engine and transmission mounts offer a good balance between OEM rubber and solid mounts for those with mixed purpose vehicles, offering great performance and connection with little sacrifice in terms of NVH.
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Enthusiast Bundles - Corporate Logo
T#:37284813
Part#: 047282LAEBKT
In Stock
Sale - Save 26% $ 536.98

This product was last offered at the strikethrough price on
05-05-2026

$ 399.00 USD
Free Shipping on orders $49 and up
Sale - Save 26%
$ 536.98

This product was last offered at the strikethrough price on
05-05-2026

$ 399.00 USD
Free Shipping on orders $49 and up

Turner Motorsport Differential Brace for F-Chassis N55/B58

Unleash the full potential of your N55/B58 engine with the Turner Motorsport Differential Brace, crafted to deliver stability and minimize deflection. Designed to withstand high-performance demands, this brace minimizes unwanted differential movement and provides a more immediate, responsive power transfer to the wheels, even at extreme torque levels.

Key Benefits:

Enhanced Driving Stability: Improved traction, reduced wheel hop, and an overall tighter rear-end feel. Durability: Reduces stress on factory rubber bushings, extending their life and protecting the differential bearing. Precision Fitment: Constructed from 6061-T6 aluminum with a Turner Blue anodized finish, engineered using FARO laser scanning and CAD technology. High-Grade Hardware: Equipped with corrosion-resistant Yellow Zinc-Chromate coated 10.9 fasteners, this brace is built for lasting strength. Installation Note:

Installation requires precision drilling (10mm and 15mm carbide bits) for a secure fit.

95A Polyurethane Differential Bushings

These high-performance polyurethane differential bushings from ECS Tuning deliver durability and an optimal balance of comfort and control. Designed to reduce differential deflection and improve throttle response, the 95A durometer polyurethane bushings bring track-level stability to your daily drive, without the noise or harshness of solid mounts.

Sturdy & Resistant: Made from tough 95A durometer polyurethane with anodized 6061-T6 aluminum sleeves, they resist chemicals, salt, and wear. Enhanced Handling & Control: Reduce wheel hop and improve throttle response, giving you better control in high-stress scenarios, from spirited driving to daily commuting. Engineered for Strength: Designed to handle extreme driveline forces, ECS Tuning’s bushings optimize power transfer while maintaining smooth performance. What's Included:

Turner Blue Anodized Rear Differential Brace Precision drill guides and complete hardware Polyurethane Differential Bushings for a superior driving experience

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Vargas Turbo Technologies - Corporate Logo
T#:21176906
Part#: VTT-A9X-DLD
In Stock
Sale - Save 7% $ 313.99

This product was last offered at the strikethrough price on
05-04-2026

Starting at $ 291.99 USD
Free Shipping on orders $49 and up
Sale - Save 7%
$ 313.99

This product was last offered at the strikethrough price on
05-04-2026

Starting at $ 291.99 USD
Free Shipping on orders $49 and up
VTT noticed a hole in the A9X/Z4 market for a high-quality, lightweight, NVH-friendly, and easy-to-install Diff Lock Down kit to improve diff stability under launching, and hard cornering. Vargas went to work on a very innovative design that 100% positively locks the diff down from movement, while shielding it from adding a ton of NVH, and can be used with the stock diff, and subframe bushings. This design uses existing mounting points on the vehicle, you do NOT have to remove the subframe or the Diff to install. Simply remove 4 diff bolts, drill two holes in the subframe slightly bigger, install two M10 riv-nuts, and install the lockdown, you do not even have to move the exhaust. A typical install can be 15-30 minutes for someone who is experienced. You will need a Riv-nut tool to install the Riv-nuts as one is not included. Features: Lightweight 1.5 lbs for the entire lockdown plate Uses FOUR connection points on the Diff, and two on the subframe for the ultimate in positive diff location, this will stop all diff movement on launch, saving your guibos, etc 100% Billet construction from 6061-T6 aluminum Anodized in 4 colors for corrosion resistance, a long-lasting finish, and good looks The subframe does NOT have to be removed for installation Uses all 12.9 grade hardware Does not add excessive NVH Positively locks down the diff to eliminate all unwanted movement under launches, acceleration, cornering, etc.
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