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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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Powerflex Transfer Case Bushing Insert - Black Series

T#:53997732

Part#: PFF5-1428BLK

Ships in 2 Business Days

$ 50.99 USD

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$ 50.99 USD

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Lock down your xDrive drivetrain for the track. This 95A durometer Black Series polyurethane insert eliminates transfer case rotation, ensuring zero-compromise power delivery and immediate throttle response under maximum load.

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Billet Diff Lock Down Kit

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

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Sale - Save 7%

$ 313.99

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

Starting at $ 291.99 USD

Add to Wish List

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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Powerflex Transfer Case Bushing Insert - Performance Series

T#:53997744

Part#: PFF5-1526P

Ships in 2 Business Days

$ 41.99 USD

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$ 41.99 USD

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Eliminate xDrive drivetrain twist. This 80A durometer polyurethane insert slides into the factory transfer case mount, locking down deflection for immediate throttle response and track-ready durability.

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Powerflex Transfer Case Bushing Insert - E83/E84 X1/X3 XDrive ...

T#:53997743

Part#: PFF5-1526

Ships in 2 Business Days

$ 41.99 USD

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$ 41.99 USD

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Lock down your xDrive transfer case. This polyurethane mount insert slips into the factory rubber voids to eliminate drivetrain deflection, optimizing power delivery and stabilizing the driveline under hard load.

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Powerflex Transfer Case Bushing Insert - Diesel

T#:53997745

Part#: PFF5-1526R

Ships in 2 Business Days

$ 41.99 USD

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$ 41.99 USD

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Stabilize your xDrive drivetrain with Powerflex. This 65A durometer polyurethane insert slides into your factory transfer case mount, eliminating high-torque deflection and optimizing power transfer under heavy loads.

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PowerFlex Rear Diff Front Mount Bushing - E36 - M4, M44, M50, M52, S5...

T#:54281644

Part#: PFR5-325H

Back Ordered

$ 44.99 USD

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$ 44.99 USD

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The Powerflex Heritage Series is a premium motorsport upgrade engineered to eliminate critical differential deflection. Molded from an advanced, proprietary polyurethane formula, this bushing stabilizes the differential nose under high-torque loading.

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BMW E21 Rear Diff Mounting Bushing

T#:54352781

Part#: PFR5-1625H

Ships in 2 Business Days

$ 89.99 USD

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$ 89.99 USD

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BMW 1502-2002 (1962 - 1977) Rear Diff Rear Mounting Bushing

T#:54352762

Part#: PFR5-2025H

Ships in 2 Business Days

$ 89.99 USD

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$ 89.99 USD

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By stabilizing the differential's position relative to the subframe, the rear diff bushing helps maintain static axle angles under extreme loads, reducing wear on peripheral drivetrain components and providing a highly predictable, repeatable platform for track setups.

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Transmission Mount - Automatic - Rear Right

T#:54852047

Part#: 300 221 1159

Ships on Oct 30, 2026

$ 43.99 USD

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$ 43.99 USD

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Replace your worn factory mount with this high-quality OE-equivalent unit from Meyle.

Engine Mount

T#:57014203

Part#: 11811132321

Special Order: No Guaranteed ETA

$ 11.99 USD

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$ 11.99 USD

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Meyle delivers a solid, precision-engineered solution to secure your engine firmly in place without sacrificing everyday drivability.

Transmission Mount

T#:54852034

Part#: 300 118 1131

Special Order: No Guaranteed ETA

$ 132.99 USD

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$ 132.99 USD

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This replacement mount from Meyle is engineered to eliminate that unwanted play and restore structural integrity to your BMW's drivetrain layout.

Transmission Mount

T#:55569539

Part#: 22116885778

Special Order: No Guaranteed ETA

$ 35.99 USD

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$ 35.99 USD

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PowerFlex Rear Diff Rear Mounting Bushing - E10

T#:54352763

Part#: PFR5-2025BLK

Back Ordered

$ 102.99 USD

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$ 102.99 USD

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The Powerflex Black Series is engineered for maximum performance and minimum deflection

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