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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
Powerflex Transfer Case Bushing Insert - Black Series
Powerflex - Corporate Logo
T#:53997732
Part#: PFF5-1428BLK
Ships in 1 Business Day
New Item
$ 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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Complete Performance Polyurethane Differential And Subframe Bushing Set - E8x, E9x
Complete Performance Polyurethane Differential And Subframe Bushing S...
Packaged by Turner - Corporate Logo
T#:56038061
Part#: E9XSBFRDFFBKT2
In Stock
New Item
$ 491.99 USD
Free Shipping on orders $49 and up
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$ 491.99 USD
Free Shipping on orders $49 and up
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This complete upgrade package is designed to put an end to steering slop. Utilizing a high performance 95A durometer polyurethane formulation, this kit replaces the mushy OEM rubber with proven rigidity.
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Powerflex Transfer Case Bushing Insert - Performance Series
Powerflex Transfer Case Bushing Insert - Performance Series
Powerflex - Corporate Logo
T#:53997744
Part#: PFF5-1526P
Ships in 1 Business Day
New Item
$ 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
Powerflex Transfer Case Bushing Insert - E83/E84 X1/X3 XDrive ...
Powerflex - Corporate Logo
T#:53997743
Part#: PFF5-1526
Ships in 1 Business Day
New Item
$ 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
Powerflex Transfer Case Bushing Insert - Diesel
Powerflex - Corporate Logo
T#:53997745
Part#: PFF5-1526R
Ships in 1 Business Day
New Item
$ 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, S50
PowerFlex Rear Diff Front Mount Bushing - E36 - M4, M44, M50, M52, S5...
Powerflex - Corporate Logo
T#:54281644
Part#: PFR5-325H
Back Ordered
New Item
$ 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
BMW E21 Rear Diff Mounting Bushing
Powerflex - Corporate Logo
T#:54352781
Part#: PFR5-1625H
Ships in 1 Business Day
New Item
$ 89.99 USD
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$ 89.99 USD
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BMW 1502-2002 (1962 - 1977) Rear Diff Rear Mounting Bushing
BMW 1502-2002 (1962 - 1977) Rear Diff Rear Mounting Bushing
Powerflex - Corporate Logo
T#:54352762
Part#: PFR5-2025H
Ships in 1 Business Day
New Item
$ 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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M12x1.5 Hex Hardware Kit
M12x1.5 Hex Hardware Kit
Genuine BMW - Corporate Logo
T#:55317678
Part#: 331M12X15KT
Ships in 1 day
New Item
$ 59.79

This product was last offered at the strikethrough price on
07-08-2026

$ 53.16 USD
Free Shipping on orders $49 and up
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$ 53.16 USD
Free Shipping on orders $49 and up
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This factory Genuine BMW Hardware Kit is put together for enthusiasts who demand zero compromises when working on their vehicle.
Engine Mount And Poly Inserts - Street - Ultimate Fix
Engine Mount And Poly Inserts - Street - Ultimate Fix
Packaged by Turner - Corporate Logo
T#:56291056
Part#: 22118743621KT2
Back Ordered
New Item
$ 137.99 USD
Free Shipping on orders $49 and up
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$ 137.99 USD
Free Shipping on orders $49 and up
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Built around a fresh URO OE-spec Engine Mount and reinforced with a Powerflex Street Polyurethane Insert, this kit locks down excessive engine play. Factory rubber mounts prioritize complete isolation at the expense of driver feedback.
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PowerFlex Rear Diff Rear Mounting Bushing - E10
PowerFlex Rear Diff Rear Mounting Bushing - E10
Powerflex - Corporate Logo
T#:54352763
Part#: PFR5-2025BLK
Back Ordered
New Item
$ 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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