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BMW Drivetrain Parts

Building your perfect BMW is more than just adding horsepower and stiff suspension. Your drivetrain needs attention in order to deliver power effectively. Most BMWs feature comfortable clutch discs, heavy flywheels, long shifter throws, and open differentials. The drivetrain transmits power to the wheels, but can also be a source of power loss when it is designed for comfort rather than performance. Everything on this page will help you improve your power delivery and driving experience by providing custom Limited Slip Differentials, Short Shift Conversions, Performance Clutch Discs, Lightweight Flywheels, and anything else your BMW needs to be the perfect driving experience.

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BMS Differential Support Bracket Brace For G Chassis BMW/Supra
BMS Differential Support Bracket Brace For G Chassis BMW/Supra ...
Burger Motorsports - Corporate Logo
T#:49822560
Part#: BMSDSBBG
Ships on Aug 31, 2026
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$ 229.00 USD
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$ 229.00 USD
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For G-Chassis BMW & A90/A91 Toyota Supra High torque loads, hard launches, and aggressive driving expose the factory differential mounting’s built-in compliance. Under power, the differential can shift excessively, resulting in wheel hop, inconsistent traction, and increased stress on drivetrain components—issues that become more pronounced on tuned or track-driven cars. The BMS Differential Support Bracket Brace corrects this weakness by reinforcing the differential mounting point and securely tying it to the subframe. By controlling unwanted movement, the brace improves rear-end stability and ensures power is transferred to the ground more efficiently. Why Upgrade? OEM differential mounts favor NVH reduction over control. As torque output increases, that compliance translates into drivetrain shock and lost traction. This brace stiffens the system where it matters most, reducing flex and improving load management under acceleration. Performance Benefits Improved launch consistency Significant reduction in wheel hop Increased rear-end stability under load More precise and predictable power delivery Engineered for Demanding Use Designed around factory mounting points, the BMS Differential Support Bracket delivers precise OE-level fitment with increased structural rigidity. Its robust construction resists deflection under high torque, while upgraded hardware provides greater clamping force for long-term reliability. Fully bolt-on for straightforward installation on both stock and modified vehicles. Key Features Reinforces rear differential mounting Limits differential movement under load Enhances traction and drivetrain response Heavy-duty construction for high-performance applications Bolt-on installation using factory locations Compatible with G-chassis BMW and A90/A91 Supra A focused drivetrain upgrade for drivers who demand consistency, control, and durability at higher performance levels.
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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 2 Business Days
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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Powerflex Transfer Case Bushing Insert - Performance Series
Powerflex Transfer Case Bushing Insert - Performance Series
Powerflex - Corporate Logo
T#:53997744
Part#: PFF5-1526P
Ships in 2 Business Days
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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OS Giken Throw Out Bearing Only For OS Giken Clutch Kit
OS Giken Throw Out Bearing Only For OS Giken Clutch Kit
OS Giken - Corporate Logo
T#:54388400
Part#: MN023-AJ60K
Ships in 5 Business Days
New Item
$ 150.00 USD
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$ 150.00 USD
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Throw out bearing for OS Giken clutches
Powerflex Transmission Mount Bushing - Heritage Series
Powerflex Transmission Mount Bushing - Heritage Series
Powerflex - Corporate Logo
T#:54388391
Part#: PFF5-4655H
Back Ordered
New Item
$ 118.99 USD
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$ 118.99 USD
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Stabilize your gearbox under heavy cornering loads. These 70A durometer Heritage mounts increase rigidity by 150% to prevent shift-linkage binding, utilizing a discrete dark grey finish to blend into your undercarriage.
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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 2 Business Days
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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Ultra-Oval Shifter Arm Front Bushing Ultra-Oval - Black
Ultra-Oval Shifter Arm Front Bushing Ultra-Oval - Black
Powerflex - Corporate Logo
T#:54352784
Part#: PFF5-4634
Ships in 2 Business Days
New Item
$ 53.99 USD
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$ 53.99 USD
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Secure your shift gate alignment under high track loads. This 95A durometer polyurethane bushing replaces the flimsy factory oval rubber, eliminating shifter arm flex for fast, positive gear engagement.
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Performance Polyurethane Rear Differential Bushings
Performance Polyurethane Rear Differential Bushings
Powerflex - Corporate Logo
T#:54317180
Part#: PFR5-324
Back Ordered
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$ 51.99 USD
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$ 51.99 USD
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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
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$ 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 2 Business Days
New Item
$ 89.99 USD
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$ 89.99 USD
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PowerFlex Rear Diff Rear Mount Bushing - E36 - M42, M44, M50, M52, S50, S52
PowerFlex Rear Diff Rear Mount Bushing - E36 - M42, M44, M50, M52, S5...
Powerflex - Corporate Logo
T#:54281641
Part#: PFR5-326H
Ships in 2 Business Days
New Item
$ 139.99 USD
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$ 139.99 USD
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The Powerflex Heritage Collection replaces the soft factory unit with an engineered, high-performance polyurethane compound. It is designed to constrain differential rotation and stabilize the driveline without changing the classic aesthetic of the vehicle undercarriage.
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PowerFlex Rear Diff Front Mount Bushing - E36 M3 Evo - S50B32
PowerFlex Rear Diff Front Mount Bushing - E36 M3 Evo - S50B32 ...
Powerflex - Corporate Logo
T#:54317182
Part#: PFR5-324H
Ships in 2 Business Days
New Item
$ 51.99 USD
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$ 51.99 USD
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Ensure your build operates at peak mechanical efficiency. Eliminate driveline slop and secure your differential assembly with track-proven engineering.
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 2 Business Days
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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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 2 Business Days
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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OS Giken Clutch Kit - STR Series - R52, R53
OS Giken Clutch Kit - STR Series - R52, R53
OS Giken - Corporate Logo
T#:54388380
Part#: MN021-BJ5
Ships in 2 Business Days
New Item
$ 1,920.00 USD
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$ 1,920.00 USD
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Upgrade your drivetrain and experience the perfect balance of track performance and street drivability.
Rogue Engineering E46 M3 Differential Bushing (Front Position) FIX
Rogue Engineering E46 M3 Differential Bushing (Front Position) FIX ...
Rogue Engineering - Corporate Logo
T#:54388516
Part#: RE.484.FIX
Ships in 8 Business Days
New Item
$ 64.00 USD
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$ 64.00 USD
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A common failure point on the BMW E46 M3 platform occurs when the side differential mounting bolt backs out, leading to stripped threads in the differential cover.
Powerflex Transmission Mount Bushing - Black Series
Powerflex Transmission Mount Bushing - Black Series
Powerflex - Corporate Logo
T#:54388342
Part#: PFF5-4655BLK
Back Ordered
New Item
$ 118.99 USD
Free Shipping on orders $49 and up
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$ 118.99 USD
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Secure your gearbox geometry at the absolute limit. These 95A durometer Black Series mounts increase stiffness by 375%, preventing transmission twisting to ensure flawless shifting and maximum torque translation.
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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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