BMW Drivetrain Parts for BMW E21 320i M10 1.8L

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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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Powerflex BMW E21 Rear Axle Carrier Mount Bushing Black Series
Powerflex BMW E21 Rear Axle Carrier Mount Bushing Black Series ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Powerflex Black Series - Corporate Logo
T#:34214752
Part#: PFR5-1620BLK
Ships in 1 Business Day
$ 115.99 USD
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$ 115.99 USD
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The Powerflex BMW E21 Rear Axle Carrier Mount Bushing (Black Series) is a specialized component designed for high-performance applications, particularly suited to motorsport or track use. It replaces the standard rubber bushing in the rear axle carrier, providing enhanced durability and precision.

Key Characteristics:

  • High-Performance Polyurethane: Constructed from an extra-stiff polyurethane blend, the Black Series bushings are 25% stiffer than Powerflex's standard bushings, offering superior rigidity and control.
  • Race-Focused: Designed for maximum performance, these bushings reduce unwanted movement in the rear axle, improving suspension geometry and alignment under load. This leads to sharper handling and better grip in aggressive driving scenarios.
  • Durability: Unlike OEM rubber bushings, these polyurethane versions resist wear, deformation, and degradation from heat and fluid exposure, making them ideal for extreme conditions.
  • Precision Fit: Engineered to fit BMW E21 models, they provide a direct replacement, offering ease of installation and compatibility without the need for modifications.

This bushing is part of Powerflex’s most performance-oriented range and is ideal for drivers seeking to maximize the performance potential of their BMW E21 on the track or during spirited driving. Comfort is secondary to improved handling and precision with this upgrade.

 
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Powerflex BMW E21 Rear Diff Mounting Bushing
Powerflex BMW E21 Rear Diff Mounting Bushing
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Powerflex Black Series - Corporate Logo
T#:34382163
Part#: PFR5-1625BLK
Ships in 1 Business Day
$ 97.99 USD
Free Shipping on orders $49 and up
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$ 97.99 USD
Free Shipping on orders $49 and up
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The Powerflex Rear Diff Mount Bushing for the BMW E21 offers a robust solution to support and stabilize the differential, replacing the standard rubber bushings with durable polyurethane. This upgrade minimizes unwanted differential movement, enhancing driving dynamics and responsiveness.

Key Benefits:

  1. Enhanced Stability: By minimizing differential movement, Powerflex bushings ensure consistent alignment, giving better rear-end stability.
  2. Improved Longevity: Unlike rubber, polyurethane is resistant to aging and degradation from elements like oil and road debris.
  3. Responsive Handling: With reduced play in the differential mount, power transfer becomes more direct, allowing for sharper throttle response.
  4. Vibration Dampening Options: Powerflex offers options like the Black Series for motorsport applications and the standard Purple for everyday performance with minimal increase in vibration.

These bushings are popular among E21 owners who want a durable, performance-oriented solution that balances comfort and handling precision. Ideal for both spirited driving and daily use.

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Sachs Performance Racing Metallic Clutch Disc - E10 E21 E30 E36 Z3
Sachs Performance Racing Metallic Clutch Disc - E10 E21 E30 E36 Z3 ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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SACHS Performance - Corporate Logo
T#:393843
Part#: 881864999758
Ships in 5 Business Days
$ 448.99 USD
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$ 448.99 USD
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Looking to upgrade your clutch disc? This Sachs Performance clutch disc is a great option. Allowing for higher torque and horsepower, this disc is perfect for aggressive track applications such as endurance racing, clubsport, autocross, hill climbing and 1/4 mile racing.

Sachs Performance is the racing and performance oriented selection of high quality parts from Sachs and ZF Engineering. Supplying countless brands with OE parts and offering one of the widest selection of OEM replacement parts, they are known for their exceptionally high quality products. You can purchase these performance parts with confidence, knowing they will resist heavy wear and tear for much longer than most other aftermarket options.

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