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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Revshift - Corporate Logo
T#:600155
Part#: PTM-BT
In Stock
$ 59.99 USD
Free Shipping
$ 59.99 USD
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95A Track (Green): Significantly stiffer and stronger than OEM rubber. Noticeable increase in NVH. Excellent for enthusiastically driven street and track cars.
Royal Purple - Corporate Logo
T#:361158
Part#: 01512
In Stock
$ 23.99 USD
Free Shipping on orders $49 and up
Royal Purple® Synchromax® is recommended for manual transmissions that specify an automatic transmission fluid or other light-viscosity oil. It is also ideal for transfer cases and 2-cycle motorcycle gearboxes that specify light viscosity lubricants. Synchromax is formulated with Royal Purple’s synthetic, proprietary Synerlec additive technology, offering improved shift quality over a wide temperature range and reduced gear noise. Synchromax is fully compatible with all types of friction materials and offers excellent corrosion and oxidation protection without affecting the soft metals commonly found in manual transmission synchronizers.
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IRP - Individual Racing Parts - Corporate Logo
T#:569029
Part#: IRPSS-3BCS
Ships on Aug 7, 2026
$ 475.99 USD
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$ 475.99 USD
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IRP (Individual Race Parts) is a performance aftermarket parts company that focuses on high quality and long term reliability. The Universal Short Shifter V3 CS was developed to express their belief and compete with the much more expensive CAE Ultra Shifter, but at half the cost. The entire shifter assembly is made from all anodized aluminum and stainless steel for strength, durability, and looks. The V3 CS is a perfect replacement when looking for a shifter that gives you short, crisp, precise shifts with a 60% reduction in travel, plus a new return to center feature.
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IRP - Individual Racing Parts - Corporate Logo
T#:569037
Part#: IRPSS-DB
Ships on Aug 7, 2026
$ 52.99 USD
Free Shipping on orders $49 and up
Developed specifically for the IRP V2, V3, and V3 CS Short shifters, this Dust Boot mounts to the short shifters base to keep out dirt and noise that would normally come through the otherwise unprotected opening in your center console.
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Revshift - Corporate Logo
T#:47885235
Part#: PTM-BT-80A
Back Ordered
$ 59.99 USD
Free Shipping on orders $49 and up
80A Street (Black) Bushings: Stiffer and stronger than OEM rubber. Minimal increase in NVH. Great choice as an upgrade over stock mounts (OEM+).
Driveshaft Carrier Spare Bushing Set - Track
Spare bushings only - does not include new carrier assembly
JXB Performance - Corporate Logo
T#:4799659
Part#: BSH04A1
In Stock
$ 29.99 USD
Free Shipping
$ 29.99 USD
Free Shipping
Refresh all bushings in your driveshaft carrier kit. Please note that the bushings you receive will depend on your specific model of carrier and may not match the picture.

Driveshaft Carrier Spare Bushing Set - Street
Spare bushings only - does not include new carrier assembly
JXB Performance - Corporate Logo
T#:4799658
Part#: BSH04A0
In Stock
$ 29.99 USD
Free Shipping
$ 29.99 USD
Free Shipping
Refresh all bushings in your driveshaft carrier kit. Please note that the bushings you receive will depend on your specific model of carrier and may not match the picture.
Royal Purple - Corporate Logo
T#:369661
Part#: 01300
In Stock
$ 22.99 USD
Free Shipping on orders $49 and up
Max Gear is a high-performance automotive gear oil designed to provide maximum protection to heavily loaded gears while increasing power throughput through the drive train. Max Gear virtually eliminates both gear and bearing wear—even under severe squeeze film conditions caused by extremely high loads, sudden shock loads, or low RPMs. Slippery, synthetic molecules not only reduce wear and friction but significantly increase Max Gear’s cold weather fluidity and lubricity, making it the ideal choice for vehicles operating in cold climates. Gears run smoother, quieter, cooler, and longer without overhauls. It is non-corrosive to both ferrous and nonferrous metals.
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IRP - Individual Racing Parts - Corporate Logo
T#:401279
Part#: IRPSS-3B
Ships on Sep 29, 2026
$ 536.99 USD
Free Shipping
$ 536.99 USD
Free Shipping
The shifter in manual BMWs are said to provide a perfect blend of a sporty and comfortable feel. For some, this is perfect. For others that daily drive or track their BMW, they want shorter shifter travel and a much tighter feel. If you are one of these people, then we have a great option for you, the Short Shifter V3 from IRP, the successor of the V2.
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JXB Performance - Corporate Logo
T#:6061700
Part#: BMW10A0
Ships in 4 Business Days
Starting at $ 299.99 USD
Free Shipping
Starting at $ 299.99 USD
Free Shipping
The stock center support bearing carrier is designed to reduce NVH to the cabin by loosely holding the center bearing with a flimsy rubber bushing. During launches and shifts, the driveshaft is allowed to travel off-center, decreasing throttle response and causing oscillations through the drivetrain. As they age, the carrier rubber sags and dry rots, ruining the driveshaft alignment. Fix or prevent this common issue with JXB Performance's Driveshaft Center Support Bearing Upgrade! JXB utilizes a simple but extremely effective 2-piece design which allows you to install this upgrade and replace bushings with ease. The stock center support carrier is simply cut away, allowing the JXB bushings to "clamp" down on the driveshaft bearing and hold the driveshaft securely in place, maintaining driveshaft alignment at all times. Two bushing options are available for this kit, Street and Track, both of which are many times better than the stock bushings: The street bushings absorb most of the NVH from the drivetrain. Some light NVH is possible at some speeds in the form of a soft hum. (With a modified exhaust or windows down, you’ll probably never hear it) The track bushings are for those who want no-compromise drivetrain performance. These may create a substantial amount of cabin noise. Not sure which is for you? Try them both, they’re interchangeable! Installation does not require the removal of the driveshaft. The 2-part design clamps around the OEM bearing. The old carrier must be removed, so a cutting tool is required. Looking for replacement or additional bushings? See T#4799658 for replacement street bushings and T#4799659 for replacement track bushings.
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IRP - Individual Racing Parts - Corporate Logo
T#:401429
Part#: IRPFD-78-10
Ships on Sep 16, 2026
$ 123.99 USD
Free Shipping
$ 123.99 USD
Free Shipping

Stock rubber flex discs allow for a slight amount of give, especially under heavy acceleration and, depending on the amount of force applied, could potentially tear or split. This slight flex/give can prevent instantaneous transfer of force to the wheels, making accelerations unpredictable, or even lead to your vehicle being stuck on the side of the track. To combat this, IRP's Performance Flex Disc was developed. Made of CNC machined aluminum, this flex disc won't actually flex, and the polyurethane bushings will only provide a enough give to dampen some vibrations and prevent damaging the transmission. This is perfect for high torque applications such a drag cars and dedicated track cars that want immediate response and long term reliability.

78mm Diameter with fitment for M10 nuts/bolts.

Fits the following BMWs:
1977-1983  E21  - 320i 
1983-5/1986  E28  - 528e - Manual Transmission 
5/1986-1988  E28  - 528e - Manual or Automatic Transmission 
1984-1991  E30  - 318i, 318is, & 318ic 
1984-1986  E30  - 325e/es (thru 04/1986) 
1986-1991  E30  - 325i, 325is, 325ic 
1987-1991  E30  - 325ix 
1992-1997  E36  - 318i 318is 318ic - For Automatic Transmission only 
1996-1998  Z3  - Z3 1.9 liter roadster

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IRP - Individual Racing Parts - Corporate Logo
T#:401261
Part#: IRPSS-2B
Special Order: No Guaranteed ETA
$ 420.99 USD
Free Shipping
$ 420.99 USD
Free Shipping
The shifter in manual BMWs are said to provide a perfect blend of a sporty and comfortable feel. For some, this is perfect. For others that daily drive or track their BMW, they want shorter shifter travel and a much tighter feel. If you are one of these people, then we have a great option for you, the Short Shifter V2 from IRP.
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