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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MOTUL 75W-90 GEAR 300 Synthetic Gear and Differential Fluid
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motul - Corporate Logo
T#:2451
Part#: MOGR300-75W90
In Stock
10% off MSRP $ 37.85

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 34.06 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 37.85

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 34.06 USD
Free Shipping on orders $49 and up
This MOTUL SAE 75W90 gearbox and differential fluid is a 100% synthetic ester based oil, which can be used in tranmissions and rear differentials under all conditions of use -- street, track and racing. This oil has proved its qualities and resistance to extreme conditions. We would not hesitate to use this MOTUL 75W-90 GEAR 300 gear oil on our own personal vehicles, and neither should you. Be sure to check your owners manual before selecting oil products for street applications. This is a 1 liter bottle, so be sure to order enough for your specific application. API GL-5.MIL-L-2105D.
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IRP Universal Short Shifter V3 CS (Centering Spring) - Black Reverse ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
IRP - Individual Racing Parts - Corporate Logo
T#:569029
Part#: IRPSS-3BCS
In Stock
$ 475.99 USD
Free Shipping
$ 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 BMW Short Shifter Dust Boot - For IRP V2, V3 & V3 CS Short Shifte...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
IRP - Individual Racing Parts - Corporate Logo
T#:569037
Part#: IRPSS-DB
Ships in 3 Business Days
$ 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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300V 5w40 "Competition" - 2 Liters
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motul - Corporate Logo
T#:13957881
Part#: 110817
In Stock
10% off MSRP $ 60.83

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.74 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 60.83

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.74 USD
Free Shipping on orders $49 and up
Use for Endurance/Rally/ GT/ Historic racing 100% synthetic racing motor oil based on ESTER Core® technology. Through technical partnerships with most prestigious Teams of car racing, MOTUL has developed a wide range of lubricants for Racing and Sport cars. The 300V motorsport line improves performance of the latest generation engines along with high protection against wear, oil pressure drop and oxidation due to high temperature. Power & engine protection. Medium to high engine dilution. Color: Visual Orange Viscosity grade SAE J 300 5W-40 Density at 20°C (68°F) ASTM D1298 0.850 Viscosity at 40°C (104°F) ASTM D445 78.7 mm²/s Viscosity at 100°C (212°F) ASTM D445 13.5 mm²/s HTHS viscosity at 150°C (302°F) ASTM D4741 4.0 mPa.s Viscosity Index ASTM D2270 176.0 Pour point ASTM D97 -48.0 °C / -54.0 °F Flash point ASTM D92 234.0 °C / 453.0 °F
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MOTUL 300V 10W-40 Chrono Race Oil - 2 liter can
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motul - Corporate Logo
T#:2448
Part#: MO300V-10W40-2L
Ships on Jul 27, 2026
28% off MSRP $ 60.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 43.99 USD
Free Shipping on orders $49 and up
28% off MSRP
$ 60.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 43.99 USD
Free Shipping on orders $49 and up
10W40 MOTUL 300V series "CHRONO" competition racing oil is a true racing lubricant for true race cars. Designed for high temperatures, high shear, and the rigors of professional and endurance racing. MOTUL has developed Double Ester Technology for new 300V series, superior to complex ester which was previously recognized as the best base oil (up to now!). Double Ester Technology, made by carefully balancing the ratio of complex ester and the newly developed macromolecular high polymer ester, enable base oil more wide-ranged, and delivers high output performance and superior reliability.
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IRP Universal Short shifter V3 - Black Reverse Button
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
IRP - Individual Racing Parts - Corporate Logo
T#:401279
Part#: IRPSS-3B
Ships on Sep 15, 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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IRP V2 Short shifter - BMW 5 & 6 Speed
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
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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IRP Performance Aluminum & Polyurethane Flex Disc - E21 E28 E30 E36 Z...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
IRP - Individual Racing Parts - Corporate Logo
T#:401429
Part#: IRPFD-78-10
Special Order: No Guaranteed ETA
$ 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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Motylgear Manual Transmission / Differential Fluid 75w90 - 1 Liter ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motul - Corporate Logo
T#:340559
Part#: 317011
Back Ordered
10% off MSRP $ 20.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 18.40 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 20.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 18.40 USD
Free Shipping on orders $49 and up
Flushing and replacing your manual transmission and differential fluid is one way to ensure that components wear properly to avoid costly problems down the road. Your owner's manual will specify intervals for flushing and refill.
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300V 15w50 "Competition" - 2 Liters
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motul - Corporate Logo
T#:11660857
Part#: 110860
Special Order: No Guaranteed ETA
10% off MSRP $ 60.83

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.74 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 60.83

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 54.74 USD
Free Shipping on orders $49 and up
Motul Motyl Gear SAE 75W80 Gear Oil - 1 Liter Bottle (1.05 Quart) ...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Motul - Corporate Logo
T#:2249
Part#: MOTY-75W80-1L
Ships on Aug 6, 2026
10% off MSRP $ 20.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 18.40 USD
Free Shipping on orders $49 and up
10% off MSRP
$ 20.44

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 18.40 USD
Free Shipping on orders $49 and up
Motul Motylgear 75W80 is a gear oil/gearbox lubricant especially recommended for hard to shift gearboxes and also for BMW, Peugeot, Citroen, and Renault gearboxes. Motul has formulated Motylgear 75W-80 as an extreme pressure lubricant for efficient anti-wear protection and reinforced it with synthetic base stocks for a better resistance at high temperature and for longer life.
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