BMW Drivetrain Parts for BMW E30 M3 S14 2.3L

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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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E30 M3 JB Racing Lightweight Aluminum Flywheel
E30 M3 JB Racing Lightweight Aluminum Flywheel
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JB Racing - Corporate Logo
T#:3768
Part#: 520-050-228
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$ 630.00 USD
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Aluminum flywheels are much lighter than the stock steel flywheel and that produces better throttle response and more available horsepower to the wheels for faster acceleration. The JB Racing aluminum flywheels are a direct replacement for the stock flywheel and work with stock clutch components for an easy upgrade with very little downside.

Modern flywheels are built with additional components and features that are designed to dampen and minimize vibrations from the engine and transmission. As a result they have become bloated in weight and that means more energy is used up just making the flywheel spin. The weight difference between an aluminum and steel flywheel is huge - sometimes more than 50% less. Without the additional mass, more energy can be diverted to where it counts most - moving the car. The flywheel and clutch is one of the first areas that engine builders address when making the rotating assembly lighter for race engines. The dampening effect is just not needed on cars that are focused on performance.

In addition to releasing more power to the wheels, the lighter flywheel allows the engine to spin more freely, which improves throttle response. Again, the difference is huge as you watch the revs build faster than before. With the engine spinning easier the power band comes up much sooner. The stock steel flywheel feels lazy in comparison. There is a driving adjustment required to get used to how much faster the engine revs but that's not really a downside.

The JB lightweight flywheel is designed to be used with a factory organic clutch - the same clutch kit that you would get from any BMW dealer. This makes replacement clutch components easy to source and inexpensive when compared to specialized racing clutches. By using the factory BMW clutch, JB has also made the whole assembly easy to live with when used on the street. The clutch behaves the same as it originally did - just with better throttle response and more power! The JB flywheel can also be rebuilt with a new clutch contact surface - you don't have to buy a new flywheel.

Aluminum flywheels are considered 'single-mass' flywheels because they do not have the same dampening designs as an original 'dual-mass' flywheel. With a single-mass design more noise and vibration may be noticeable. There are steps you can take to minimize the noise - heavier weight transmission oil and clutch discs with anti-rattle springs (sprung-hub clutch).

The JB flywheel includes ignition trigger wheel.

Stock Flywheel Weight = 19.5lbs
JB Flywheel Weight = 8.0lbs

This item fits the following BMWs:
1987-1991 E30 BMW M3
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Elring Front Transmission Input Shaft Seal - E12, E23, E24, E28, E30, E32, E34
Elring Front Transmission Input Shaft Seal - E12, E23, E24, E28, E30,...
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Elring - Corporate Logo
T#:592089
Part#: 23121209311
In Stock
$ 7.13

This product was last offered at the strikethrough price on
03-10-2026

$ 5.90 USD
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$ 5.90 USD
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Replaces worn out or split seals causing a leak on the clutch side of the transmission.
Elring Output Shaft Seal - E10, E12, E21, E23, E24, E28, E3, E30, E32, E34, E9
Elring Output Shaft Seal - E10, E12, E21, E23, E24, E28, E3, E30, E32...
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Elring - Corporate Logo
T#:13243
Part#: 23121205340
In Stock
$ 9.99

This product was last offered at the strikethrough price on
04-10-2026

$ 4.99 USD
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$ 4.99 USD
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SHAFT SEAL:H23120
Elring Selector Shaft Seal - E36, E39, E46, E36 Z3
Elring Selector Shaft Seal - E36, E39, E46, E36 Z3
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Elring - Corporate Logo
T#:340660
Part#: 23121222677
In Stock
$ 5.14 USD
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$ 5.14 USD
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Rubber seals are often hardened and damaged by excessive heat and constant temperature changes causing them to become brittle and crack or split. If your seal has split, replace it with a new Elring seal for long reliability and to prevent further problems.

Elring is one of the biggest OEM names in the manufacturing of high quality gaskets that are available for very affordable prices. Elring has supplied many automotive names for years with the gaskets that seal your car's components from day 1 so you can rest assured that these components will last for a long time to come!

Fits the following BMW's:
E36, E39, E46, E36 Z3

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Elring Differential Axle Seal - E30 E36 E28 E34 E24 E23 E32 Z3
Elring Differential Axle Seal - E30 E36 E28 E34 E24 E23 E32 Z3 ...
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Elring - Corporate Logo
T#:369495
Part#: 33107505602
In Stock
$ 9.64 USD
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$ 9.64 USD
Free Shipping on orders $49 and up
Add to Wish List

Rubber seals are often hardened and damaged by excessive heat and constant temperature changes causing them to become brittle and crack or split. If your seal has split, replace it with a new Elring seal for long reliability and to prevent further problems.

Elring is one of the biggest OEM names in the manufacturing of high quality gaskets that are available for very affordable prices. Elring has supplied many automotive names for years with the gaskets that seal your car's components from day 1 so you can rest assured that these components will last for a long time to come!

Fits the following BMW engines:
E30 318i/is 325e 325i/ix M3
E36 318i/ic/is/ti 323i/is 325i/is 328i/is M3
E28 524td 528e 533i 535i
E34 525i 530i 535i
E24 633CSi 635CSi
E23 733i 735i
E32 735i/iL
Z3 1.9 2.5 2.5i 2.8 3.0i M Coupe/Roadster

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Elring Input Shaft Seal - E12, E23, E24, E28, E30, E32, E34
Elring Input Shaft Seal - E12, E23, E24, E28, E30, E32, E34
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Elring - Corporate Logo
T#:15236
Part#: 23121220619
In Stock at Vendor
$ 7.99 USD
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$ 7.99 USD
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This is the transmission input shaft seal for cars with the Getrag 260/5/50, 260/6, 265/6, 280, transmissions

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