BMW Drivetrain Parts for BMW X Series E83 (2004-2010)

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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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ECS - Corporate Logo
T#:364033
Part#: 013236ECS01A
In Stock
Sale - Save 25% $ 56.99

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06-13-2026

$ 42.74 USD
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This product was last offered at the strikethrough price on
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$ 42.74 USD
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This brass clutch pivot pin is an upgrade over the stock plastic pivot pin. The brass pin will last a lot longer than the plastic piece and may save you time and hassle later on. The original plastic pivot pin is known to fall out, snap, or just wear out over time. At the least you get a very annoying squeak every time you depress the clutch. In a worse case scenario, the clutch fork won't be able to push on the throw-out bearing and your clutch will be useless. The only time to replace the clutch pivot pin is when the transmission is removed, so this brass upgrade can be installed during clutch replacements or a rear main seal service.
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ECS - Corporate Logo
T#:366828
Part#: 009314ECS01A
In Stock
Sale - Save 25% $ 62.99

This product was last offered at the strikethrough price on
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$ 47.24 USD
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$ 62.99

This product was last offered at the strikethrough price on
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$ 47.24 USD
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You use a magnetic drain plug for your engine oil, right? Why not apply the same proactive thinking to the differential too? This is a direct replacement magnetic differential drain plug for your BMW. It will catch and retain fine and larger metal particles in your diff oil. If you're proactive in your diff oil servicing, you will catch a minor issue long before it becomes a headache. Diff drain plug includes one sealing o-ring. Direct replacement for Genuine BMW part number(s): 33117525064, 33110308370, 33110152626
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ECS - Corporate Logo
T#:552465
Part#: 009536ECS01
In Stock
Sale - Save 20% $ 63.99

This product was last offered at the strikethrough price on
06-14-2026

$ 51.19 USD
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Sale - Save 20%
$ 63.99

This product was last offered at the strikethrough price on
06-14-2026

$ 51.19 USD
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This braided stainless steel line replaces the stock hydraulic hose connecting your clutch slave cylinder to the clutch master cylinder. There are several deficiences with rubber, especially as it ages - when new the rubber expands and swells under pressure and the pedal can feel spongy. As rubber ages and is exposed to extreme temperatures the rubber can harden and even shrink (common on brake hoses), which results in a stiff pedal. Rubber clutch lines do not stand up to the stresses of hard use. ECS Exact-Fit stainless reinforced clutch lines provide more confident and dependable shifting by maintaining consistent line pressure, long lasting corrosion resistance, and increased protection from failure. These lines are reinforced with braided stainless steel mesh, affording superior expansion resistance. This resistance to expansion creates a firmer pedal, and a more direct clutch pedal feel. The signature red polymer coating provides additional protection from the elements and abrasion.

This particular stainless steel clutch line fits the following BMWs:
1999-2005 E46 3 Series (all) including 323i, 323Ci, 325i, 325xi, 325Ci, 328i, 328Ci, 330i, 330xi, 330Ci
2001-2006 E46 M3 (manual transmission only, no SMG)
2004-2009 X3 SAV including X3 2.5, X3 3.0

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ECS - Corporate Logo
T#:552857
Part#: 025851ECS01
In Stock
Sale - Save 25% $ 39.99

This product was last offered at the strikethrough price on
06-14-2026

$ 29.99 USD
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Sale - Save 25%
$ 39.99

This product was last offered at the strikethrough price on
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$ 29.99 USD
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Some modifications to your vehicle may not produce power to create gains in the overall performance of your driving. When you add a "Po' Boy" clutch stop to your BMW the performance gain is directly felt in the driving experience.
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ECS - Corporate Logo
T#:5608746
Part#: 008636LA01
In Stock
Sale - Save 15% $ 84.99

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$ 72.24 USD
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Sale - Save 15%
$ 84.99

This product was last offered at the strikethrough price on
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$ 72.24 USD
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Improve clutch pedal feel with this simple, yet dramatic upgrade
ECS - Corporate Logo
T#:378192
Part#: 002447ECS02KT
In Stock
Sale - Save 25% $ 183.99

This product was last offered at the strikethrough price on
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$ 137.99 USD
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Sale - Save 25%
$ 183.99

This product was last offered at the strikethrough price on
06-13-2026

$ 137.99 USD
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Worn rubber differential mounts will lead to the differential twisting and shifting around in the rear subframe. Not only will this be noisy but it's bad for driver confidence and bad for the chassis as well. Even on fresh rubber bushings the differential has deflection and twist, especially if the car has been modified for more torque. Since the differential is centrally mounted in the rear subframe, with all suspension mounts interconnected, a differential with too much deflection will affect handling and could even damage the rear subframe.

These 88A urethane E46 diff mounts are much stiffer than stock but still not as solid as our Turner aluminum/Delrin bushings. This set will resist twisting much better than the stock rubber mounts. Included are the two front diff mounts and the rear mount in the cover.

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ECS - Corporate Logo
T#:363117
Part#: 002447ECS03
In Stock
Sale - Save 25% $ 88.99

This product was last offered at the strikethrough price on
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$ 66.74 USD
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Sale - Save 25%
$ 88.99

This product was last offered at the strikethrough price on
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$ 66.74 USD
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BMW E46 Z4 Rear Polyurethane Differential Bushing Performance is the ultimate upgrade for enhancing the connection between your BMW's chassis and differential. Designed by Turner Motorsport, this performance bushing replaces the soft factory rubber with durable polyurethane, offering superior control and response. By minimizing vibrations and reducing deflection, this bushing ensures a more direct and responsive driving experience, making it a must-have for any performance-oriented BMW E46 or Z4 owner.

  • Enhanced Performance: Replaces the soft factory rubber with durable polyurethane for improved driveline response.
  • Reduced Vibrations: Minimizes vibrations between the chassis and differential, providing a more connected driving experience.
  • Increased Durability: Made from high-quality polyurethane, offering long-lasting performance under demanding conditions.
  • Improved Control: Reduces deflection, ensuring a more precise and responsive handling experience.
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JB Racing - Corporate Logo
T#:3474
Part#: 520-190-240
Ships in 3 Business Days
$ 672.00 USD
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$ 672.00 USD
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This is a performance replacement for BMW Part # 21207533868 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 the pilot bearing mounted in the flywheel hub, just like the factory configuration.

Stock Flywheel Weight = 25.0lbs
JB Flywheel Weight = 10.5lbs

This item fits the following BMWs:
2002-2005 E46 BMW 325i 330i (with 6-speed manual transmission)
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ECS - Corporate Logo
T#:638794
Part#: 005960LA01
In Stock
Sale - Save 20% $ 49.99

This product was last offered at the strikethrough price on
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$ 39.99 USD
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This product was last offered at the strikethrough price on
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This is a must-have for ALL BMWs, and simply installs in place of your existing drain plug. With every fluid change you perform on your BMW, you'll be able to inspect for metal shavings and debris. Many times, if something is going wrong on your BMW's transmission, the magnetic drain plug can give you an early warning. Replaces genuine BMW transmission drain plug with gasket ring:23117531356
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ACT - Corporate Logo
T#:29002055
Part#: 601170
In Stock at Vendor
Sale - Save 10% $ 830.00

This product was last offered at the strikethrough price on
07-22-2026

$ 747.00 USD
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$ 830.00

This product was last offered at the strikethrough price on
07-22-2026

$ 747.00 USD
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The ACT Streetlite flywheel offers the following benefits:

Noticeably improved engine response and acceleration: Experience a significant boost in engine performance and acceleration with this component. OE to mild gear rattle: Expect only minimal gear rattle, from Original Equipment (OE) standards to a mild level, ensuring a smoother drive. Heat-treated forging for strength and toughness: Crafted using heat-treated forging, this part guarantees enhanced strength and durability. Induction-hardened ring gears for maximum life: The ring gears undergo induction hardening, providing maximum lifespan and reliability. One-piece construction allows less opportunity for failure and provides uniform efficient heat transfer from the clutch disc: The one-piece design reduces potential failure points and ensures uniform and efficient heat transfer from the clutch disc, preventing issues like warped inserts or loose ring gears. Recommended for street and race use: This component is ideal for both everyday street driving and competitive racing environments.

Forged, CNC machined, and dynamically computer balanced for smooth high RPM reliability: Expertly forged, CNC machined, and dynamically balanced via computer to ensure smooth and reliable performance at high RPMs.

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ACT - Corporate Logo
T#:15744083
Part#: BM15-HDSS
In Stock
Sale - Save 10% $ 862.00

This product was last offered at the strikethrough price on
07-22-2026

$ 775.80 USD
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Sale - Save 10%
$ 862.00

This product was last offered at the strikethrough price on
07-22-2026

$ 775.80 USD
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