BMW Drivetrain Parts

The factory BMW S65 dual-mass flywheel is engineered with comfort in mind, catering to the luxury-oriented expectations of the brand’s driving experience. Its design focuses on dampening drivetrain vibrations, smoothing out gear transitions, and minimizing harshness during operation. However, this refinement costs valuable performance. The dual-mass flywheel adds a substantial 27 lbs of rotational mass to the drivetrain, which significantly hinders throttle response and makes rev-matching feel sluggish and disconnected. Moreover, dual-mass flywheels are notorious for being a weak link in modified or high-performance builds and can prove costly to replace when they inevitably fail.

Our Single-Mass Lightweight Flywheel Conversion addresses all of these shortcomings with a purpose-built, lightweight, single-mass design that prioritizes performance. Weighing in at only 19 lbs., this design significantly reduces rotational mass, allowing your S65 to achieve its true motorsport potential!

Features & Benefits:

Precision machined from 4140 HT heat-treated chromoly steel for exceptional toughness, even wear properties, and increased durability.
Material quality promotes even wear across the entire friction surface, prolonging component lifespan.
Heat treated to HRC 28-32, tempered to relieve stress and improve dimensional stability.
Hardness improves component wear characteristics.
Black oxide coated for corrosion resistance on non-friction surfaces.
Precision balanced to exceed OEM specification (G16 spec to 175g-mm).
Specifically designed to work with S65 OE-architecture clutches.
Optimized step height maximizes clutch clamp load and offers a prolonged service life.
Performance:

8 lbs. lighter than the factory BMW flywheel!
OEM Dual-Mass: 27 lbs.
Turner Motorsport Single-Mass: 19 lbs.
Faster revs
Improved throttle response and acceleration
Allows for a more engaging driving experience and delivers a feeling of direct connection
Installation:

Flywheel Hardware: For added peace of mind, apply Blue or Orange Loctite when installing factory flywheel bolts that do not come with pre-applied threadlocker.

Enhance rear-end control and put more power to the ground with a straightforward 3-piece design that installs with ease. The factory rubber may favor ride comfort, but it struggles to keep up when driving gets aggressive. As it wears, the OEM bushing can soften and deform, reducing stability and allowing wheel hop to creep in when you need traction most.

Our 95A durometer polyurethane bushings solve that problem. Engineered to strike the perfect balance between soft factory rubber and harsh solid mounts, they significantly reduce differential movement without introducing excessive vibration. The result is more efficient power transfer, so your torque goes straight to the rear wheels instead of being lost in drivetrain flex.

Features & Benefits:

Minimizes differential movement and instability to help eliminate wheel hop
Two-piece 95A split polyurethane design for easier installation
Precision-fit insert reinforces the bushing and strengthens mounting points
Resistant to road salt, oils, and harsh chemicals
Compatible with dual mount differential plates
Design:

Type II Anodized 6061-T6 CNC billet aluminum inserts for superior corrosion resistance and durability.
95A Polyurethane 2-Piece Isolator.
Product Development:

Our Rear Differential Bushings are designed, engineered, tested, and quality inspected by our Research & Development team. Our development process includes leading-edge product technology: FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modeling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.

Complete your Getrag 420G six-speed manual swap with a comprehensive shifter solution engineered for precision and durability. This all-in-one kit features our double-adjustable short shifter, dual-shear selector rod, heavy-duty shifter arm, upgraded bushings, and all required installation hardware for crisp gear engagement, reduced shifter slop, and confidence-inspiring performance you'll feel with every shift!

TURNER MOTORSPORT DOUBLE ADJUSTABLE SHORT SHIFT KIT

BMWs have historically been plagued by very long throw shifters from the factory - luckily, we've developed the solution. Our short shifter system is height- and throw-adjustable, offering up to a 52% reduction in throw over stock. Double adjustability enables you to find the sweet spot that will make you excited to drive your car again. Installation of this kit is also of the easiest to tackle. Compared to the competition, a custom bearing cup allows for easy installation from inside the car (on applications that use the stock shifter arm).

Benefits:

Adjustable between a conservative short throw to ultra short throw Ultra crisp shifter feel - quicker, more precise shifts More engaging driving experience Adjustability:

Independently adjustable knob height 22mm adjustment range to fine-tune shifter throw and feel. Note: knob height also affects throw reduction to some degree Independently adjustable shifter throw Adjustable by raising and lowering the lower lever position relative to the pivot ball. Note: ball position also affects knob height by ~10mm range Combined total throw adjustment range ​32 to 52 % reduction in throw over stock E36 shifter. A throw adjustment can be done in the car without removing the shifter DSSR (109MM) - E36 420G

Like all OEM selector rods, the factory part uses single-shear attachment, allowing for deflection within the shifter linkage. The result? Vague, imprecise gear selections that detract from your overall driving experience. The dual-shear selector rod (DSSR) design spreads the torsional force of gear selections across the selector rod joint, reducing deflection for increased precision. Our DSSR is precision-machined from durable 304 stainless steel to further reduce deflection and resist corrosion.

Features:

Provides a more positive feel in the shifter by reducing play in the linkage due to minimized deflection Manufactured from 304 stainless steel for superior corrosion resistance and durability Replacement for 25112228055 (European E36 M3 Evolution) HEAVY-DUTY SHIFTER ARM - E36 420G

To cater to the six-speed swap E36 community, we designed a direct replacement and upgrade for the unavailable, 420G-specific shifter arm. Precision-machined from 6061-T6 billet aluminum and clear anodized, this replacement carrier is durable, lightweight, and built to last. It is dimensionally identical to the OEM carrier, ensuring compatibility with the OEM shift carrier bushing, shift lever, and Turner Motorsport Double-Adjustable Short Throw Shifter Kit.

Features:

6061-T6 billet aluminum construction provides excellent durability and longevity Mil-spec clear anodized for superior corrosion resistance Dimensionally identical to its OEM counterpart, ensuring compatibility with all factory shifter components POLYURETHANE SHIFTER ARM BUSHING

This shifter bushing is designed to remove the shifter play caused by an old, failed rubber shifter bushing. Manufacturing the bushing from polyurethane instead of rubber reduces the amount of stretch caused by the moving part through the bushing. This maintains the direct crisp feel from your shifter assembly. When your OE shifter arm bushing begins to fail, you will notice slop in shifting, potentially making it easier to miss gears, and it often causes an obvious vibration and movement from the engine RPMs.

Features:

Corrosion-resistant 304 stainless steel mounting sleeve with bonded 70a polyurethane Stiffer bushing results in a crisper shifter feel and a more engaging driving experience. Ready to install out of the box - no modifications required Replaces Genuine BMW part numbers 25111222015 and 25111222652 Improved durability over OEM rubber Made in America Check out the "KIT CONTENTS" tab for a detailed list of everything included in this kit!