Put an end to drivetrain flex and destructive wheel hop. The S58 engine is an absolute torque monster, especially once you start tuning and turning up the boost. While aggressive launches and heavy acceleration are the best parts of owning these vehicles, the factory rear differential mounting wasn't designed to handle that kind of abuse.
The OEM soft rubber bushing allows excessive differential twist and flex under load. This deflection transfers massive, uneven force directly to the factory mounting bolt, leading to bending or catastrophic snapping. Our upgrade replaces that weak link, locking down your drivetrain to ensure every bit of horsepower reaches the pavement safely.
Features and Benefits:
95A Poly Isolator replacing the hollow, compliant stock rubber
Upgraded grade 12.9 M14x1.5 fastener to replace the factory 10.9 bolt that is prone to snapping
No noticeable compromise in ride quality and NVH that comes with a solid mount counterpart
Design:
95A Turner Blue Polyurethane isolator
6061-T6 Black anodized aluminum bushing sleeve
Optimized Sleeve and bushing press-fit, developed with years of Polyurethane subframe and differential bushing design
Zinc Yellow-Chromate plated Grade 12.9 Hardware
Two-piece sleeve design for ease of installation
Product Development:
Our F97/F98 differential mount was designed, engineered, tested, and quality-inspected by our Research and Development team at our Wadsworth, Ohio, facility. We strive for the highest level of precision and quality through leading-edge product development technology, including FARO laser scanning for reverse engineering and quality inspection, SolidWorks 3D CAD modelling, rapid prototyping utilizing our in-house 3D printer, and rigorous long-term product testing.
This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
The 6-speed Getrag 420G transmission, found in the European E36 M3 Evolution and E46 M3, has become an increasingly popular swap amongst E36 owners. Its increased strength, longevity, and overdrive sixth gear make it a great choice for both track cars and daily drivers. Unfortunately, many of the components needed to complete this transplant have become hard to source. Despite increased demand from enthusiasts, BMW has blocked the sale of European E36 M3 parts into North America.
With this in mind, our team of engineers went to work designing a direct replacement and upgrade for the unavailable, 420G-specific shifter arm. Precision-machined from 6061-T6 billet aluminum and clear anodized, our 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 our Double-Adjustable Short Throw Shifter Kit (T#557266).
Features & Benefits:
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 Confirmed compatibility with the Turner Motorsport Double-Adjustable Short-Throw Shifter Kit (T#557266) Product Development:
Our E36 420G Shifter Arm was designed, engineered, tested, and quality inspected by our Research and Development team. We strive for nothing but the highest level of precision and quality through leading-edge product development technology, including 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.
This product was last offered at the strikethrough price on
06-14-2026
This product was last offered at the strikethrough price on
06-14-2026
The 6-speed Getrag 420G transmission, found in the European E36 M3 Evolution and E46 M3, has become an increasingly popular swap amongst E36 owners. Its increased strength, longevity, and overdrive sixth gear make it a great choice for both track cars and daily drivers. Unfortunately, many of the components needed to complete this transplant have become hard to source. Despite increased demand from enthusiasts, BMW has blocked the sale of European E36 M3 parts into North America.
Recognizing this issue, we set out to develop a replacement for the unavailable, 420G-specific selector rod. 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 dual-shear selector rod is precision-machined from durable 304 stainless steel to further reduce deflection and resist corrosion.
Features & Benefits:
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) Works with the OEM shift lever and OE-style short-throw shifter kits Kit Includes:
Turner Motorsport Dual-Shear Selector Rod (DSSR) Turner Motorsport DSSR Connecting Pin (2) OE Shifter Lever Circlip (2) Product Development:
Our E36 420G DSSR was designed, engineered, tested, and quality inspected by our Research and Development team. We strive for nothing but the highest level of precision and quality through leading-edge product development technology, including 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.
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.
This product was last offered at the strikethrough price on
05-07-2026
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.
BMW E30 325i/iS DSSR (187mm) - Turner Motorsport is the ultimate solution to eliminate shifter slop, providing tighter and crisper shifts for your BMW. Developed in collaboration with Rennline, this Dual Shear Selector Rod (DSSR) is designed to significantly reduce flexibility in the selector rod, ensuring a more precise and responsive shifting experience. Whether you're using the stock shifter or a Turner short shift kit, this DSSR will enhance the accuracy of your gear selections with minimal effort.
Does not include a new selector rod joint.
Benefits:
Enhanced Shift Precision: Reduces play and deflection in the linkage, delivering a more positive feel in the shifter.
High-Quality Construction: Crafted from 303 stainless steel for superior corrosion resistance and long-lasting durability.
Compatible Design: Fits BMW E30 325i/iS models with selector rod part 25111221657 and selector joint part 25117580281.
Improved Performance: Works seamlessly with both stock and Turner Motorsport short shifters.
Complete Kit: Includes necessary hardware for easy installation and optimal performance.
This product was last offered at the strikethrough price on
06-10-2026
This product was last offered at the strikethrough price on
06-10-2026
