Turner Motorsport for BMW 3 Series E90 (2006-2011)

A full overhaul of your shift setup. Short shift upgrade featuring an exclusive N54 DSSR, poly carrier bushing and associated components to transform your driving experience.

The double-adjustable short shifter kit features both shift lever height and throw adjustment to dial in the exact shifter feel you are looking for. Paired with the N54 DSSR this kit features upgraded replacements for your entire shift assembly with a whole new shift carrier, bushings, lever, and selector rod. Did we mention this will work with any factory-style press on shift knob?

If you're aiming to install a short throw shifter setup or completely rejuvenate your shifting assembly, this comprehensive kit is your perfect solution. It leaves no aspect untouched, upgrading all components simultaneously, eliminating the need for troubleshooting later to address any play in your shifter. We've all experienced the frustration of piecemealing upgrades, only to find ourselves cobbling together the rest of the kit in a longer, more tedious process. With this kit, you can get it right the first time and avoid any disappointment.

Performance advantages:

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

CNC machined chromoly steel shift lever assembly with 304ss shifter ball
Nylatron bushings
6061 Bearing cup assembly with type 2 anodizing for an amazing look and corrosion reistance
Shift level is compatible with OE BMW and aftermarket shift knobs
Reduced deflection from the rigid DSSR
Kit Contents:

Shifter arm assembly - 25117545110
Shifter arm bushings - 25117528407
Bearing pins - (25117529078 and 25117529079)
Turner poly rear shifter arm bushing - (25111222015 and 25111222652)
Shift lever assembly - 25117555911
Shifter lever cap assembly
Short shift lever adapter
E8x/E9x DSSR - 25117524722

Turner Motorsport has Gift Cards available for everyone on your shopping list! They are available in any amount you choose - simply select your denomination, add to cart, and you're off to the races.

Each Turner Motorsport Gift Card features a dramatic photograph of a Turner Motorsport BMW.

Single piece 6061 construction, optimized cooling, provisions for temp sensor, and external cooler with removable air duct.

Built to last, made from a single piece of 6061 billet aluminum with a rugged and good-looking hard-coat anodizing the Turner diff cover can handle anything you throw at it. Not only is it an absolute masterpiece, but this billet diff cover checks all the boxes for features needed. Reinforced mounting ear for strength and stability. The mounting ear is unified with the one-piece billet cover and features added material for the highest durability possible. This diff cover is cool, literally, the entire construction was designed with optimized cooling in mind. External fins are strategically placed on the rear face, bottom, and between the mounting ears of the cover, serving as effective heat sinks for optimal heat dissipation. This ensures stable temperatures, promoting longevity for both the fluid and your differential. Additionally, the internal design ensures continuous oiling and lubrication of the ring gear, maintaining its stability and preventing fatigue by controlling heat more effectively. An internal baffle at the cover's corner helps maintain proper pressure and prevents cavitation.

All of the OEM features were retained along with the upgrades. The drain and fill plugs on the diff cover are upgraded to -6AN using the provided high-pressure fittings with replaceable o-rings. The drain and fill plugs can now be used for an external oil cooler allowing you to further expand the fluid capacity for optimized cooling and service intervals. To keep an eye on things from the driver seat is 1/8 NPT provision for temp sensors, this product from Turner has you covered at every turn.

Upgrading to our Turner Billet Differential cover gives you the strength you need to push your car to its limits without worrying about snapping a diff mount from clutch kicking or other shocks to the drivetrain. In addition to its enhanced strength, this differential cover includes numerous other upgrades and conveniences. These include improved cooling and lubrication for the ring gear, upgraded fill and drain plugs, and the option to expand an external oil cooler for extreme motorsport usage. Designed to complement both upgraded daily drivers and extensively modified track cars, it also offers a visually appealing design.

Key Benefits:

Reinforced mounting ear for strength and stability 16% Increased fluid capacity External fins on the back side, bottom, and mounting ear on the casing for maximum cooling and consistent fluid temps Removeable air duct to direct air across the cooling fins for even more temperature control Optimized internal design to keep fluid consistently on the ring gear Integrated breather to prevent cavitation by venting the appropriate amount of pressure being built up in the diff housing -6AN ports to incorporate the use of a differential cooler - this increases capacity and lowers temps allowing for extended fluid change intervals 1/8 NPT fitting for the use of a temp sensor to monitor fluid temperature Design:

Fits manual transmission Large Case 215mm differentials Single piece 6061 Billet aluminum construction T6 Black hard coat anodizing for superior corrosion resistance and aesthetics Compatible with most differential coolers(-6AN) and temp sensors(1/8 NPT) Designed to accommodate oversized rear sway bars Retains OEM mounting features Factory geometry bushing size for use with OEM and aftermarket poly bushings Removeable air duct for easy access to sensors and drain/fill plug

If you own an M57-equipped BMW, you already know this twin-turbo diesel powerplant is an absolute torque monster. What you might also know is that all that low-end grunt and high-compression diesel vibration wreaks absolute havoc on your accessory drive system.

From the factory, both the E90 335d and E70 X5 35d utilize a rigid alternator pulley. With each cylinder's fire, the crankshaft experiences a violent micro-acceleration. Because the alternator has a heavy internal rotor spinning at high speeds, it wants to keep spinning at a constant rate. When the engine suddenly slows down (even minutely between firing cycles), the alternator fights the belt. This constant tug-of-war results in extreme stress on your engine's belt-driven components. At best, it’s an annoying, unrefined chirp at idle; at worst, it’s a ticking time bomb for your expensive harmonic balancer.

To solve this issue, many enthusiasts choose to run a clutched alternator pulley (also called an overrunning alternator pulley). A clutched pulley allows the alternator to "freewheel" or coast when the engine slows down, completely isolating its rotational inertia from the belt drive to prevent component wear. While the N52's clutched pulley (12317560483) is a straight bolt-on, the offset is incorrect for the E90 335d's accessory drive. Thankfully, our engineers designed this zinc-coated spacer to provide the precise amount of spacing needed to perfectly align the new pulley with existing belt drive components.

Engineered for relentless track abuse, the Turner Motorsport Hydraulic E-Brake Mount delivers direct, uncompromising rear-wheel lockup for the E9X chassis. Forget flimsy universal brackets and custom fab work, this is a purpose-built, high-precision bolt-in assembly developed in-house using advanced 3D chassis scanning and CAD modeling to guarantee exact fitment and maximum leverage.

Constructed around a rigid 11-gauge steel base plate, this mount eliminates structural deflection under heavy loading, ensuring consistent hydraulic pressure when initiation matters most. The heart of the system relies on a 6061 billet aluminum bell-crank pivot paired with Teflon-lined spherical rod ends, delivering instant, slop-free actuation. By orienting the master cylinder longitudinally alongside the shifter, line plumbing and cylinder maintenance remain completely accessible, all while requiring only minimal trimming to the factory console. Built lightweight, durable, and track-ready, it’s the definitive performance upgrade for drivers demanding total chassis control.