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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

An excellent performance upgrade so you can enjoy quicker revs and eliminate excess turbo lag. Made of high quality 6061-T6 billet aluminum, with a high-carbon steel replaceable friction surface, this flywheel from Clutch Masters is sure to be a great upgrade for anyone looking to reduce crankshaft drag and increase acceleration.

Typical benefits of a Clutch Masters lightweight flywheel:

• Reduced mass equals increased acceleration
• CM uses only 6061-T6 aircraft grade or better billet aluminum in the manufacturer of its flywheels
• CM uses an OE steel ring gear secured by bolts
• CM offers a limited lifetime warranty
• CM Billet Aluminum Flywheels meet SFI Spec 1.1 or 1.2

This is the stock OE BMW twin mass flywheel for the N54 engine in later E82 135i, E9X 335i, E60 535i, and Z4 35i (cars with 6-bolt mounting hub). Sachs recommends a new dual mass flywheel (DMF) on every other clutch replacement. There are several indicators for replacing the flywheel: damage to the clutch contact plate (from a severely worn clutch disc), grease leaking from inside (overheating), build-up of clutch material on the contact plate (excessive slipping and overheating), and failure of the internal damping system.

The dampening system uses rubber or coil springs to absorb driveline vibrations. Through age, excessive heat, and aggressive use the rubber loses its resilience and the metal springs lose their strength and become brittle. If the clutch and flywheel have become overheated the internal grease may break down as well. A DMF failure can be massive and catastrophic, not to mention dangerous as bits of metal and rubber fling themselves through the transmission bellhousing. Heat and aggressive driving will accelerate the wear so race and track cars should have their stock flywheels replaced at regular intervals or with any new clutch. Even normal street cars should plan for a new flywheel if it has high mileage.

DMF wear can only be checked with the transmission and clutch removed. If you can rotate the outer flywheel more than 20mm in either direction then it should be replaced.

A new pilot bearing (roller bearing) is included, pre-installed in the flywheel hub.

This item fits the following BMWs:
1/2009-2010 E82 BMW 135i
1/2009-2010 E90 BMW 335i 335xi 335i xDrive - Sedan
1/2009-2010 E92 BMW 335i 335is 335xi 335i xDrive - Coupe
1/2009-2010 E93 BMW 335i - Convertible
1/2009-2010 E60 BMW 535i 535xi 535i xDrive

The FX350 System uses the Power Plus I Pressure Plate with Clutch Masters New Formula Button disc. This clutch is designed for the street enthusiast or weekend racer who plans to abuse their vehicle on an occasional basis and have a spirited driving style.

The FX350 clutch system has a higher holding capacity than a segmented Kevlar lining without compromising the street friendly characteristic Clutch Masters is known for. For year’s enthusiast have had to compromise durability for drivability and vise versa, however with Clutch Masters New Formula button we have closed the gap between these two tradeoffs.

*This clutch kit does not include a flywheel. Requires use of single mass flywheel 

Upgrade the holding power of your clutch with the Clutch Masters FX250 clutch kit.

FX250 (Stage II)

• Extra long life street system
• Holding capacity 70% over stock
• Heavy-Duty reinforced pressure plate
• Sprung organic/fiber tough disc

All Clutch Masters clutch kits come complete with:

• Pressure Plate
• Clutch Disc
• Throw-out Bearing
• Pilot Bearing or Bushing
• Alignment Tool
• Pressure Plate Bolts

This clutch kit does not include a flywheel. Requires use of single mass flywheel 

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Rigid Disc version

• FX500 (Stage 4)

• High performance street system

• Holding capacity 70% over stock

• Heavy-Duty reinforced pressure plate

• Hi-Leverage™ pressure ring design

• Sprung hub/cushioned disc

• Steel-backed 6-puck Ceramic Sprung Disc friction material

*Does not include flywheel.

*For vehicles with production date up to 01/2009

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version.

• FX400 (Stage 4)

• High performance street system

• Holding capacity 70% over stock

• Heavy-Duty reinforced pressure plate

• Hi-Leverage™ pressure ring design

• Sprung hub/cushioned disc

• Steel-backed Ceramic Lined Sprung Disc friction material

*This clutch kit does not include a flywheel. Requires use of single mass flywheel 

*For vehicles with production date up to 01/2009 

Performance clutch installation kit includes everything you need for a stage one clutch upgrade. Dampened Disc version.

• FX400 (Stage 4)

• High performance street system

• Holding capacity 70% over stock

• Heavy-Duty reinforced pressure plate

• Hi-Leverage™ pressure ring design

• Sprung hub/cushioned disc

• Steel-backed Ceramic Lined Sprung Disc friction material

*This clutch kit does not include a flywheel. Requires use of single mass flywheel 

*For vehicles with production date up to 01/2009