What is the benefit of a twin-disc clutch compared to a single-disc clutch?

A twin-disc clutch uses two friction discs, which doubles the surface area for engagement. This allows it to handle significantly more torque without slipping and generally offers improved durability for high-performance applications.

What is the advantage of an aluminum flywheel?

Aluminum flywheels are considerably lighter than traditional steel flywheels. This reduction in rotational mass can lead to quicker engine acceleration and a more responsive throttle feel, though it may slightly alter idle characteristics.

Does this clutch kit include everything needed for installation?

This SPEC SS-Trim Twin Disc Clutch Kit is designed to be comprehensive and typically includes the necessary pilot bearing and release bearing. It's always recommended to consult the manufacturer's installation guide for a complete list of included components and any additional items you might need.

Specifications

Brand: SPEC
Part #: SB53SST-1M-A

Spec 2011 BMW 1M / 11-12 BMW 135 / 11-17 335 SS-Trim Twin Disc Clutch Kit w/ Aluminum Flywheel

Name: Spec 2011 BMW 1M / 11-12 BMW 135 / 11-17 335 SS-Trim Twin Disc Clutch Kit w/ Aluminum Flywheel
Brand: SPEC
SKU: spec-spec-2011-bmw-1m-11-12-bmw-135-11-17-335-ss-trim-twin-disc-clutch-kit-w-alu-t14-480907
Price: 1925.91 USD
Availability: BackOrder

$1925.91

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Spec SS-Trim Twin Disc Clutch Kit w/ Aluminum Flywheel for 2011 BMW 1M, 11-12 135, 11-17 335. Handles high torque for demanding builds.

Key Features

Fits 2011 BMW 1M, 2011-2012 BMW 135i, and 2011-2017 BMW 335i.
Features a billet aluminum flywheel for reduced rotational mass.
Twin-disc design offers increased torque capacity and durability.
SS-Trim friction material provides a balance of engagement and wear resistance.
Includes necessary pilot bearing and release bearing for a complete installation.

This clutch kit is designed for the 2011 BMW 1M, 2011-2012 BMW 135i, and 2011-2017 BMW 335i. Always confirm fitment with your specific vehicle details.

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About this part

Product Details

This SPEC SS-Trim Twin Disc Clutch Kit features a billet aluminum flywheel, a choice often made for its significant weight savings compared to steel. This particular setup is engineered for high-torque applications, making it a solid option for BMW models like the 2011 1M, 2011-2012 135i, and 2011-2017 335i that are seeing more power added or are used in demanding driving scenarios.

The twin-disc design is key here. It means the clutch has two friction surfaces for each side of the flywheel, effectively doubling the clamping area. This allows the clutch to handle substantially more torque without slipping, which is crucial when you've upgraded your engine's output. The SS-Trim designation usually points to a specific friction material that balances engagement feel with durability under stress. The billet aluminum flywheel not only reduces rotational mass, which can improve engine response and acceleration, but it's also a strong, well-built component designed to withstand the rigors of repeated engagement and disengagement.

When installing a twin-disc clutch like this, it's important to note that it often requires a specific pilot bearing and release bearing, which are typically included in the kit. Proper alignment and careful installation are critical to ensure smooth operation and longevity. This kit is designed to be a comprehensive solution for those looking to significantly upgrade their vehicle's drivetrain capacity.