What is the primary benefit of a twin-disc clutch over a single-disc setup?

A twin-disc clutch has two friction surfaces, which significantly increases its torque holding capacity. This makes it ideal for high-horsepower or high-torque applications where a single-disc clutch might slip.

Does this SPEC clutch kit include everything needed for installation?

This kit includes the twin-disc clutch assembly. It is recommended to inspect and potentially replace your flywheel and pilot bearing during installation, as these are often sold separately.

How does the ST-Trim design affect pedal feel and drivability?

The ST-Trim is SPEC's designation for a clutch that offers substantial holding power while maintaining a more comfortable and manageable pedal feel compared to other high-performance twin-disc setups, making it suitable for daily driving.

Specifications

Brand: SPEC
Part #: SB55ST

Spec 12-17 BMW M3 / 15-17 BMW M2 / 13-17 BMW M4 ST-Trim Twin Disc Clutch Kit

Name: Spec 12-17 BMW M3 / 15-17 BMW M2 / 13-17 BMW M4 ST-Trim Twin Disc Clutch Kit
Brand: SPEC
SKU: spec-spec-12-17-bmw-m3-15-17-bmw-m2-13-17-bmw-m4-st-trim-twin-disc-clutch-kit-t14-130537
Price: 2095.64 USD
Availability: BackOrder

$2095.64

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SPEC ST-Trim Twin Disc Clutch Kit for BMW M3, M2, M4. This twin-disc setup handles high torque and offers improved engagement.

Key Features

Fits 2012-2017 BMW M3, 2015-2017 BMW M2, and 2013-2017 BMW M4.
Features a twin-disc design for increased torque capacity.
ST-Trim designation indicates a balance of high holding power and manageable pedal feel.
Sprung center design in the friction discs helps absorb shock and improve engagement.
Designed as a direct replacement for the factory clutch assembly.

This clutch kit is designed to fit 2012-2017 BMW M3, 2015-2017 BMW M2, and 2013-2017 BMW M4 models. Always confirm compatibility with your specific vehicle's configuration.

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About this part

Product Details

The SPEC ST-Trim Twin Disc Clutch Kit utilizes a unique sprung center design within its two friction discs. This approach is key for managing the significant torque output of performance BMW models like the M3, M2, and M4, while also providing a more comfortable pedal feel than many other high-performance clutch options. This kit is built for drivers who push their vehicles hard, whether on the street or the track, and need a clutch that can keep up without sacrificing drivability.

This twin-disc setup is engineered to handle substantial power increases. The dual friction surfaces mean more holding capacity, which is crucial when you've modified your engine for more horsepower. The ST-Trim designation specifically points to a design that balances extreme holding power with a surprisingly manageable pedal effort, making it suitable for daily driving as well as spirited performance use. It’s a well-built component designed to be a direct replacement for your factory clutch, simplifying the installation process for a qualified mechanic.

When installing a twin-disc clutch like this, it's important to ensure your flywheel is in excellent condition or to replace it as recommended. This kit is a significant upgrade for your drivetrain, offering improved engagement and the confidence to handle more power. It's a solid choice for BMW owners looking to enhance their vehicle's performance capabilities.