What is the advantage of a twin-disc clutch over a single-disc clutch?

A twin-disc clutch significantly increases the clutch's surface area. This allows for better heat dissipation and a much higher torque capacity, making it ideal for high-performance applications or vehicles with modified engines.

What does 'organic trim' mean for the clutch discs?

Organic trim refers to the friction material used on the clutch discs. This material is known for providing smooth engagement and comfortable drivability, making it a good choice for daily driving while still handling substantial power.

What is included in this SPEC Super Twin Disc Clutch Kit?

This kit includes two organic trim clutch discs, a proprietary SPEC pressure plate, and a billet steel flywheel. It is designed to be a complete replacement for your existing clutch system.

Specifications

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

Spec 11-12 BMW 135 Organic Trim Super Twin Disc Clutch Kit

Name: Spec 11-12 BMW 135 Organic Trim Super Twin Disc Clutch Kit
Brand: SPEC
SKU: spec-spec-11-12-bmw-135-organic-trim-super-twin-disc-clutch-kit-t14-460679
Price: 1847.04 USD
Availability: BackOrder

$1847.04

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits 2011-2012 BMW 135i.
Features a 1M spline count for secure engagement.
Organic trim friction surfaces offer smooth engagement and good drivability.
Twin-disc design increases surface area for improved heat dissipation and higher torque capacity.
Includes two organic trim clutch discs, a SPEC pressure plate, and a billet steel flywheel.
Billet steel flywheel provides superior strength and stability compared to cast iron.

This clutch kit is specifically designed for the 2011 and 2012 BMW 135i models. Please verify fitment for your specific vehicle before purchase.

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About this part

Product Details

This SPEC Super Twin Disc Clutch Kit, part number SB53SST-O-1M, features a 1M spline count and organic trim friction surfaces. This setup is built for the 2011-2012 BMW 135i, offering a robust solution for drivers looking to handle increased power or simply replace a worn-out clutch with a well-built, high-performance unit. The twin-disc design is key here; it significantly increases the clutch's surface area compared to a single disc, which helps dissipate heat more effectively and allows for a higher torque capacity. This means you can put down more power without worrying about the clutch slipping or overheating, making it a solid choice for modified vehicles or those that see frequent spirited driving.

The organic trim friction material is chosen for its smooth engagement and good drivability, making it suitable for daily use while still being able to handle significant power. This is a notable advantage over some more aggressive clutch materials that can be grabby and difficult to manage in stop-and-go traffic. The kit includes two organic trim clutch discs, a proprietary SPEC pressure plate, and a billet steel flywheel. Having a billet steel flywheel is important because it's much stronger and more stable than a cast iron one, which helps prevent warping under the extreme pressures and heat generated by a twin-disc setup. This combination ensures consistent performance and longevity, even under demanding conditions.

When installing a twin-disc clutch like this, it's important to ensure proper alignment and follow the manufacturer's specific break-in procedure. This typically involves a period of gentle driving without hard acceleration or prolonged slipping to allow the organic friction surfaces to properly mate with the flywheel and pressure plate. Doing this correctly will maximize the life and performance of your new clutch. This kit is designed as a complete replacement, so you'll have everything you need to get your BMW 135i's drivetrain back in top shape.