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

A twin-disc clutch uses two friction surfaces instead of one, which doubles the surface area. This allows for a much higher torque capacity without needing an excessively stiff pressure plate, making the pedal feel more manageable.

Is this clutch kit suitable for daily driving in stop-and-go traffic?

While this is a high-performance puck clutch designed for aggressive use, the twin-disc setup and SPEC's specific tuning aim to make it more streetable than a typical single-disc puck clutch. However, puck clutches can sometimes be less smooth in low-speed situations.

What components are included in the SPEC SB53PT clutch kit?

This kit includes the twin pressure plates, two semi-metallic puck-style friction discs, and a solid steel flywheel. It is designed as a complete replacement for your existing clutch assembly.

Specifications

Brand: SPEC
Part #: SB53PT

Spec 07-09 BMW 135/335/535 Super Twin PT-Trim Semi-Metallic Puck Clutch Kit w/Steel Flywheel

Name: Spec 07-09 BMW 135/335/535 Super Twin PT-Trim Semi-Metallic Puck Clutch Kit w/Steel Flywheel
Brand: SPEC
SKU: spec-spec-07-09-bmw-135-335-535-super-twin-pt-trim-semi-metallic-puck-clutch-kit-t14-4370140
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 2007-2009 BMW 135i, 335i, and 535i.
Features a twin-disc design for increased torque capacity.
Utilizes semi-metallic puck-style friction discs for aggressive engagement.
Includes a solid steel flywheel for durability.
The PT-Trim designation indicates a specific friction material for improved performance.
Designed to handle significant increases in horsepower and torque.

This clutch kit is designed for specific BMW models from 2007-2009. Please verify fitment with your vehicle's exact year, make, and model.

Secure CheckoutFast Shipping631-982-0042

About this part

Product Details

The SPEC Super Twin PT-Trim clutch kit utilizes a unique puck-style friction disc design, a choice made to handle significant increases in torque and horsepower. This setup is built for drivers who have heavily modified their 2007-2009 BMW 135i, 335i, or 535i and need a clutch that can keep up with the demands of spirited driving and track use. The twin-disc configuration spreads the clamping load across two smaller discs, which allows for a higher torque capacity without requiring an excessively stiff pedal feel.

This kit includes a solid steel flywheel, which is a robust choice for high-performance applications. The PT-Trim designation refers to a specific friction material that SPEC has developed for improved engagement and durability under extreme conditions. These semi-metallic pucks are designed to offer a strong bite and consistent performance, even when subjected to repeated high-heat cycles. While puck clutches can sometimes be a bit grabby in traffic, the twin-disc setup and SPEC's tuning aim to make this kit more manageable for daily driving than a single-disc puck clutch might be.

When installing a twin-disc clutch like this, it's important to ensure proper alignment of both discs and the pilot bearing. The kit comes with the necessary components to replace your original clutch assembly, including the pressure plates, friction discs, and the steel flywheel. This is a serious upgrade for a serious build, designed to handle the power you've put into your BMW and provide reliable engagement for years to come.