What components are included in the SPEC E-Trim Twin Disc Clutch Kit?

This kit includes the twin-disc clutch assembly itself, a new pilot bearing to ensure proper input shaft alignment, and an alignment tool to assist with installation. These parts are essential for a complete and correct clutch replacement.

How does a twin-disc clutch differ from a stock single-disc clutch in my BMW?

A twin-disc clutch uses two friction discs instead of one. This doubles the surface area for engagement, which significantly increases the torque capacity and helps to dissipate heat more effectively. This makes it ideal for higher-horsepower applications where a stock clutch would slip.

Will this clutch kit require any special tools or modifications for installation?

The kit includes an alignment tool to aid in installation. While it's designed to fit the factory transmission bellhousing, twin-disc clutch installations can be more complex than single-disc setups and may require specific tools or procedures. It is always recommended to consult the manufacturer's installation guide or a professional mechanic.

Specifications

Brand: SPEC
Part #: SB53ET

Spec 07-09 BMW 135i/335i/535i (N54) (Till Feb 2009) E-Trim Twin Disc Clutch Kit

Name: Spec 07-09 BMW 135i/335i/535i (N54) (Till Feb 2009) E-Trim Twin Disc Clutch Kit
Brand: SPEC
SKU: spec-spec-07-09-bmw-135i-335i-535i-n54-till-feb-2009-e-trim-twin-disc-clutch-kit-t14-205807
Price: 1995.80 USD
Availability: BackOrder

$1995.80

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Spec E-Trim Twin Disc Clutch Kit SB53ET for 07-09 BMW 135i/335i/535i (N54, till Feb 2009). Handles high torque for modified N54 engines.

Key Features

Fits 2007-2009 BMW 135i, 335i, and 535i models with the N54 engine (up to February 2009 production date).
Includes twin-disc clutch assembly, pilot bearing, and alignment tool.
E-Trim design offers high torque capacity suitable for modified N54 engines.
Dual friction discs increase surface area for improved heat dissipation and engagement.
Designed to handle significant torque increases common in performance N54 builds.
Helps maintain consistent clutch engagement under demanding driving conditions.

This clutch kit is specifically designed for 2007-2009 BMW 135i, 335i, and 535i models equipped with the N54 engine, manufactured up to February 2009. Please verify your vehicle's production date and engine to ensure compatibility.

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About this part

Product Details

When you're looking to handle serious power in your 2007-2009 BMW 135i, 335i, or 535i equipped with the N54 twin-turbo engine, this SPEC E-Trim Twin Disc Clutch Kit (Part# SB53ET) is what you get. This kit includes the twin-disc clutch assembly, a pilot bearing, and an alignment tool. It's built to manage the significant torque increases common with modified N54 engines, offering a robust solution for drivers who demand more from their drivetrain.

The E-Trim design is SPEC's answer for a clutch that can handle extreme power while still being manageable for daily driving. It features two friction discs, which distribute the clamping force over a larger area. This not only increases the torque capacity but also helps to keep the clutch surface temperatures down, leading to longer life and more consistent engagement, even under heavy use. The kit is designed as a direct replacement for the factory clutch, simplifying the installation process, though it's important to note that twin-disc setups can sometimes require a slightly firmer pedal feel than a stock single-disc clutch.

For those pushing their N54 beyond stock performance levels, this twin-disc clutch is a well-built component that addresses the limitations of the factory clutch. It's a significant upgrade that ensures your drivetrain can put the power down effectively and reliably. Always refer to the manufacturer's installation instructions for specific details regarding the installation process and any required companion parts.