What components are included in the SPEC Stage 3+ Clutch Kit?

This kit comes complete with a high-performance pressure plate, a sprung hub clutch disc, and a new release bearing. These parts work together to provide increased holding capacity for modified vehicles.

Is a new flywheel required for this clutch kit installation?

While this kit includes the essential clutch components, it is highly recommended to inspect your existing flywheel. Resurfacing or replacing the flywheel is often necessary to ensure proper clutch engagement and longevity.

What is the recommended break-in procedure for this clutch?

SPEC typically recommends a break-in period for their performance clutches. It's important to follow the manufacturer's specific instructions, which usually involve a series of gentle accelerations and decelerations without hard launches or excessive slipping.

Specifications

Brand: SPEC
Part #: SB453F

Spec 04-06 BMW 545/645 4.4L / 06-09 BMW 550/650 4.8L Stage 3+ Clutch Kit

Name: Spec 04-06 BMW 545/645 4.4L / 06-09 BMW 550/650 4.8L Stage 3+ Clutch Kit
Brand: SPEC
SKU: spec-spec-04-06-bmw-545-645-4-4l-06-09-bmw-550-650-4-8l-stage-3-clutch-kit-t14-164005
Price: 907.55 USD
Availability: BackOrder

$907.55

On Backorder

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Fits 2006-2009 BMW 550i. SPEC Stage 3+ Clutch Kit. Handles higher horsepower and torque for improved performance.

Key Features

Fits 2004-2005 BMW 545i, 645Ci (4.4L) and 2006-2009 BMW 550i, 650i (4.8L).
Includes a high-performance pressure plate, clutch disc, and release bearing.
Stage 3+ performance level is suitable for vehicles with increased horsepower and torque.
Sprung hub clutch disc design helps absorb drivetrain shock and vibration.
Designed for street use with the capability for occasional track day performance.

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About this part

Product Details

This SPEC Stage 3+ clutch kit includes a high-performance pressure plate, a robust clutch disc, and a new release bearing. It's designed to handle the demands of modified BMWs with increased horsepower and torque, making it a solid choice for those looking to upgrade their drivetrain's capability. This kit is specifically engineered for the 4.4L V8 engines found in the 2004-2005 BMW 545i and 645Ci, as well as the 4.8L V8 engines in the 2006-2009 BMW 550i and 650i.

The Stage 3+ designation means this clutch offers a significant increase in holding capacity over stock, suitable for cars that have seen performance modifications. The clutch disc features a sprung hub design, which helps to absorb some of the shock and vibration that can come with a higher-engagement clutch, contributing to a more comfortable driving experience than a solid hub might offer. This setup is well-suited for street use where occasional spirited driving or track days are part of the plan, providing a strong connection between the engine and the transmission.

When installing a performance clutch kit like this, it's important to ensure all related components are in good condition. This includes checking the flywheel for wear or damage, as a resurfaced or new flywheel is often recommended for optimal clutch performance and longevity. Proper break-in procedures, as outlined by SPEC, should also be followed to ensure the clutch surfaces mate correctly and achieve their full holding capacity.