ACT Heavy Duty Performance Street Sprung Clutch Kit

Part #: BM14-HDSS

Overview

The ACT Heavy Duty Performance Street Sprung Clutch Kit is designed to enhance the durability and performance of your BMW's clutch system. Crafted for enthusiasts seeking a reliable upgrade, this kit combines ACT’s most popular heavy-duty pressure plate with a high-quality street disc, providing a balanced blend of strength and drivability. Whether you're daily driving or pushing your vehicle on spirited drives, this clutch kit offers improved response, increased clamp load, and longer lifespan, making it an ideal choice for drivers who demand both performance and longevity from their clutch components. This clutch kit is suitable for BMW 135, 335, 535, 435, and Z4 models from 2007, offering a robust solution for those looking to handle increased power or replace worn-out components with a trusted aftermarket upgrade.

Key Features

Designed with durability and performance in mind, this clutch kit features high-quality materials and engineering to support your driving needs. The components are engineered to provide consistent engagement and reliable operation under demanding conditions. The kit’s pressure plate utilizes an exclusive diaphragm design that enhances clamp load and reduces deflection, ensuring a firm and responsive pedal feel. The street disc is made with premium organic materials, optimized for smooth engagement and long-lasting performance. Precision manufacturing processes, including heat-treating and cover stamping, contribute to the overall rigidity and consistency of the clutch assembly. This setup helps improve power transfer, response, and overall driving feel, making it suitable for spirited street driving and moderate performance upgrades.

Construction & Design

The pressure plate features ACT’s proprietary diaphragm design, which increases clamp load and reduces deflection for improved clutch engagement. All diaphragms undergo a four-stage heat-treating process, ensuring durability and resistance to wear. The clutch disc incorporates premium organic friction materials, designed to provide smooth engagement and reliable performance over time. The components are precisely stamped and assembled to maintain structural integrity and consistent operation.

Driving Feel & Feedback

This clutch kit offers a firm and predictable pedal feel, with improved response compared to stock setups. The increased clamp load and high-quality materials help deliver confident engagement, especially under higher torque conditions. Drivers will notice a more direct connection between the pedal and the drivetrain, enhancing overall driving engagement and control.

Installation & Fitment

Installation should be performed by a qualified technician familiar with BMW clutch systems. Proper alignment and torque specifications are essential for optimal performance and longevity. Fitment details should be verified against your specific vehicle model and year to ensure compatibility.

What’s Included

The kit includes the heavy-duty pressure plate, street disc, release bearing, and necessary hardware for installation. Additional components or tools are not included and may be required for a complete installation.