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Heavy Duty Street Sprung Clutch Built for the N52 Six Cylinder
The ACT BM15-HDSS pairs a Heavy Duty pressure plate with a Performance Street Sprung disc to give the BMW N52 platform stronger clamp load and better pedal feel than the factory clutch while still staying streetable for daily driving.
Key Features
- Heavy Duty pressure plate increases clamp load up to 60 percent over stock for reduced slippage
- Performance Street Sprung disc uses a sprung hub and organic friction material for smooth engagement
- Kevlar lined friction material resists heat and wear far better than a stock disc
- Balanced and dyno tested assembly for smooth, consistent engagement at the pedal
- Direct bolt in fit using the factory pressure plate bolt pattern, no drilling required
Fitment
| Year Range | Make | Model | Trim |
|---|---|---|---|
| 2006 | BMW | 325i | |
| 2006 | BMW | 325xi | |
| 2006 | BMW | 330i | |
| 2006 | BMW | 330xi | |
| 2006 | BMW | 525i | |
| 2006 | BMW | 525xi | |
| 2006 | BMW | 530i | |
| 2006 | BMW | 530xi | |
| 2006 | BMW | Z4 | 3.0i |
Specifications
| Detail | Value |
|---|---|
| Part Number | BM15-HDSS |
| Brand | ACT |
| Type | Heavy Duty Performance Street Sprung Clutch Kit |
| Pressure Plate | Heavy Duty, up to 60 percent more clamp load than stock |
| Disc Type | Performance Street Sprung, organic Kevlar lined facing |
| Engine Platform | BMW N52 3.0L inline six |
| Includes Release Bearing | Yes |
| UPC | Not published by manufacturer |
What's Included
- 1x BM15-HDSS Heavy Duty pressure plate
- 1x Performance Street Sprung clutch disc
- 1x release bearing
- Installation hardware
About ACT
Advanced Clutch Technology (ACT) has engineered performance clutch systems in the United States since 1988. Every ACT kit is designed, tested, and assembled in house, pairing heat resistant friction materials with precision balanced pressure plates for reliable street and track performance.
Frequently Asked Questions
What is the BM15-HDSS?The BM15-HDSS is an ACT Heavy Duty Performance Street Sprung clutch kit built for the BMW N52 3.0L inline six platform, including a Heavy Duty pressure plate, sprung Kevlar lined disc, and release bearing.
Is the BM15-HDSS streetable for daily driving?Yes, the sprung hub disc design smooths out engagement so the kit remains comfortable for daily street use while still handling increased power.
Does this kit fit other BMW models beyond the 2006 325i?Per the manufacturer, this kit code also fits additional N52 powered BMW models including the 328i, 328xi, 128i, X3, and Z4 3.0si across several model years, though the 2006 325i platform above is the primary confirmed fitment.
Install Instructions
- Support the transmission and remove the driveshaft, exhaust, and any components blocking transmission removal
- Separate the transmission from the engine and remove the factory clutch and pressure plate
- Inspect and resurface or replace the flywheel as needed before installing the new clutch
- Install the BM15-HDSS disc using an alignment tool, then bolt up the pressure plate to factory torque specification
- Install the release bearing, reinstall the transmission, and reconnect all components removed
ACT
ACT (Advanced Clutch Technology) is a trusted leader in high-performance clutch and drivetrain solutions, engineered for enthusiasts, racers, and high-torque performance builds. At Black Ops Auto Works, our ACT collection features a wide range of ACT performance clutch kits, pressure plates, clutch discs, flywheels, pilot bearings, and alignment tools designed to handle aggressive driving, increased horsepower, and track-level abuse. Manufactured in the USA and proven in motorsports worldwide, ACT products deliver consistent clutch engagement, superior heat resistance, and long-term reliability. Whether you’re upgrading a street-driven vehicle or building a race-ready setup, ACT clutches provide the strength and precision needed to put power to the ground. Our ACT lineup supports many popular import and domestic platforms, including Subaru, Mitsubishi, Scion FR-S / Subaru BRZ, BMW, Ford, Audi, Volkswagen, Jeep, and Hyundai. From HD Performance Street clutches to XT and race-sprung c...
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