If you’re looking to kick your BMW’s performance up a notch, the ACT HD/Race Rigid 4 Pad Kit (BM17-HDR4) is where it’s at. This isn’t just another clutch kit; it’s built for those who want to feel every gear shift and maximize their ride’s potential. The Heavy Duty pressure plate is the star of the show here, featuring an exclusive diaphragm design that ramps up clamp load while minimizing deflection. That means you get a clutch that lasts longer and performs better, especially when you’re pushing the limits.

Now, let’s talk about the nitty-gritty. Each diaphragm goes through a four-stage heat-treating process, so you know it can handle the heat when you're racing or just driving hard on the weekends. The precision cover stampings ensure that rigidity and consistency are spot on, which is crucial for reliable performance. The 4-pad rigid race discs are made from high-quality ceramic materials that can take the heat and provide solid friction. Plus, the chrome-moly hub is heat-treated for added strength, so you won’t have to worry about it giving up on you.

What does this mean for you? Well, the lightweight and rigid design means quicker shifts and smoother service. Just keep in mind, the engagement is a bit harsher with this setup, but that’s the trade-off for faster shifts. It’s a perfect match for smaller disc sizes in smaller engines, and it’s definitely not for the faint of heart. If you’re serious about racing, this kit is recommended for that use only.

Installation is straightforward:

• For detailed instructions, CLICK HERE

Here’s what you can expect:

• Light to moderate pedal effort, with aggressive engagement and a bit of extra gear rattle.
• Moderate friction life, but you’ll get extended life thanks to that special diaphragm design—though be aware that the rigid setup might increase spline wear.
• Carefully engineered and precisely assembled, balanced to handle high RPMs without a hitch.
• 100% clamp load tested to ensure you’re getting reliable performance when it counts.

Specifications that matter:

• Clutch Disc Diameter: 9.4 in (240 mm)
• Input Spline Quantity: 10
• Input Shaft Diameter: 1.125 in
• Torque Capacity: 596 ft/lbs
• Product Weight: 13.3 lbs

Note: This is a conversion kit that must be paired with the ACT 601011 or 601016 flywheel (not included). Pressure plate bolts are included (M8-1.25 x 20mm).

Fits these BMW models:

• BMW 318i 1996-1999
• BMW 318is 1996-1999
• BMW 318ti 1996-1999
• BMW 323Ci 2000
• BMW 323i 1998-2000
• BMW 323is 1998-1999
• BMW 325Ci 2001-2003
• BMW 325i 1992 & 2001-2003
• BMW 325is 1992
• BMW 325xi 2001-2003
• BMW 328Ci 2000
• BMW 328i 1996-2000
• BMW 328is 1996-1999
• BMW 330Ci 2001-2003
• BMW 330i 2001-2003
• BMW 330xi 2001-2003
• BMW 525i 1991-1995 & 2001-2003
• BMW 528i 1997-2000
• BMW 530i 2001-2003
• BMW M3 1996-1999
• BMW Z3 1996-2002
• BMW Z3 M 1998-2002