If you’re looking to beef up your BMW’s clutch setup, the ACT HD/Race Sprung 4 Pad Kit (BM17-HDG4) is a solid choice. This kit packs a punch with ACT's Heavy Duty pressure plate, which is pretty much their go-to for those who want to squeeze out every bit of performance. The diaphragm design here isn’t just for show—it cranks up the clamp load, cuts down on deflection, and helps your clutch last longer, even when you’re pushing it hard. Each diaphragm goes through a four-stage heat-treating process, so you know it’s built to handle the heat.

Now, let’s talk about the 4-pad spring-centered race disc. This bad boy is designed to dampen torsional vibrations, which means quieter operation and less chance of failure when the going gets tough. The spring retainers are no joke either—they’ve got wraparound spring windows and thicker stampings to boost strength and reliability. Sure, engagement might be a bit harsher, but that just means quicker shifts, which is what we’re all after, right? This kit is particularly great for smaller engines that need a bit more bite without going overboard.

Install Instructions:

• For Instructions CLICK HERE

Features:

• Light to moderate pedal effort with a more aggressive engagement—perfect for spirited driving.
• Moderate friction life, thanks to that exclusive diaphragm design that ACT is known for.
• Precision-engineered and balanced, using select ceramic materials that can handle high heat without breaking a sweat.
• Ideal for those high horsepower street or race setups that demand reliability.
• 100% clamp load tested and dynamically balanced to keep things smooth at high RPMs.

Specifications:

• Clutch Master Cylinder Included: No
• Grease Included: Yes
• Grade Type: Performance
• Flywheel Included: No
• Pilot Bushing Included: No
• Pressure Plate Type: Heavy Duty
• Release Bearing Included: Yes
• Clutch Disc Diameter: 9.4 in (240 mm)
• Disc Material: Ceramic
• Input Spline Quantity: 10
• Input Shaft Diameter: 1.125 in
• Alignment Tool Included: Yes
• Disc Type: Sprung Solid
• Pressure Plate Bolts Included: Yes
• Clutch Slave Cylinder Included: No
• Flywheel Bolts Included: No
• Pilot Bearing Included: Yes
• Product Weight: 14.8 lbs
• Torque Capacity: 596 ft/lbs
• Torque Capacity Over OE: 0.94

Notes:

• This is a conversion kit, so you’ll need to pair it with an ACT 601011 or 601016 flywheel (not included).
• Pressure plate bolts are included (M8-1.25 x 20mm).

Fits the Following 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

So, if you’re ready to take your BMW’s performance to the next level, this clutch kit is definitely worth considering. It’s got the specs and the build quality to back it up, and you’ll feel the difference in your shifts right away.