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BM13-HDG4 - ACT Heavy Duty Race Sprung 4 Pad Clutch Kit
Note: Conversion kit. Includes ACT Prolite flywheel. Must use ACT flywheel (included in kit). Flywheel bolts included (M12-1.5 x 30mm). Pressure plate bolts included (M8-1.25 x 20mm).
$1,834.00
SKU
BM13-HDG4
Specifications
| Item Description | ACT Heavy Duty Race Sprung 4 Pad Clutch Kit |
|---|---|
| Product Weight (lbs.) | 24.7 |
| Torque Capacity (ft/lbs.) | 596 |
| Torque Capacity Over OE | 94% |
| Disc Material | Ceramic |
| Clutch Disc Diameter (Inches) | 9.4 |
| Clutch Disc Diameter (Millimeters) | 240 |
| Input Shaft Diameter (inches) | 1.125 |
| Pressure Plate Type | Heavy Duty |
| Flywheel Type | Prolite |
| Warranty | 12 Months (view details) |
Description
BM13-HDG4 kit features ACT's most popular Heavy Duty pressure plate. ACT Heavy Duty pressure plates use exclusive diaphragm design to increase clamp load, reduce deflection and maximize clutch life. All diaphragms endure a four-stage, heat-treating process for unparalleled performance. ACT pressure plates have precision cover stampings to provide rigidity and consistency. ACT's 4-pad spring-centered race disc features a spring-center to properly damp torsional vibrations for quieter operation and resist failure even under harsh conditions. ACT spring retainers utilize wraparound spring windows and thicker retainer stampings to provide spring support, reduce stress concentrations, and increase strength and reliability. With the 4-pad spring-centered race disc, engagement is harsher, but shifting is faster. ACT's 4-pad spring-centered race disc is well-suited for smaller disc sizes in smaller engines.
| Feel | Light to moderate pedal effort, aggressive engagement, OE to mild gear rattle |
|---|---|
| Life | Moderate friction life, extended by ACT's exclusive diaphragm design |
| Quality | Carefully engineered, precisely assembled, accurately balanced, uses select ceramic friction materials for high heat tolerance and maximum performance |
| Recommended Use | Recommended for high horsepower street or race use |
| ACT Difference | 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability |
Vehicle Fitment
| Application | Engine |
|---|---|
| 1991 BMW 525i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1992 BMW 325i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1992 BMW 325is Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1992 BMW 525i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1993 BMW 525i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1994 BMW 525i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1995 BMW 525i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1996 BMW 318i Base | 1.9 L4 GAS FI 1895cc |
| 1996 BMW 318is Base | 1.9 L4 GAS FI 1895cc |
| 1996 BMW 318ti Base | 1.9 L4 GAS FI 1895cc |
| 1996 BMW 328i Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1996 BMW 328is Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1996 BMW M3 Base | 3.2 L6 GAS FI 3152cc |
| 1996 BMW Z3 Base | 1.9 L4 GAS FI 1895cc | DOHC |
| 1996 BMW Z3 Roadster | 1.9 L4 GAS FI 1895cc | DOHC |
| 1997 BMW 318i Base | 1.9 L4 GAS FI 1895cc |
| 1997 BMW 318is Base | 1.9 L4 GAS FI 1895cc |
| 1997 BMW 318ti Base | 1.9 L4 GAS FI 1895cc |
| 1997 BMW 328i Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1997 BMW 328is Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1997 BMW 528i Base | 2.8 L6 GAS FI 2793cc |
| 1997 BMW M3 Base | 3.2 L6 GAS FI 3152cc |
| 1997 BMW Z3 2.8i | 2.8 L6 GAS FI 2793cc |
| 1997 BMW Z3 Base | 1.9 L4 GAS FI 1895cc | DOHC |
| 1997 BMW Z3 Roadster | 2.8 L6 GAS FI 2793cc |
| 1997 BMW Z3 Roadster | 1.9 L4 GAS FI 1895cc | DOHC |
| 1998 BMW 318i Base | 1.9 L4 GAS FI 1895cc |
| 1998 BMW 318is Base | 1.9 L4 GAS FI 1895cc |
| 1998 BMW 318ti Base | 1.9 L4 GAS FI 1895cc |
| 1998 BMW 323i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1998 BMW 323is Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1998 BMW 328i Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1998 BMW 328is Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1998 BMW 528i Base | 2.8 L6 GAS FI 2793cc |
| 1998 BMW M3 Base | 3.2 L6 GAS FI 3152cc |
| 1998 BMW Z3 1.9i | 1.9 L4 GAS FI 1895cc | DOHC |
| 1998 BMW Z3 2.8i | 2.8 L6 GAS FI 2793cc |
| 1998 BMW Z3 M Roadster | 3.2 L6 GAS FI 3152cc |
| 1998 BMW Z3 Roadster | 1.9 L4 GAS FI 1895cc | DOHC |
| 1998 BMW Z3 Roadster | 2.8 L6 GAS FI 2793cc |
| 1999 BMW 318i Base | 1.9 L4 GAS FI 1895cc |
| 1999 BMW 318is Base | 1.9 L4 GAS FI 1895cc |
| 1999 BMW 318ti Base | 1.9 L4 GAS FI 1895cc |
| 1999 BMW 323i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1999 BMW 323i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1999 BMW 323is Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 1999 BMW 328i Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1999 BMW 328i Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1999 BMW 328is Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 1999 BMW 528i Base | 2.8 L6 GAS FI 2793cc |
| 1999 BMW M3 Base | 3.2 L6 GAS FI 3152cc |
| 1999 BMW Z3 1.9i | 1.9 L4 GAS FI 1895cc | DOHC |
| 1999 BMW Z3 2.8i | 2.8 L6 GAS FI 2793cc |
| 1999 BMW Z3 Coupe | 2.8 L6 GAS FI 2793cc |
| 1999 BMW Z3 M Coupe | 3.2 L6 GAS FI 3152cc |
| 1999 BMW Z3 M Roadster | 3.2 L6 GAS FI 3152cc |
| 1999 BMW Z3 Roadster | 2.5 L6 GAS FI 2494cc | DOHC |
| 1999 BMW Z3 Roadster | 2.8 L6 GAS FI 2793cc |
| 2000 BMW 323Ci Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2000 BMW 323i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2000 BMW 328Ci Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 2000 BMW 328i Base | 2.8 L6 GAS FI 2793cc | DOHC |
| 2000 BMW 528i Base | 2.8 L6 GAS FI 2793cc |
| 2000 BMW Z3 2.8i | 2.8 L6 GAS FI 2793cc |
| 2000 BMW Z3 Coupe | 2.8 L6 GAS FI 2793cc |
| 2000 BMW Z3 M Coupe | 3.2 L6 GAS FI 3152cc |
| 2000 BMW Z3 M Roadster | 3.2 L6 GAS FI 3152cc |
| 2000 BMW Z3 Roadster | 2.5 L6 GAS FI 2494cc | DOHC |
| 2000 BMW Z3 Roadster | 2.8 L6 GAS FI 2793cc |
| 2001 BMW 325Ci Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2001 BMW 325i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2001 BMW 325xi Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2001 BMW 330Ci Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2001 BMW 330i Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2001 BMW 330xi Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2001 BMW 525i Base | 2.5 L6 GAS FI 2494cc |
| 2001 BMW 530i Base | 3.0 L6 GAS FI 2979cc |
| 2001 BMW Z3 3.0i | 3.0 L6 GAS FI 2979cc |
| 2001 BMW Z3 Coupe | 3.0 L6 GAS FI 2979cc |
| 2001 BMW Z3 M Coupe | 3.2 L6 GAS FI 3246cc |
| 2001 BMW Z3 M Roadster | 3.2 L6 GAS FI 3246cc |
| 2001 BMW Z3 Roadster | 2.5 L6 GAS FI 2494cc | DOHC |
| 2001 BMW Z3 Roadster | 3.0 L6 GAS FI 2979cc |
| 2002 BMW 325Ci Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2002 BMW 325i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2002 BMW 325xi Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2002 BMW 330Ci Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2002 BMW 330i Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2002 BMW 330xi Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2002 BMW 525i Base | 2.5 L6 GAS FI 2494cc |
| 2002 BMW 530i Base | 3.0 L6 GAS FI 2979cc |
| 2002 BMW Z3 3.0i | 3.0 L6 GAS FI 2979cc |
| 2002 BMW Z3 Coupe | 3.0 L6 GAS FI 2979cc |
| 2002 BMW Z3 M Coupe | 3.2 L6 GAS FI 3246cc |
| 2002 BMW Z3 M Roadster | 3.2 L6 GAS FI 3246cc |
| 2002 BMW Z3 Roadster | 2.5 L6 GAS FI 2494cc | DOHC |
| 2002 BMW Z3 Roadster | 3.0 L6 GAS FI 2979cc |
| 2003 BMW 325Ci Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2003 BMW 325Ci Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2003 BMW 325i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2003 BMW 325i Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2003 BMW 325xi Base | 2.5 L6 GAS FI 2494cc | DOHC |
| 2003 BMW 330Ci Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2003 BMW 330i Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2003 BMW 330xi Base | 3.0 L6 GAS FI 2979cc | DOHC |
| 2003 BMW 525i Base | 2.5 L6 GAS FI 2494cc |
| 2003 BMW 530i Base | 3.0 L6 GAS FI 2979cc |
| 1996 BMW 318is E36 [Euro] | 1.9L I4 FI| NA |
| 1997 BMW 318is E36 [Euro] | 1.9L I4 FI| NA |
| 1998 BMW 318is E36 [Euro] | 1.9L I4 FI| NA |
| 1999 BMW 318is E36 [Euro] | 1.9L I4 FI| NA |
| 1996 BMW 318ti E36/5 [Euro] | 1.9L I4 FI| NA |
| 1997 BMW 318ti E36/5 [Euro] | 1.9L I4 FI| NA |
| 1998 BMW 318ti E36/5 [Euro] | 1.9L I4 FI| NA |
| 1999 BMW 318ti E36/5 [Euro] | 1.9L I4 FI| NA |
| 2000 BMW 318ti E36/5 [Euro] | 1.9L I4 FI| NA |
| 1991 BMW 525I E34 [Euro] | 2.5L I6 FI| NA |
| 1992 BMW 525I E34 [Euro] | 2.5L I6 FI| NA |
| 1993 BMW 525I E34 [Euro] | 2.5L I6 FI| NA |
| 1994 BMW 525I E34 [Euro] | 2.5L I6 FI| NA |
| 1995 BMW 525I E34 [Euro] | 2.5L I6 FI| NA |
| 2001 BMW 525i E39 [Euro] | 2.5L I6 FI| NA |
| 2001 BMW 525i E39 [Euro] | 2.5L I6 FI| NA |
| 2002 BMW 525i E39 [Euro] | 2.5L I6 FI| NA |
| 2003 BMW 525i E39 [Euro] | 2.5L I6 FI| NA |
| 1995 BMW 528i E39 [Euro] | 2.8L I6 FI| NA |
| 1996 BMW 528i E39 [Euro] | 2.8L I6 FI| NA |
| 1997 BMW 528i E39 [Euro] | 2.8L I6 FI| NA |
| 1998 BMW 528i E39 [Euro] | 2.8L I6 FI| NA |
| 1999 BMW 528i E39 [Euro] | 2.8L I6 FI| NA |
| 2000 BMW 528i E39 [Euro] | 2.8L I6 FI| NA |
| 2001 BMW 530I E39 [Euro] | 3.0L I6 FI| NA |
| 2002 BMW 530I E39 [Euro] | 3.0L I6 FI| NA |
| 2003 BMW 530I E39 [Euro] | 3.0L I6 FI| NA |
| 1995 BMW Z3 E36/7 [Euro] | 1.8L I4 FI| NA |
| 1996 BMW Z3 E36/7 [Euro] | 1.8L I4 FI| NA |
| 1997 BMW Z3 E36/7 [Euro] | 1.8L I4 FI| NA |
| 1998 BMW Z3 E36/7 [Euro] | 1.8L I4 FI| NA |
| 1996 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
| 1997 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
| 1998 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
| 1999 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
| 2000 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
| 2001 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
| 2002 BMW Z3 E36/7 [Euro] | 1.9L I4 FI| NA |
Kit Contents:
Frequently Asked Questions
- Are ACT clutches balanced?
- Yes! All ACT clutch assemblies are computer spin balanced to within .25 oz-in to guarantee help smooth operation across the entire RPM range. For comparison, stock production clutches are typically balanced to within .50 oz-in. Lower is definitely better!
- Will an ACT clutch increase pedal effort?
- ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design, expect an increase in pedal effort between 15-40% (Heavy Duty) and 50-80% (Xtreme), depending on the application. Clutches developed with less pedal effort often result in a lack of longevity, torque capacity and/or engagement quality.
- Do ACT clutches require a break in period?
- For organic street discs, we recommend breaking in the clutch for 300-500 miles with mild engagement, such as stop-and-go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break in period, as this can result in friction surfaces fusing together, hot spots, and friction surface glazing.
- Are ACT clutches repairable or rebuildable?
- In some situations, rebuilds or repairs may be possible (see warranty), after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications, we do not recommend servicing by a general clutch rebuilder.
- How much does an ACT clutch weigh?
- The weight of the ACT clutch assembly will usually be the same as a stock OEM clutch assembly.
PROP 65 WARNING
This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. for more information, visit www.P65Warnings.ca.gov