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Mazda ACT HDR4 - Heavy Duty with 4 Puck Disc Clutch Kits Zoom ACT

Mazda ACT HDR4 - Heavy Duty with 4 Puck Disc Clutch Kits

The ACT HDR4 Clutch Kit is for those seeking a Pressure Plate that won't cause your left leg to grow to 2x the size of your right and a disc that is fully capable of grabbing your flywheel with ease.

Calculated results are given for each clutch by publishing the increase in clamp load and estimated torque capacity in ACT's catalog and on their website. These are not mere marketing claims, but accurate estimates based from solid engineering principles, confirming what ACT already knows from the track. Each pressure plate is load tested and cycled to ensure parts meet ACT's strict quality standards.

    Heavy Duty - HD Disc Features
  • Clamps load increase of 20% to 50%
  • Pedal feels stock to moderate
  • Many SFI Certified to insure safety
  • Recommended disc: Street or Race


  • Solid Hub (4 Pad) Disc Features:
  • Recommended for Drag and Road Racing
  • Increased torque capacity
  • Fastest shifts, low inertia
  • Good durability but shortened spline life
  • Harsh engagement, chatter


All Mazda ACT HDR4 - Heavy Duty with 4 Puck Disc Clutch Kits
View All Mazda 323 Clutch Kits
Mazda 323MSRPPrice
(1981-Jun 1987) 1.5L/1.6L, 255 ft.lbs, 52% Pedal Increase$424.96$361.22  Add to Cart
(1987-1989) Non Turbo 2WD, 255 ft.lbs, 52% Pedal Increase$431.26$366.57  Add to Cart
Turbo 2/4WD, 365 Ft.Lbs, 35% Pedal Increase$441.51$375.28  Add to Cart
(1990-1994) 255 ft.lbs, 52% Pedal Increase$422.86$359.43  Add to Cart
View All Mazda 929 Clutch Kits
Mazda 929MSRPPrice
(1988-1991) 3.0L, 422 ft.lbs, 34% Pedal Increase$466.57$396.58  Add to Cart
View All Mazda Miata Clutch Kits
Mazda MiataMSRPPrice
(1989-1993) 1.6 256lbs. 45% Pedal Increase$467.63$397.49  Add to Cart
1.6 Upgrade 298 lbs. 45% Pedal Increase$505.20$429.42  Add to Cart
(1994-2002) 1.8L, 298 ft.lbs, 33% Pedal Increase$505.20$429.42  Add to Cart
View All Mazda MX-3 Clutch Kits
Mazda MX-3MSRPPrice
(1992-1995) 1.8,365 ft.lbs, 35% Pedal Increase$441.51$375.28  Add to Cart
(1994-1995) 1.6L, 257 ft.lbs, 48% Pedal Increase$487.99$414.79  Add to Cart
1.8L, 365 ft.lbs, 35% Pedal Increase$422.48$359.11  Add to Cart
View All Mazda MX-6 Clutch Kits
Mazda MX-6MSRPPrice
(1983-1987) 2.0L, 365 ft.lbs, 35% Pedal Increase$441.51$375.28  Add to Cart
(1986-1987) Turbo, 365 ft.lbs, 35% Pedal Increase$441.51$375.28  Add to Cart
(1988-1992) 2.2L Non Turbo, 365 ft.lbs, 35% Pedal Increase$422.48$359.11  Add to Cart
2.2L Turbo, 422 ft.lbs, 34% Pedal Increase$466.57$396.58  Add to Cart
(1993-2002) 2.0L, 343 ft.lbs, 34% Pedal Increase$508.48$432.21  Add to Cart
2.5L Non Turbo, 365 ft.lbs, 35% Pedal Increase$441.51$375.28  Add to Cart
View All Mazda Pickup Clutch Kits
Mazda PickupMSRPPrice
(Mar 1985-May 1987) 2.4L 22RE, 355 ft.lbs, 35% Pedal Increase$481.19$409.01  Add to Cart
(Jun 1987-Aug 1988) 2.4L Turbo, 355 ft.lbs, 35% Pedal Increase$494.20$420.07  Add to Cart
(Aug 1978-1988) Exc Turbo, 335 ft.lbs, 39% Pedal Increase$402.31$341.96  Add to Cart
(Aug 1988-1993) 2.4L 22RE, 335 ft.lbs, 39% Pedal Increase$415.32$353.02  Add to Cart
(Aug 1993-1995) 2.4L 22RE 2WD, 335 ft.lbs, 35% Pedal Increase$415.32$353.02  Add to Cart
(Sep 1974-1983) 2.0L/2.2L, 342 ft.lbs, 50% Pedal Increase$490.22$416.69  Add to Cart
(Sep 1986-1990) 2.4L Z24L, 342 ft.lbs, 50% Pedal Increase$490.22$416.69  Add to Cart
(Nov 1971-Jul 1978) 2.0L 18RC 2WD, 335 ft.lbs, 39% Pedal Increase$405.24$344.45  Add to Cart
(Dec 1969-Nov 1970) 1.9L 8RC, 335 ft.lbs, 39% Pedal Increase$402.44$342.07  Add to Cart
(Dec 1969-Oct 1970) 2.0L 18R 2WD, 335 ft.lbs, 39% Pedal Increase$402.44$342.07  Add to Cart
(1972-Jul 1978) 2.2L 20R 2WD, 335 ft.lbs, 39% Pedal Increase$405.24$344.45  Add to Cart
(1983-1989) 2.0L, 308 ft.lbs, 45% Pedal Increase$438.32$372.57  Add to Cart
(1986-1993) 2.0L/2.2L, 365 ft.lbs, 35% Pedal Increase$441.51$375.28  Add to Cart
(1987-1989) 2.6L Carbureted Only, 422 ft.lbs, 34% Pedal Increase$467.39$397.28  Add to Cart
(1993-1996) 2.4L 22RE 4WD, 355 ft.lbs, 35% Pedal Increase$494.20$420.07  Add to Cart
View All Mazda Protege Clutch Kits
Mazda ProtegeMSRPPrice
(1990-1995) 1.8L 2/4WD DOHC, 257 ft.lbs, 48% Pedal Increase$491.62$417.88  Add to Cart
1.8L 2WD DOHC, 278 ft.lbs, 40% Pedal Increase$491.62$417.88  Add to Cart
(1990-1994) 1.8L 2WD SOHC, 257 ft.lbs, 48% Pedal Increase$487.99$414.79  Add to Cart
(1995-1997) 1.5L, 257 ft.lbs, 48% Pedal Increase$487.99$414.79  Add to Cart
(1996-2000) 1.6L/1.8L, 257 ft.lbs, 48% Pedal Increase$487.99$414.79  Add to Cart
(2001-2003) 2.0L, 365 ft.lbs, 35% Pedal Increase$508.48$432.21  Add to Cart
View All Mazda RX-7 Clutch Kits
Mazda RX-7MSRPPrice
(1986-1992) Non-Turbo, 343 ft.lbs, 34% Pedal Increase$485.11$412.34  Add to Cart
Turbo, 422 ft.lbs, 34% Pedal Increase$474.95$403.71  Add to Cart
View All Mazda RX-8 Clutch Kits
Mazda RX-8MSRPPrice
(2003-2006) 240mm - 422lb/ft Capacity - 34% Clamp Load Increase$498.83$424.01  Add to Cart
 
This product also fits other vehicles.

All ACT HDR4 - Heavy Duty with 4 Puck Disc Clutch Kits
 
 
ACT HDR4 - Heavy Duty with 4 Puck Disc Clutch Kit Reviews
  (9.3 of 10) 3 Reviews    Write Review
RatingDateModelReview
1012/28/2009Civicthis was a great clutch kit, was used with 7lb zoom flywheel and it reved up so much quicker. this was in a stock 98 civic hatch and it would spin them in 3rd. great clutch and a great price!
1008/04/2007MR2Works great! Pretty agressive grab, Still streetable, lot's of chatter. VERY stong holding power.
807/30/2004Cavalier

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Parts Available: Z31-HDR4, Z32-HDR4, Z62-HDR4, Z33-HDR4, Z64-HDR4, ZM1-HDR4, ZM2-HDR4, ZM2-HDR4, Z62-HDR4, ZP1-HDR4, Z61-HDR4, Z62-HDR4, Z62-HDR4, Z61-HDR4, Z64-HDr4, Z66-HDR4, Z62-HDR4, TS1-HDR4, T43-HDR4, TC5-HDR4, T42-HDR4, T42-HDR4, NX1-HDR4, NX1-HDR4, TC3-HDR4, T41-HDR4, T41-HDR4, TC3-HDR4, MB3-HDR4, Z62-HDR4, ZT2-HDR4, T43-HDR4, ZP2-HDR4, ZP2-HDR4, ZP1-HDR4, ZP1-HDR4, ZP1-HDR4, Z66-HDR4, ZX2-HDR4, Z65-HDR4, ZM8-HDR4