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  See more parts for Honda Civic
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ACT HD/Race Rigid 4 Pad Kit Honda Civic 2006-2015 - HC9-HDR4

The ACT HC9-HDR4 is a high-performance clutch kit designed to elevate your driving experience, especially for those who love the thrill of racing. This kit features ACT's renowned Heavy Duty pressure plate, which utilizes a unique diaphragm design that enhances clamp load while minimizing deflection. This means not only increased clutch life but also a more reliable performance on the track.

One of the standout features of the HC9-HDR4 is its four-stage heat-treating process that each diaphragm undergoes, ensuring that you get unparalleled performance even under extreme conditions. The precision cover stampings add rigidity and consistency, making it a great choice for serious enthusiasts.

The 4-pad rigid race discs are crafted from high-quality ceramic friction materials, providing excellent heat tolerance. They come with a chrome-moly hub that’s heat-treated for enhanced strength and durability. Customers have noted that the lightweight and rigid design of this kit allows for quicker shifts and a smoother overall experience. However, be prepared for a harsher engagement, which many racers appreciate for the faster shifting it delivers.

Customer Feedback: Many users have praised the HC9-HDR4 for its performance on the track, stating that it offers a noticeable improvement in responsiveness. One customer mentioned, "The engagement is definitely aggressive, but once you get used to it, the quick shifts are a game changer!"

Install Instructions:

  • For detailed installation instructions, CLICK HERE

Features:

  • Light to moderate pedal effort with aggressive engagement and increased gear rattle.
  • Moderate friction life, extended by ACT's exclusive diaphragm design; note that the rigid design may increase spline wear.
  • Carefully engineered and precisely assembled for maximum performance.
  • Recommended for race use only.
  • 100% clamp load tested and dynamically computer balanced for smooth high RPM reliability.

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: 8.4 in (214 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 20
  • Input Shaft Diameter: 0.875 in
  • Alignment Tool Included: No
  • Disc Type: Solid
  • Pressure Plate Bolts Included: No
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: No
  • Product Weight: 9.7 lbs
  • Torque Capacity: 305 ft/lbs
  • Torque Capacity Over OE: 0.71

Fitment: This clutch kit is compatible with the Honda Civic from 2006 to 2015.

Other Part Numbers:
ACT #actHC9-HDR4

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

Vehicle
2006-2015
 Honda Civic

ACT Banner

ACT ? Advanced Clutch Technology | Clutch Kits & Flywheels Built to Handle Real Power

If you've added boost, tuned for more power, or simply want better throttle control, then your stock clutch won't cut it. That?s where ACT (Advanced Clutch Technology) comes in delivering high-performance clutch kits and flywheels designed for real drivers who push their builds on the street, strip, or track.

ACT?s lineup includes everything from daily driver friendly HD kits to hardcore twin disc setups for serious horsepower. Whether you?re launching hard in a WRX, drifting in a 370Z, or canyon carving in an M3, ACT gives you the torque capacity and engagement you need without sacrificing drivability.

Why ACT? Because Power Without Control Is Useless.
  • Hold More Power Engineered to handle turbo, supercharger, and high-compression builds
  • Faster Engagement Stronger pressure plates for better bite off the line
  • Better Pedal Feel Balanced response without going full race-car stiff
  • Reduced Rotational Mass Lightweight flywheels improve rev-matching and response
  • No Guesswork Direct-fit applications, no fabbing, no hassle
ACT Clutch Kits and Flywheels Fit the Cars Enthusiasts Build

ACT doesn?t just make universal performance parts ? they build complete, vehicle-specific clutch solutions for enthusiast favorites. Whether you daily a Civic Type R, track a Subaru STI, drift a 240SX, or drag a Mustang GT, ACT offers the right clutch to match your build goals.

Top supported platforms include the Nissan 350Z/370Z, Toyota Supra A90, Chevy Camaro SS/ZL1, Mitsubishi Evo, Ford Focus RS/ST, and BMW M3/M4 ? each with clutch options tuned to your driving needs.

What ACT Offers:
  • Performance Clutch Kits From HD street kits to twin-disc race systems
  • Clutch Discs 6-puck, full-face, rigid or sprung to match your style
  • Pressure Plates Heavy-duty options that increase clamp load without sacrificing control
  • Chromoly Lightweight Flywheels Quicker revs, smoother shifts, and less drivetrain stress
  • Complete Hardware Kits Everything you need for a proper install
Performance Tested. Driver Approved.

ACT isn?t hype ? it?s proven. Their clutches are SFI-certified, track-tested, and used by racers in drag, time attack, autocross, drift, and rally. But what really matters? They hold power, last longer, and feel right even after hundreds of hard launches or hours of canyon carving.

Whether you're upgrading for more power or replacing a tired OEM clutch, ACT gives you the bite, strength, and feel to drive harder with confidence. No compromises, no excuses just parts that work when it matters.

ACT warrants all products to be free of defects in materials and workmanship for normal use and service for a period of one (1) year from retail purchase. Written notice must be immediately given to ACT within the warranty period. We require a copy of the purchase receipt showing the unit was purchased from an Authorized Dealer or Advanced Clutch Technology directly to verify the product is under warranty. Products purchased used do not carry a warranty. This warranty is to the original purchaser and is non-transferable. All non-warranty items are subject to a $50 inspection bench test fee.

ACT reserves the right to examine any part returned for warranty claim to determine, to ACT's satisfaction, whether the material or workmanship of the part does not conform to this limited warranty. ACT's obligation under this warranty shall be limited to repairing, replacing, or crediting, at its option, any part which is deemed covered by ACT. No labor, lift or storage charges will be reimbursed for any reason. Damage to ACT's parts resulting from misuse, improper use, or abuse shall void this limited warranty. Failure to follow ACT's installation instructions and the vehicle manufacturers installation procedures and specifications shall void this limited warranty.

ACT undertakes no responsibility for the quality of the goods except as otherwise provided in this contract. ACT assumes no responsibility that the goods will be fit for any particular purpose for which you may be buying these goods, except as otherwise provided in the contract. ACT shall not be liable for any damage or injury to persons or property resulting from improper installation or misuse of any part subject to this warranty.

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