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  See more parts for Acura RSX
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ACT HD/Race Rigid 4 Pad Kit Acura RSX | TSX | Honda Civic 2002-2011 - AR1-HDR4

If you're looking to take your clutch game to the next level, the ACT HD/Race Rigid 4 Pad Kit (AR1-HDR4) is where you want to be. This isn’t just any clutch kit; it’s packed with features that serious drivers will appreciate. The heavy-duty pressure plate is the standout here, designed with a unique diaphragm that cranks up the clamp load while keeping deflection in check. What does that mean for you? Longer clutch life and better performance when you really put the pedal down.

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 pushing your engine hard. The precision cover stampings ensure that the pressure plate is rigid and consistent, which is crucial for those high RPM runs. And those 4-pad rigid race discs? They’re made from top-notch ceramic friction materials, which means they can take the heat without breaking a sweat.

What you get with this setup is a lightweight, rigid design that allows for quicker shifts. Sure, the engagement is a bit harsher, but that’s just part of the race vibe—faster shifts mean you’re not wasting any time when you need to change gears. This kit is particularly suited for smaller disc sizes, making it perfect for those smaller engines that need a bit more bite.

Install Instructions:

Features:

  • Light to moderate pedal effort, with aggressive engagement and some increased gear rattle—just how we like it.
  • Moderate friction life, which is extended thanks to ACT's exclusive diaphragm design, though the rigid setup might wear the spline a bit faster.
  • Engineered for precision, this kit is balanced perfectly and uses select ceramic materials that can handle high heat for maximum performance.
  • Best suited for race use only—this isn’t your daily driver clutch.
  • Every kit is 100% clamp load tested and dynamically balanced for reliability at high RPMs.

Specifications:

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Flywheel Included: No
  • Pilot Bushing Included: Yes
  • Pressure Plate Type: Heavy Duty
  • Release Bearing Included: Yes
  • Clutch Disc Diameter: 8.4 in (214 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 24
  • Input Shaft Diameter: 1.03125 in
  • Alignment Tool Included: Yes
  • Disc Type Sprung Solid: Solid
  • Pressure Plate Bolts Included: No
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: No
  • Product Weight: 9.9 lbs
  • Torque Capacity: 330 ft/lbs (0.73 over OE)

Products Fitment:

  • Acura RSX 2002-2006
  • Acura TSX 2004-2008
  • Honda Civic 2002-2011

Other Part Numbers:
ACT #actAR1-HDR4

Proposition 65

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

Vehicle
2002-2006
 Acura RSX
2004-2008
 Acura TSX
2002-2011
 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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