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  See more parts for Honda Civic
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ACT Sport/Race Sprung 4 Pad Kit Honda Civic 1988-1991 - HW4-SPG4

Alright, let’s talk about the ACT Sport/Race Sprung 4 Pad Kit (HW4-SPG4). If you’re looking to kick your Honda Civic from 1988 to 1991 up a notch, this clutch kit is where it’s at. It’s got a sport pressure plate that really amps up the clamp load, thanks to a unique diaphragm design. What does that mean for you? Less deflection and a longer clutch life. Plus, they heat-treat the diaphragms through a four-stage process, which is pretty cool—it gives you performance you can count on.

The pressure plate itself is made with precision cover stampings, so you know it’s built to last and hold up under pressure. The 4-pad spring-centered race disc is where the magic happens. It’s designed to dampen torsional vibrations, which means your ride will be quieter, even when you’re pushing it hard. And trust me, it can take a beating without failing, so you can really put the pedal to the metal.

Now, let’s get into the nitty-gritty. This setup does have a harsher engagement, but that’s what makes shifting faster and more responsive. It’s perfect for those smaller engines that need a little extra oomph. The kit is designed for high horsepower street or race use, so if you’re looking to make some serious power, this is a solid choice.

Install Instructions:

Features:

  • Light to moderate pedal effort with an aggressive engagement that might rattle a bit in gear.
  • Moderate friction life, but ACT’s diaphragm design helps extend it.
  • Made with select ceramic friction materials, this thing can handle high heat and still perform.
  • 100% clamp load tested and dynamically balanced for reliability at high RPMs.

Specifications:

  • Clutch Master Cylinder Included: No
  • Grease Included: Yes
  • Grade Type: Performance
  • Pilot Bushing Included: No
  • Pressure Plate Type: Sport
  • Release Bearing Included: Yes
  • Clutch Disc Diameter: 8.3 in (212 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 20
  • Input Shaft Diameter: 0.875 in
  • Alignment Tool Included: Yes
  • Disc Type Sprung Solid: Sprung
  • Pressure Plate Bolts Included: No
  • Clutch Slave Cylinder Included: No
  • Flywheel Bolts Included: No
  • Pilot Bearing Included: Yes
  • Product Weight: 10.5 lbs
  • Torque Capacity: 250 ft/lbs
  • Torque Capacity Over OE: 0.64

Notes:

  • Make sure to use this with a 90-01 SOHC flywheel for the best results.

So, if you’re ready to take your Civic to the next level, this clutch kit is a solid upgrade. It’s built for performance and reliability, and it’ll definitely give you that edge you’re looking for.

Other Part Numbers:
ACT #actHW4-SPG4

Proposition 65

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

Vehicle Make/Model
Honda Civic 1988-1989 Wagovan
Honda Civic 1988-1991 RT 4WD
Honda Civic 1988-1991 DX
Honda Civic 1988 SE
Honda Civic 1988-1991 LX
Honda Civic 1988-1991 Base
Honda Civic 1989-1991 Si
Honda Civic 1989-1991 CX
Honda Civic 1990-1991 EX

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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