See more parts for Subaru Baja
Select the year of your Subaru Baja:
Product thumb
ACT HD/Race Rigid 4 Pad Subaru Legacy | Outback | Forester | Baja | WRX 2005-2024
$1180.00
Free Shipping

If you're looking to take your Subaru's performance to the next level, the Advanced Clutch HD/Race Rigid 4 Pad SB11-HDR4 kit is worth your attention. This isn't just another clutch kit; it's built for those who want serious power and reliability on the track or the street. The heart of this kit is ACT's Heavy Duty pressure plate, which is designed with a unique diaphragm that ramps up the clamp load while minimizing deflection. This means you get a clutch that not only lasts longer but also handles the heat better, thanks to a four-stage heat-treating process that ensures top-notch performance.

Now, let’s talk about the 4-pad rigid race discs. Made from high-quality ceramic friction materials, these discs are tough as nails. The chrome-moly hub is heat-treated, so you know it can take a beating. The lightweight design means you can shift quicker—ideal for those moments when you need to get into gear fast. Sure, the engagement is a bit harsher, but that’s the trade-off for quicker shifts. If you're running a smaller engine, this setup is particularly well-suited for you.

Installation is straightforward:

What to expect:

  • Pedal effort is light to moderate, but don’t be surprised by the aggressive engagement and increased gear rattle.
  • While the friction life is moderate, ACT's diaphragm design helps extend it a bit, though keep in mind that the rigid setup might increase spline wear.
  • Each component is engineered, assembled, and balanced with precision, using select ceramic materials that can handle high heat and deliver maximum performance.
  • This kit is recommended for race use only, so if you're hitting the track, you're in good hands.
  • Every unit is 100% clamp load tested and dynamically balanced for smooth operation at high RPMs.

Here are the nitty-gritty specs:

  • Clutch Master Cylinder: Not included
  • Grease: Yes, included
  • Grade Type: Performance
  • Flywheel: Yes, included
  • Pressure Plate Type: Heavy Duty
  • Release Bearing: Yes, included
  • Clutch Disc Diameter: 9.4 in (240 mm)
  • Disc Material: Ceramic
  • Input Spline Quantity: 24
  • Input Shaft Diameter: 1 in
  • Alignment Tool: Yes, included
  • Disc Type: Solid
  • Pressure Plate Bolts: Yes, included
  • Clutch Slave Cylinder: Not included
  • Flywheel Bolts: Not included
  • Flywheel Type: Streetlite
  • Weight: 27.1 lbs
  • Torque Capacity: 574 ft/lbs
  • Torque Capacity Over OE: 0.78

Important notes:

  • This conversion kit replaces the original 230mm clutch and requires the ACT Flywheel that's included. If your Subaru was made after mid-2018, be aware that it might have 240mm components, which aren’t compatible with this kit. Pressure plate bolts are included (M8-1.25 x 16mm).

Fits the following models:

  • Subaru Baja 2006
  • Subaru Forester 2006-2008
  • Subaru Legacy 2005-2012
  • Subaru Outback 2005-2009
  • Subaru WRX 2006-2024

So, if you're serious about performance and want to feel the difference in your shifts, this clutch kit could be just what you need. It's built for those who push their cars to the limit.

Other Part Numbers:
ACT #actSB11-HDR4

Proposition 65

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

Vehicle
2006
Subaru Baja
2006-2008
Subaru Forester
2005-2012
Subaru Legacy
2005-2009
Subaru Outback
2006-2024
Subaru WRX

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.

Check out these other great products