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ACT Clutch Kit Subaru WRX STI 2.5L (2004-2021) Mod Twin Disc – Heavy Duty Xtreme Duty Maxx Xtreme Rigid Street Race on Sale

Original price was: $1,794.00.Current price is: $538.20.
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15 - 22 Mar, 2025
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Description

Fitment Information

  • Subaru WRX STI Base 2.5L H4 (2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021)
  • Subaru WRX STI Launch Edition 2.5L H4 (2015)
  • Subaru WRX STI Limited 2.5L H4 (2007, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021)
  • Subaru WRX STI S209 2.5L H4 (2019)
  • Subaru WRX STI Series.HyperBlue 2.5L H4 (2016)
  • Subaru WRX STI Special Edition 2.5L H4 (2010)
  • Subaru WRX STI Sport 2.5L H4 (2017, 2018, 2019, 2020, 2021)
  • Subaru WRX STI Sport-tech 2.5L H4 (2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021)
  • Subaru WRX STI Tsurugi Edition 2.5L H4 (2014)
  • Subaru WRX STI Type RA 2.5L H4 (2018)
  • Subaru WRX STI 2.5L H4 (2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2018, 2019, 2020)
    • Specs & Features

      • Mod-Twin 225 Heavy Duty Rigid Race – T1R-S07

        • Torque Capacity (ft lbs.): 895 – Torque Capacity is measured at the Engine Crank

        • Torque Capacity Over OE: 152%

        • Disc Material: Ceramic

        • Clutch Disc Diameter (Inches): 8.8

        • Clutch Disc Diameter (Millimeters): 225

        • Input Shaft Diameter (inches): 1

        • Pressure Plate Type: Heavy Duty

        • SFI: 1.2
          • Mod-Twin 225 HD Rigid Street – T1S-S07

            • Torque Capacity (ft lbs.): 700 – Torque Capacity is measured at the Engine Crank

            • Torque Capacity Over OE: 97%

            • Disc Material: Organic

            • Clutch Disc Diameter (Inches): 8.8

            • Clutch Disc Diameter (Millimeters): 225

            • Input Shaft Diameter (inches): 1

            • Pressure Plate Type: Heavy Duty

            • SFI: 1.2

              • Mod-Twin 225 XT Rigid Race – T2R-S07

                • Torque Capacity (ft lbs.): 1120 – Torque Capacity is measured at the Engine Crank

                • Torque Capacity Over OE: 214%

                • Disc Material: Ceramic

                • Clutch Disc Diameter (Inches): 8.8

                • Clutch Disc Diameter (Millimeters): 225

                • Input Shaft Diameter (inches): 1

                • Pressure Plate Type: Xtreme

                • SFI: 1.2

                  • Mod-Twin 225 XT Rigid Street – T2S-S07

                    • Torque Capacity (ft lbs.): 875 – Torque Capacity is measured at the Engine Crank

                    • Torque Capacity Over OE: 146%

                    • Disc Material: Organic

                    • Clutch Disc Diameter (Inches): 8.8

                    • Clutch Disc Diameter (Millimeters): 225

                    • Input Shaft Diameter (inches): 1

                    • Pressure Plate Type: Xtreme

                    • SFI: 1.2

                      • Mod-Twin 225 Maxx Xtreme Rigid Race – T3R-S07
                        • Torque Capacity (ft lbs.): 1340 – Torque Capacity is measured at the Engine Crank

                        • Torque Capacity Over OE: 275%

                        • Disc Material: Ceramic

                        • Clutch Disc Diameter (Inches): 8.8

                        • Clutch Disc Diameter (Millimeters): 225

                        • Input Shaft Diameter (inches): 1

                        • Pressure Plate Type: Maxx Xtreme

                        • SFI: 1.2

                                    • Product Description

                                      Upgrade your high-performance AWD vehicle with ACT s Mod-Twin 225 Clutch Kit, engineered for ultimate durability and precision. Combining twice the ceramic or organic friction surfaces with a rigid Mono-Drive hub, this modular design ensures aggressive launches and rapid shifts, whether on the street or the track. Enduring an exclusive four-stage heat treating process, each diaphragm spring delivers consistent pedal feel and torque transfer, while the lightweight construction allows for seamless, trouble-free service. With CNC-machined components and advanced materials, including puck-style friction plates, chrome-moly hub, and patented Monoloc Collar, this kit guarantees superior performance and longevity. Experience smoother engagement, quicker shifts, and enhanced driving dynamics with ACT s Mod-Twin 225 Clutch Kit – your ultimate solution for high-powered AWD vehicles.

                                      • Feel

                                        • Mod-Twin 225 Heavy Duty Rigid Race  XT Rigid Race 

                                          • Experience a predictable and aggressive engagement with light pedal effort, allowing for quick shifting. While there may be some start-off judder with OE to mild transmission gear noise, overall performance is optimized.
                                            • Mod-Twin 225 HD Rigid Street  XT Rigid Street 

                                              • Enjoy a soft, progressive engagement with light pedal effort, ensuring smooth shifting while minimizing transmission gear noise from OE to mild levels.
                                                • Mod-Twin 225 Maxx Xtreme Rigid Race 

                                                  • Experience predictable aggressive engagement with increased pedal effort for smooth shifting. Note: Possible start-off judder with OE to mild transmission gear noise.
                                                      • Life – Built with a forged aluminum cover, mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points, ensuring durability and longevity even under the most demanding conditions.

                                                      • Quality – Designed to deliver maximum performance and high heat tolerance through a robust design, strategic features, choice materials, and close tolerances, guaranteeing reliability in every race.

                                                      • Recommended Use

                                                        • Mod-Twin 225 Heavy Duty Rigid Race XT Rigid Race  Maxx Xtreme Rigid Race 

                                                          • Ideal for drag, road, or rally racing, providing exceptional performance across various racing disciplines.
                                                            • HD Rigid Street  XT Rigid Street 

                                                              • Perfect for street driving or street strip applications, offering versatility for various driving scenarios.
                                                                  • ACT Difference – ACT applies tactical engineering to the MOD-TWIN, offering unique solutions to common tradeoffs found on twin disc clutches. The result is an ultra-durable, customer serviceable, long-lasting clutch with very high torque capacity. All clutches are 100% clamp load tested, balanced, and SFI certified.

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