T1S-S05 - ACT Mod-Twin 225 Heavy Duty Sprung Street Clutch Kit

Specifications

Specifications
Item Description	ACT Mod-Twin 225 Heavy Duty Sprung Street Clutch Kit
Product Weight (lbs.)	28.1
Torque Capacity (ft/lbs.)	700
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
Warranty	12 Months (view details)
SFI	1.2

Description

T1S-S05 Mod-Twin 225 HD Sprung Street Kit is designed for high powered AWD street cars. It unites uncompromised pedal feel, durability, engagement quality with very high torque capacity by combining twice the organic friction surfaces with an ultra-durable spring center Mono-Drive hub in a completely modular design. Each diaphragm spring endures an exclusive four-stage heat treating process providing a consistent light pedal feel. Steel-backed Friction Plates with high quality organic friction materials deliver stable friction coefficient, good heat capacity and long clutch life. These Friction Plates uniformly transfer torque to the Mono-Drive sprung hub assembly which extends input shaft life and reduces driveline shock from torsional vibration. This kit includes a CNC-machined and dynamically balanced flywheel, pressure plate cover, diaphragm spring, face, puck-style ceramic friction plates, sprung Mono-Drive hub assembly, floater, patented Monoloc Collar, release bearing, alignment tool and pilot bearing (if needed). Mod-Twin clutches are fully rebuildable and most components can be ordered separately.

Description
Feel	Soft progressive engagement, light pedal effort, smooth shifting with OE to mild transmission gear noise
Life	Forged Aluminum Cover, Mono-drive hub, exclusive diaphragm, premium friction materials, and hardened wear points ensure this long-life twin performs and survives under the most demanding conditions
Quality	Delivers maximum performance and high heat tolerance by combining robust design, strategic features, choice materials, and close tolerances
Recommended Use	Street or Street/Strip
ACT Difference	Applying tactical engineering to the MOD-TWIN, ACT presents unique solutions to common tradeoffs found on twin disc clutches, resulting in an ultra-durable, customer serviceable, long-lasting clutch with very high torque capacity. All are 100% clamp load tested, balanced and SFI certified

Vehicle Fitment

Fitment Info
Application	Engine
2004 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2005 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2006 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2007 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2007 Subaru Impreza WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2008 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2009 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2010 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2010 Subaru Impreza WRX STI Special Edition	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2011 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2011 Subaru Impreza WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2012 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2012 Subaru Impreza WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2013 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2013 Subaru Impreza WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2013 Subaru WRX STI	2.5 H4 GAS FI 2458cc \| DOHC
2013 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2013 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC
2014 Subaru Impreza WRX STI	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2014 Subaru Impreza WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC \| Turbocharged
2014 Subaru WRX STI	2.5 H4 GAS FI 2458cc \| DOHC
2014 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2014 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC
2014 Subaru WRX STI Tsurugi Edition	2.5 H4 GAS FI 2458cc \| DOHC
2015 Subaru WRX STI	2.5 H4 GAS FI 2458cc \| DOHC
2015 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2015 Subaru WRX STI Launch Edition	2.5 H4 GAS FI 2458cc \| DOHC
2015 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2016 Subaru WRX STI	2.5 H4 GAS FI 2458cc \| DOHC
2016 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2016 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2016 Subaru WRX STI Series.HyperBlue	2.5 H4 GAS FI 2458cc \| DOHC
2017 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2017 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2017 Subaru WRX STI Sport	2.5 H4 GAS FI 2458cc \| DOHC
2017 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC
2018 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2018 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2018 Subaru WRX STI STI	2.5 H4 GAS FI 2458cc \| DOHC
2018 Subaru WRX STI Sport	2.5 H4 GAS FI 2458cc \| DOHC
2018 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC
2018 Subaru WRX STI Type RA	2.5 H4 GAS FI 2458cc \| DOHC
2019 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2019 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2019 Subaru WRX STI S209	2.5 H4 GAS FI 2458cc \| DOHC
2019 Subaru WRX STI STI	2.5 H4 GAS FI 2458cc \| DOHC
2019 Subaru WRX STI Sport	2.5 H4 GAS FI 2458cc \| DOHC
2019 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC
2020 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2020 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2020 Subaru WRX STI STI	2.5 H4 GAS FI 2458cc \| DOHC
2020 Subaru WRX STI Sport	2.5 H4 GAS FI 2458cc \| DOHC
2020 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC
2021 Subaru WRX STI Base	2.5 H4 GAS FI 2458cc \| DOHC
2021 Subaru WRX STI Limited	2.5 H4 GAS FI 2458cc \| DOHC
2021 Subaru WRX STI Sport	2.5 H4 GAS FI 2458cc \| DOHC
2021 Subaru WRX STI Sport-tech	2.5 H4 GAS FI 2458cc \| DOHC

FAQ

Frequently Asked Questions

Are ACT clutches balanced?: Yes! All ACT clutch assemblies are computer spin balanced to within .25 oz-in to guarantee help smooth operation across the entire RPM range. For comparison, stock production clutches are typically balanced to within .50 oz-in. Lower is definitely better!
Will an ACT clutch increase pedal effort?: ACT pressure plates are specifically designed to handle high torque applications. With ACT's durable design, expect an increase in pedal effort between 15-40% (Heavy Duty) and 50-80% (Xtreme), depending on the application. Clutches developed with less pedal effort often result in a lack of longevity, torque capacity and/or engagement quality.
Do ACT clutches require a break in period?: For organic street discs, we recommend breaking in the clutch for 300-500 miles with mild engagement, such as stop-and-go city driving prior to racing or spirited driving. ACT race discs usually only require a few hard slips to lap in the surfaces prior to normal driving or racing. Do not overheat the clutch during the break in period, as this can result in friction surfaces fusing together, hot spots, and friction surface glazing.
Are ACT clutches repairable or rebuildable?: In some situations, rebuilds or repairs may be possible (see warranty), after inspection of the clutch assembly. Please contact our technical department for further information. Because of special modifications, we do not recommend servicing by a general clutch rebuilder.
How much does an ACT clutch weigh?: The weight of the ACT clutch assembly will usually be the same as a stock OEM clutch assembly.

Instructions/Warranty

Product Warranty

Installation Instructions

Prop 65

PROP 65 WARNING

This product can expose you to chemicals including carbon black, glass wool fibers, and silica (in clutch discs), chromium and nickel, which are known to the State of California to cause cancer or birth defects or other reproductive harm. for more information, visit www.P65Warnings.ca.gov

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