ACT 2010 Subaru Impreza XT/Perf Street Sprung Clutch Kit
The ACT SB11-XTSS is the street-friendly way to put a lot of clamp load on a tuned turbo Subaru. Instead of a puck-style race disc, it uses a full-face organic disc behind ACT's Xtreme pressure plate, so the car still pulls away smoothly in traffic while holding well past factory torque. Our listing is filed under the 2010 Impreza, meaning the 2.5L turbo WRX. ACT also lists it for the Legacy GT, Outback XT, Forester XT, Baja Turbo and the FA20 and FA24 WRX.
Like the rest of the SB11 line, this is a conversion from the factory 230mm clutch to a 240mm one. ACT includes its 600890 XACT Streetlite flywheel because the larger clutch will not bolt to the original flywheel. The combination is rated at 532 ft-lb at the crank, 72 percent over the stock clutch, with a kit weight of 28.6 lb.
The Xtreme plate (SB020X) is the higher-clamp of ACT's two single-disc plates for this car, and it is what pushes the pedal into ACT's moderate to heavy range. The disc is ACT's 3000505 Performance Street sprung disc: organic friction with high copper content for heat transfer and a steel-backed lining for burst strength. ACT describes the engagement as smooth with OE to mild gear rattle, and notes longer friction life. Compared with the SB11-XTG6, you give up about 150 ft-lb of rating in exchange for manners that suit a daily driver.
Kit contents per ACT: 600890 Streetlite flywheel, SB020X Xtreme pressure plate, 3000505 Performance Street sprung disc, PB1004 pilot bearing, RB846 release bearing and AT90 alignment tool, with M8-1.25 x 16mm plate bolts.
A high-gear, full-throttle pull from low rpm is the quickest test: if the tach jumps ahead without the car accelerating to match, the clutch is slipping. Walk through our slipping diagnosis guide and the flare vs. slip guide before you commit. Rule out a hydraulic problem that keeps the clutch partly released, and check for oil weeping from the rear main seal, since oil on an organic disc will cause slip and chatter right away. For a cost view of the job, see automatic vs. manual repair cost.
ACT's application list for SB11-XTSS: 2006-2011 Impreza WRX 5-speed, 2012-2014 Impreza WRX and WRX 5-speed, 2005-2012 Legacy GT 5- and 6-speed, 2005-2009 Outback XT, 2006-2008 Forester XT, 2006 Baja Turbo, 2015-2021 WRX 2.0L turbo 6-speed and 2022-2026 WRX 2.4L turbo 6-speed. It is not listed for the US STI. ACT's note says Subaru began using 240mm clutch components in mid-2018 model year production from VIN J806877, and ACT kits and flywheels are not compatible with that revised hardware. If you have a 2018-up WRX, send us your year and VIN before ordering. See more Subaru clutch parts in our rebuild kits and clutch section.
If you prefer a lighter pedal and less clamp, the SB11-HDSS uses the Heavy Duty plate with a street disc. The Xtreme plate alone is also sold as the SB020X pressure plate.
| Brand | ACT |
| Part number | SB11-XTSS |
| Fits | ACT 2010 Subaru Impreza XT/Perf Street Sprung Clutch Kit |
| Vehicle fitment | Subaru Impreza Xt/Perf (2010) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
It is one of the better fits for that use. The organic street disc engages smoothly with OE to mild gear rattle, while the Xtreme plate gives a 532 ft-lb rating. Expect a heavier pedal than stock.
ACT lists the 600890 Streetlite flywheel, SB020X Xtreme pressure plate, 3000505 Performance Street sprung disc, PB1004 pilot bearing, RB846 release bearing and AT90 alignment tool, plus M8-1.25 x 16mm plate bolts.
No. This kit converts the factory 230mm clutch to 240mm, so the ACT flywheel must be used. It is included.
Same Xtreme plate and flywheel. The XTG6 uses a 6-pad ceramic race disc for 681 ft-lb with aggressive engagement; the XTSS uses an organic disc for 532 ft-lb with smoother engagement and longer friction life.
ACT warns its kits are not compatible with the 240mm clutch parts Subaru introduced from VIN J806877 in mid-2018 model year production. Send us your year and VIN so we can confirm before shipping.
