ACT 2006 Subaru Impreza XT/Race Sprung 6 Pad Clutch Kit
The ACT SB11-XTG6 is a full 240mm conversion clutch for turbocharged Subarus, built around ACT's Xtreme pressure plate, a 6-pad sprung ceramic race disc and a matched XACT Streetlite flywheel. Our listing is filed under the 2006 Impreza XT, but ACT catalogs it for the EJ255 Impreza WRX, Legacy GT, Outback XT, Forester XT and Baja Turbo, plus later FA20 and FA24 WRX applications. It is the kit people reach for when a tuned five-speed WRX or Legacy GT starts slipping the moment boost arrives.
The factory clutch on these cars is a 230mm unit. ACT's note on the SB11 kits is that they are conversion kits: they replace the original 230mm clutch with a 240mm system, and the ACT flywheel is required, which is why it comes in the box. The larger disc gives more friction area and more room to absorb heat on repeated pulls.
ACT's kit contents list is specific: the 600890 XACT Streetlite flywheel, the SB020X Xtreme pressure plate, the 6240518 6-pad sprung race disc, a PB1004 pilot bearing, an RB846 release bearing and an AT90 alignment tool. Pressure plate bolts (M8-1.25 x 16mm) are included as well. ACT rates the assembly at 681 ft-lb at the crank, 121 percent over the factory clutch, and lists the product weight at 29 lb.
The Streetlite flywheel is the main thing that separates this kit from the SB12-XTG6, which ships with ACT's lighter Prolite flywheel. Streetlite keeps a bit more rotating mass, which helps pulling away from a stop on a car that still sees traffic.
Do a slip test in a high gear from about 2,500 rpm at full throttle and watch whether engine speed runs ahead of road speed as boost builds. Our slipping diagnosis guide lays out the method, and the flare vs. slip guide helps separate a true slipping clutch from other problems. Check the clutch hydraulics too; a slave cylinder that does not fully return can hold the clutch partly released. Look for engine oil at the bellhousing seam, because a leaking rear main seal will soak a new ceramic disc.
ACT lists the SB11-XTG6 for the 2006-2011 Impreza WRX five-speed, the 2012-2014 WRX five-speed, the 2005-2012 Legacy GT (five- and six-speed), the 2005-2009 Outback XT, the 2006-2008 Forester XT, the 2006 Baja Turbo, the 2015-2021 WRX 2.0L turbo and the 2022-2026 WRX 2.4L turbo. It is not listed for the US-market STI. ACT also warns that Subaru moved to 240mm clutch parts in mid-2018 model-year production starting at VIN J806877, and ACT kits are not compatible with those revised parts. If your car is a 2018 or later WRX, send us the year and VIN before ordering. Browse the rest of our Subaru clutch range in the rebuild kits and clutch section.
Expect heavier pedal effort and abrupt engagement. If the car is driven daily, the same plate with an organic disc is sold as the SB11-XTSS street kit, and the SB11-HDG6 pairs the race disc with a lighter-effort heavy-duty plate.
| Brand | ACT |
| Part number | SB11-XTG6 |
| Fits | ACT 2006 Subaru Impreza XT/Race Sprung 6 Pad Clutch Kit |
| Vehicle fitment | Subaru Impreza Xt/Race Sprung 6 (2006) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
ACT lists the 600890 XACT Streetlite flywheel, SB020X Xtreme pressure plate, 6240518 6-pad sprung race disc, PB1004 pilot bearing, RB846 release bearing and AT90 alignment tool, plus M8-1.25 x 16mm pressure plate bolts.
No. ACT calls this a conversion kit that replaces the original 230mm clutch with a 240mm system, and the ACT flywheel must be used. That flywheel is included.
ACT lists later WRX models, but warns that Subaru switched to 240mm clutch parts mid-2018 model year starting at VIN J806877 and that ACT kits are not compatible with those revised parts. Send us your year and VIN so we can check before it ships.
Both use an Xtreme plate and 6-pad sprung race disc rated at 681 ft-lb. The SB11 kit comes with the XACT Streetlite flywheel, while the SB12 kit uses the lighter Prolite flywheel.
It can, but ACT describes moderate to heavy pedal effort and aggressive engagement, recommended for high horsepower street or race use. A mostly-street car is usually happier with an organic disc kit like the SB11-XTSS.
