ACT 2006 Subaru Impreza XT-M/Race Sprung 6 Pad Clutch Kit
ACT SB10-XTG6 is the heavy-hitting race clutch for the Subaru Impreza WRX STI with the six-speed pull-type gearbox, listed here for the 2006 STI. It is built for cars making serious boost: big-turbo EJ257 builds that burn through stock and Stage 2 clutches, slip in third and fourth when the turbo spools, or need a clutch that survives repeated launches and track days.
The STI six-speed uses a pull-type release, so the release bearing pulls the diaphragm away from the engine instead of pushing it in. SB10-XTG6 pairs ACT's Xtreme pressure plate (SB019X) with a 6-pad, spring-centered ceramic race disc (6240618) and ACT's Monoloc. ACT rates the kit at 766 ft-lb at the crank, 115 percent over the factory clutch, on a 9.4 in (240 mm) disc and 1 in input shaft. Monoloc is ACT's one-piece replacement for the standard two-piece wedge collar and wire ring that holds a pull-type bearing to the pressure plate; ACT says it loads the bearing evenly, keeps it aligned regardless of driver habits or modifications, and greatly improves release mechanism life.
The disc is a race design. ACT lists engagement as aggressive and pedal effort as moderate to heavy, and says its Xtreme plates usually add 50 to 80 percent pedal effort. The kit includes the SB019X plate, 6240618 disc, RB601 release bearing, PB1004 pilot bearing and AT90 alignment tool. No flywheel is included.
Rule out the hydraulics before ordering: a spongy pedal or slow release on an STI is often air in the line or a weak slave cylinder. For slip, hold fourth gear at low rpm and go to full throttle; if the tach jumps ahead of road speed as boost arrives, the clutch is not holding. Our slipping diagnosis guide walks through it, and shift flare vs. slip explains the difference. If the pedal suddenly has no resistance and the car will not come out of gear, the release bearing has usually separated from the pressure plate and the transmission has to come out.
Our listing is titled for the 2006 Subaru Impreza and covers the 2006 WRX STI six-speed. ACT's chart for SB10-XTG6 covers the 2004-2014 Impreza WRX STI and the 2015-2021 WRX STI with the 2.5L turbo, the 2007-2009 Legacy GT spec.B, and JDM 2002-2005 STI models. It does not fit the non-STI WRX or 2.5i with the five-speed gearbox; those use ACT SB11 and SB12 kits. Confirm your car is an STI six-speed, or send us the year and VIN and we will check it. More STI clutch parts are in our rebuild kits section.
| Brand | ACT |
| Part number | SB10-XTG6 |
| Fits | ACT 2006 Subaru Impreza XT-M/Race Sprung 6 Pad Clutch Kit |
| Vehicle fitment | Subaru Impreza Xt-M/Race Sprung 6 (2006) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. ACT lists it for the WRX STI six-speed (2004-2021), the 2007-09 Legacy GT spec.B and JDM STI models. Five-speed WRX and 2.5i cars use different ACT kits.
It indicates the kit includes ACT's Monoloc, a one-piece replacement for the standard wedge collar and wire ring on the pull-type release bearing.
ACT rates SB10-XTG6 at 766 ft-lb measured at the crank, 115 percent over the factory clutch.
No. Resurface the factory flywheel or add an ACT 600235 Streetlite or 600240 Prolite, which ACT offers for this kit.
It is a race clutch. ACT lists aggressive engagement and moderate to heavy pedal effort, and recommends it for high horsepower street or race use.
