ACT 2012 Honda Civic XT/Race Rigid 6 Pad Clutch Kit
ACT AR2-XTR6 is the most aggressive single-disc kit ACT builds for the 2.4-liter K24 six-speed, and it is aimed squarely at the 2012 Honda Civic Si owner who has added a turbo, a supercharger or a big nitrous shot and keeps burning through street clutches. If your 9th-generation Si flares in third gear at boost, smells hot after a drag pass, or the factory disc is simply gone, this is a race kit that comes with its own lightweight flywheel so the whole friction stack is replaced at once.
ACT pairs its Xtreme pressure plate (H024X) with a 6-pad rigid ceramic race disc (6214010A) and an XACT Streetlite flywheel (600780). The Xtreme plate carries the highest clamp load in ACT's lineup, and the disc has no damper springs: the chrome-moly hub is solid, which lets the engine load the gearbox instantly and makes shifts quicker. ACT rates the kit at 435 ft-lb at the crank, 109 percent above the stock Honda clutch. The disc is 8.4 inches (214 mm) and the box weighs about 24.6 pounds.
The trade-off is drivability. ACT lists moderate to heavy pedal effort, aggressive engagement and increased gear rattle, notes that the rigid hub may increase spline wear, and recommends the kit for race use only. Our sprung vs. unsprung disc comparison explains what that rattle and spline wear mean in practice.
On a naturally aspirated or lightly bolted-on Si this kit is more clutch than you need. The ACT HD/Perf Street Sprung kit (AR2-HDSS) or the XT/Perf Street Sprung kit (AR2-XTSS) keep a damped disc and are far easier to live with in traffic.
A clutch that will not disengage is a hydraulic or release problem, not a disc problem, so check the slave cylinder and fluid first. To confirm slip, put the car in third around 2,500 rpm and go to full throttle: if engine speed jumps ahead of road speed, the friction surfaces are not holding. Our slipping diagnosis guide walks through the test, and shift flare vs. slip helps separate the two. Grinding going into third on a 2.4 Si is usually a synchro issue, covered in our Civic Si third-gear grind guide; a new clutch will not cure that.
Our listing is the 2012 Honda Civic Si. ACT's application chart for AR2-XTR6 covers the K24 2.4-liter manual cars: 2012-2015 Civic Si and Si HFP, 2003-2012 Accord 2.4 (DX, LX, EX and related trims), 2009-2014 Acura TSX 2.4 and 2013-2015 Acura ILX 2.4. It does not cover the 1.8 Civic or the 2.0 Si of earlier generations. Because ACT offers ten different AR2 kits with similar names, match the full part number AR2-XTR6 to your order, or send us your year and VIN and we will confirm before it ships. Other options are in our rebuild kits and clutch section.
A rigid race disc puts more shock into the drivetrain mounts, so worn mounts on a TSX or Accord are worth replacing at the same time with a TSX engine and transmission mount kit.
| Brand | ACT |
| Part number | AR2-XTR6 |
| Fits | ACT 2012 Honda Civic XT/Race Rigid 6 Pad Clutch Kit |
| Vehicle fitment | Honda Civic Xt/Race Rigid 6 (2012) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes. ACT lists the kit contents as the 600780 XACT Streetlite flywheel, H024X Xtreme pressure plate, 6214010A 6-pad rigid race disc, RB313 release bearing, PBNA004 pilot bushing and AT78 alignment tool.
ACT's chart lists the 2012-2015 Civic Si 2.4, 2003-2012 Accord 2.4, 2009-2014 TSX 2.4 and 2013-2015 ILX 2.4, all manual. Send us your year and VIN if you want us to double-check.
ACT rates AR2-XTR6 at 435 ft-lb of torque at the crank, 109 percent over the stock clutch.
You can, but ACT recommends it for race use only. Expect moderate to heavy pedal effort, on-off engagement, more gear rattle at idle and possible extra spline wear. A sprung street kit is the better choice for a daily.
Honda specifies its own manual transmission fluid (Honda MTF) for this six-speed. Refill it while the gearbox is out and bleed the clutch hydraulics with the brake fluid shown on the reservoir cap.
