XClutch 15-17 Subaru WRX Base 2.0L Stage 2 Sprung Ceramic Clutch Kit
XClutch XKSU23015-1B is a Stage 2 single-disc kit with a sprung ceramic disc for the 2015-2017 Subaru WRX with the 2.0L FA20 turbo and six-speed manual. It is the kit for a WRX that now makes well past factory torque and is used hard: launch control at the strip, autocross runs back to back, or track days where an organic disc fades and starts to slip. If your car is a daily driver with a light tune, read the comparison below before you choose.
Subaru rated this engine at 268 hp with 258 lb-ft available from 2,000 rpm, and that early, flat torque is what a tune raises most. XClutch builds the 1B around a heavy duty pressure plate with 40 percent more clamping force than stock and a 9-1/16 in ceramic disc. The ceramic pads tolerate far more heat than organic facing before the friction level drops, which is why XClutch lists this kit for track use and rates it at 520 ft-lb of torque capacity, including its factor of safety.
The disc keeps a sprung hub. The springs absorb the shock of a hard engagement or a fast shift so less of it reaches the gearbox and axles, which matters on a car people launch. What the 1B does not have is a cushioned disc: the ceramic pads sit directly on the hub plate, so engagement is quicker and more on-off than stock. For a smoother street pedal, XClutch's XKSU23015-1C cushioned ceramic kit uses the same pressure plate class with a cushion between the friction faces, and the Stage 1 organic XKSU23015-1A suits a car that is close to stock.
Check the hydraulics first. A low reservoir, air in the line or a pedal that does not return fully can cause drag and hard shifting, which is not slip. Then do a loaded test: fourth gear at about 2,500 rpm, full throttle, and watch the tach against road speed. Our slipping diagnosis guide walks through it. If you are weighing a clutch job against other drivetrain work, our repair cost comparison lays out what the labor involves. With the gearbox out, look for oil on the bellhousing: a leaking rear main seal will contaminate a new ceramic disc just as fast as an old one.
Our listing covers the 2015, 2016 and 2017 Subaru WRX in Base, Premium and Limited trims with the 2.0L FA20 turbo and six-speed manual. XClutch's compatibility chart also includes earlier 2.5L EJ255 turbo cars, from the mid-2000s Impreza WRX through 2014, plus Legacy GT, Outback XT, Forester XT and Baja Turbo manuals. It does not fit the WRX STI or any CVT car. Cars built from mid-2018, starting at VIN J806877, use different clutch parts, such as the Clutch Masters 15915 kit we list for those cars. If the car has had a transmission swap, send us the year and VIN before ordering.
| Brand | XCLUTCH |
| Part number | XKSU23015-1B |
| Fits | XClutch 15-17 Subaru WRX Base 2.0L Stage 2 Sprung Ceramic Clutch Kit |
| Vehicle fitment | Subaru Wrx (2015-2017) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Both are Stage 2 ceramic kits for the same WRX. The 1B uses a sprung ceramic disc without cushioning, so it bites quicker and suits track use. The 1C adds cushioning for smoother street engagement.
XClutch rates the XKSU23015-1B at 520 ft-lb including its factor of safety, with 40 percent more clamping force than stock.
Our listing covers 2015-2017. Subaru changed the clutch parts during 2018 production, starting at VIN J806877, so send us your VIN for a 2018 car.
No. The kit includes the pressure plate, disc, release bearing, pilot bearing and alignment tool. Resurface the stock flywheel and keep the -0.079 in step XClutch specifies.
No. The STI uses a 2.5L engine and a different six-speed gearbox, so it needs an STI-specific kit.
It works on the street, but the uncushioned ceramic disc engages more abruptly than stock. For mostly street driving, the cushioned 1C or the Stage 1 organic 1A is usually the better match.
