ACT 2015 Ford Focus HD/Perf Street Rigid Clutch Kit
The 2015 Ford Focus ST has one well-known weak link once it is tuned: the factory clutch starts slipping in third and fourth as soon as boost and torque go up. If your ST flares rpm on a pull, smells hot after a few runs, or the pedal feels like it engages higher every month, the ACT FF2-HDSD is a heavy duty street clutch built for exactly this car that keeps the factory dual-mass flywheel.
The Focus ST's 2.0-liter EcoBoost makes about 270 lb-ft from the factory, and a simple tune pushes that well past what the stock disc can hold. ACT rates the FF2-HDSD at 449 ft-lb at the crank, 34 percent over the OE clutch. The F023 Heavy Duty pressure plate raises clamp load through ACT's diaphragm design, while the 3001010 disc is a 240 mm (9.4 in) rigid-hub organic disc with a heat-treated chromoly hub. Rigid means no damper springs in the disc; ACT designed it to work with the ST's stock dual-mass flywheel, which already does the vibration damping. The organic facing keeps engagement smooth enough for daily traffic.
Run a load test in fourth gear from about 2,000 rpm at full throttle and watch whether rpm climbs faster than speed. A datalog showing boost and rpm spiking while vehicle speed stalls confirms slip. Check the dual-mass flywheel at the same time: if it has excessive free play or rocks on its bearing, it must be replaced, because this kit reuses it. Our slipping diagnosis guide covers the load test, and shift flare vs. slip explains how to tell clutch slip from other drivetrain faults.
This listing is titled for the 2015 Ford Focus ST with the 2.0L turbo and six-speed manual. ACT's application chart covers the full 2013 to 2015 Focus ST run with the same kit. It is not the clutch for the 2016 and later Focus RS, which uses a different ACT FF5 series. Input shaft diameter is 1 in. If your car has had driveline swaps, send us the year and VIN and we will confirm. Browse the rest of our clutch and rebuild kits.
Inspect the dual-mass flywheel before reassembly; it must be in spec since there is no flywheel in this kit. Clean the friction face, center the disc with the AT130 tool, and run the new pressure plate bolts down in steps in a crisscross pattern to factory torque. Fit the new RB009 bearing and check the release mechanism for wear. Bleed the hydraulics with the fluid listed on the reservoir cap. Expect a firmer pedal (ACT quotes 15 to 40 percent more effort on Heavy Duty plates) and a little more gear rattle at idle than stock because of the rigid disc; that is normal. Break in the organic disc with 300 to 500 miles of easy driving. Running more power or track days? The FF2-HDR6 race kit and the Stage 3 segmented ceramic kit are the stronger alternatives, and a clutch alignment tool kit is handy if you work on more than one car.
| Brand | ACT |
| Part number | FF2-HDSD |
| Fits | ACT 2015 Ford Focus HD/Perf Street Rigid Clutch Kit |
| Vehicle fitment | Ford Focus Hd/Perf (2015) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Yes. ACT lists the FF2-HDSD for 2013 to 2015 Ford Focus ST with the 2.0L turbo. This listing is titled 2015; send your VIN if you want it double-checked.
ACT designed this kit for the stock dual-mass flywheel, so no flywheel is included or required. Replace the dual-mass only if it shows excessive play or damage.
ACT rates it at 449 ft-lb at the crank, 34 percent over stock, which covers most tuned street STs. For heavy track use or big turbo builds, the FF2-HDR6 6-pad race kit is the step up.
The disc has a rigid hub with no damper springs. ACT notes increased gear rattle and possibly more spline wear as the trade-off; the dual-mass flywheel still handles most of the damping.
No. The 2016 and later Focus RS uses a different clutch; ACT's FF5 series covers it.
