Clutch Masters 02-06 Acura RSX 2.0L Type-S 6 Sp (High Rev) / 02-06 Honda Civic SI 2.0L& 6 Sp (High R
The Clutch Masters FX100, part 08037-HR00, is the mildest step in the Clutch Masters lineup for the six-speed K20: the 2002-2006 Acura RSX Type-S, the 2006-2011 Honda Civic Si and the 2006-2011 Acura CSX Type-S. It is the kit for an owner whose original clutch is simply worn out, or who has added an intake, a header or a cat-back exhaust and wants a little more clamp load without changing how the pedal feels. If you are searching because the car slips in the upper gears, the engagement point has crept to the top of the pedal, or you just want a fresh clutch that will outlast the factory one, this is the place to start.
In these cars the clutch is hydraulic: the master cylinder at the pedal pushes fluid to a slave cylinder on the transmission case, which moves the release fork and bearing against the pressure plate fingers. When the pedal is up, the pressure plate squeezes the disc between itself and the flywheel so the engine turns the gearbox input shaft. The FX100 uses the Clutch Masters Power Plus I heavy-duty pressure plate with a steel-backed organic friction disc. Clutch Masters rates the system at a 70 percent increase in holding capacity over stock.
What makes the FX100 different from the stronger kits for the same car is how little it changes the driving experience. The disc keeps a Marcel spring wafer under the facings and a sprung hub, so takeoffs stay soft. Clutch Masters describes the pedal effort as only slightly higher than factory, with normal engagement and release and longer life than stock. The maker aims it at street cars with minor bolt-ons, up to a 50 hp nitrous shot, or other naturally aspirated upgrades. It is not built for a turbo or supercharger. For a highly tuned or boosted K20, step up to the FX300 Kevlar kit 08037-HRTZ.
Warm the car up, pick a safe stretch of road, and floor it in fourth gear from about 2,500 rpm. If the tach rises faster than road speed, the disc is slipping. Rule out the hydraulics before you buy: check the clutch reservoir level, look for wet spots at the slave cylinder, and make sure the pedal returns all the way. A dragging clutch that grinds into gear is often a hydraulic or air-in-the-line issue, not a worn disc. Oil at the bellhousing seam means a crank or input shaft seal is leaking and has to be fixed while the gearbox is out, or it will ruin the new facing. Our slip diagnosis guide walks through the road test, and clutch slipping causes and fixes covers the manual-specific checks.
Clutch Masters lists 08037-HR00 for the 2002-2006 Acura RSX Type-S 2.0L six-speed, the 2006-2011 Honda Civic Si 2.0L six-speed and the 2006-2011 Acura CSX Type-S six-speed. Read our listing title carefully: it mentions a 2002-2006 Civic Si, but the 2002-2005 Civic Si was a five-speed car, and five-speed RSX and Civic Si models use the separate 08036 series, such as the 08036 five-speed kit. If your car has had a transmission swap, count the gears on the shifter and match the spline of the old disc, or send us your year and VIN before ordering. More options are in our rebuild kits section.
Per Clutch Masters, the kit contains the pressure plate, the heavy-duty disc, a release bearing, a pilot bearing where the application uses one, an alignment tool, an instruction card and decals. A flywheel is not included. Have the factory flywheel resurfaced to a clean, flat finish, or replace it if it is cracked or past its limit; the 2-800-ST 11.5 lb steel flywheel is one option for this engine. Center the disc with the alignment tool, run the pressure plate bolts down in a crisscross pattern a little at a time, and grease the input splines and fork pivot lightly. Bleed the clutch hydraulics with fresh DOT 3 or DOT 4 brake fluid; if the hose is soft or the pedal is spongy, a braided clutch line kit is worth doing while you are in there. Then follow the Clutch Masters break-in instructions, and see our clutch break-in guide for what to avoid in the first few hundred miles.
| Brand | Clutch Masters |
| Part number | 08037-HR00 |
| Fits | Clutch Masters 02-06 Acura RSX 2.0L Type-S 6 Sp (High Rev) / 02-06 Honda Civic SI 2.0L& 6 Sp (High R |
| Vehicle fitment | Acura Rsx (2002-2006) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. The 2002-2005 Civic Si uses a five-speed gearbox, and 08037-HR00 is listed only for six-speed cars: the 2002-2006 RSX Type-S, 2006-2011 Civic Si and 2006-2011 CSX Type-S. Five-speed cars use the 08036 series kits.
Clutch Masters builds the FX100 for naturally aspirated cars with minor bolt-ons or up to a 50 hp nitrous shot. A turbo or supercharged K20 should use a stronger kit such as the FX300 or FX400.
Only slightly, according to Clutch Masters. Engagement and release feel normal, which is why the FX100 suits a daily-driven RSX or Civic Si.
No. It includes the pressure plate, disc, release bearing, pilot bearing where used, alignment tool and instructions. Resurface the stock flywheel or fit a new one at the same time.
Honda fills the clutch hydraulics with brake fluid, DOT 3 or DOT 4. Bleed the slave cylinder after the install so the clutch fully releases.
