Clutch Masters 06-08 Honda Civic 1.8L FX250 Sprung Organic/Fiber Tough Clutch Kit

The Clutch Masters 08025-HD0F is an FX250 sprung clutch kit for the 8th-generation Honda Civic with the 1.8L R18 engine and manual transmission, listed for 2006-2008. It suits the Civic owner whose original clutch is slipping at high mileage, or who has added an intake, exhaust or tune and wants more holding power without the harsh bite of a ceramic or puck disc. If your 1.8L Civic revs up on the highway on-ramp without pulling harder, this is a street-friendly replacement that holds more than stock.

What the FX250 kit does in a 1.8L Civic

The R18 manual Civic uses a single dry clutch released hydraulically. The pressure plate clamps the disc to the flywheel, and pressing the pedal moves the release bearing against the diaphragm fingers to free it. Clutch Masters pairs its Power Plus I heavy-duty pressure plate with a hybrid disc: Fiber Tough material on the pressure plate side and steel-backed organic on the flywheel side. The maker rates it at a 110 percent increase in holding capacity.

The disc keeps a Marcel spring wafer between the linings and a sprung hub, which is why it engages smoothly like an OEM clutch. Clutch Masters aims the FX250 at a spirited street driver or weekend racer who abuses the car now and then, and says it holds more than a full-faced Kevlar disc while staying as street friendly as its FX100 and FX200 kits. The kit includes a release bearing, pilot bearing where applicable and an alignment tool.

Symptoms of a worn clutch in a 1.8L Civic

• Engine RPM rises in third, fourth or fifth under load while speed lags behind.
• Engagement point high at the top of the pedal travel.
• Shudder or chatter pulling away from a stop, often from a glazed disc or hot-spotted flywheel.
• Chirp or growl that changes when you press the pedal, a sign of a dry release bearing.
• Burnt smell after a hill start or stop-and-go traffic.

How to confirm before you buy

Check the clutch hydraulics first. A low reservoir, a weeping slave cylinder or a spongy pedal can stop the clutch from releasing and cause grinding that looks like a clutch problem but is not. If the hydraulics are healthy, try a slip test: fourth gear at low RPM, then full throttle. Our transmission slipping guide explains the checks, and manual transmission repair cost shows what a clutch job usually runs compared with gearbox work.

Fitment

Our listing covers the 2006-2008 Honda Civic 1.8L with a manual transmission. Clutch Masters lists 08025-HD0F for the Civic 1.8L across 2006-2015. Our listing title stops at 2008, so if your car is a 2009-2015 1.8L manual, send us your year and VIN and we will confirm it before shipping. This kit does not fit the Civic Si (2.0L or 2.4L), the hybrid or automatic Civics. Compare other options in the clutch and rebuild kit collection, including the SPEC Stage 2+ SH463H and the Exedy Stage 2 08955 for the same engine.

Install notes

• Have the flywheel resurfaced or replaced. A glazed or heat-checked face will cause chatter with any new disc.
• Center the disc with the supplied alignment tool and tighten the pressure plate bolts gradually in a star pattern to spec.
• Inspect the release fork and pivot for wear and use a thin film of high-temperature grease on the input shaft splines.
• Refill the gearbox with Honda MTF and bleed the clutch hydraulics with the brake fluid shown on the reservoir cap.
• A tired rear or transmission mount adds shudder on takeoff. The 2006-2011 Civic 1.8L manual mount kit fits the same car.
• Follow the Clutch Masters break-in procedure for the first few hundred miles.

Does 08025-HD0F fit a 2010 Civic 1.8L?

Clutch Masters lists this kit for the Civic 1.8L from 2006-2015. Our listing is titled 2006-2008, so send your year and VIN and we will confirm the fit for 2009 and later cars before shipping.

Will the FX250 feel like a stock clutch?

Close to it. The disc has a sprung hub and a Marcel wafer, and Clutch Masters describes the FX250 as keeping the street-friendly feel of its FX100 and FX200 kits while holding more.

What comes in the kit?

Per Clutch Masters: the pressure plate, hybrid disc, release bearing, pilot bearing where applicable, alignment tool, instruction card and decals. The flywheel is not included.

Should I replace the flywheel too?

At minimum have it resurfaced. If it is cracked, heat-checked deeply or below minimum thickness, replace it. A bad flywheel face is the most common cause of chatter after a new clutch.

What fluid does the manual transmission use?

The 1.8L Civic manual takes Honda MTF. Bleed the clutch hydraulics with the brake fluid shown on the reservoir cap when the job is done.

• Transmission Slipping Diagnosis Guide
• Automatic vs. Manual Transmission Repair Cost
• Shift Flare vs. Slip: How to Tell the Difference