Spec 06+ Honda Civic 1.8L Stage 2+ Clutch Kit
The SPEC SH463H is a Stage 2+ single-disc clutch kit for the eighth-generation Honda Civic with the 1.8L engine and a manual gearbox, 2006 through 2011. Owners usually find it after the factory clutch starts slipping in third and fourth at full throttle, after an intake, header and tune have pushed the stock disc past its comfort zone, or simply because the original clutch is worn out at high mileage and they want something that will hold more without turning the car into a chore to drive in traffic.
The R18 Civic sends power through a single dry clutch: the pressure plate bolts to the flywheel and squeezes the disc against it, and the release bearing pushes the diaphragm fingers to free the disc when you press the pedal. When the disc lining glazes or wears thin, clamp force can no longer hold engine torque and the RPM climbs without the car speeding up.
SPEC builds its Stage 2+ disc with a multi-friction lining. SPEC describes the Stage 2+ material as keeping the drivability of its Stage 2 Kevlar disc while adding roughly 15 to 20 percent more torque capacity. On the SH463H product page SPEC lists a torque rating of 291 ft-lb and a kit weight of 13 lb. That is well beyond what a stock or lightly built 1.8L makes, so this kit is aimed at owners who want a clutch that never becomes the weak link, including turbo builds, while keeping a street-friendly pedal and engagement.
Rule out hydraulics first. A leaking master or slave cylinder, air in the line, or contaminated fluid can mimic a worn clutch by leaving the disc partly engaged. A simple road test helps: in fourth gear at around 2,500 RPM, go to full throttle. If the tach jumps without a matching rise in speed, the disc is slipping. Our slipping diagnosis guide walks through the checks, and the flare vs. slip guide explains how to tell a slipping clutch from other drivetrain problems. For pedal-specific complaints see clutch engages high or low on the pedal.
SPEC lists the SH463H for the 2006-2011 Honda Civic 1.8L. That covers the DX, LX and EX trims with the manual gearbox in those years. It does not fit the Civic Si, which uses the 2.0L K20 and a different clutch, the Civic Hybrid, or automatic cars. The listing title says 06+, but SPEC's own fitment stops at 2011, so if you have a 2012-up 1.8L Civic, send us your year and VIN before ordering and we will confirm. If you are comparing grip levels for this car, the Exedy Stage 2 cerametallic kit for the 1.8L Civic is the more aggressive alternative. More parts are on our rebuild kits page.
| Brand | SPEC |
| Part number | SH463H |
| Fits | Spec 06+ Honda Civic 1.8L Stage 2+ Clutch Kit |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. SPEC lists it for the 1.8L Civic only. The Si uses the 2.0L K20 engine and needs a different clutch.
SPEC's fitment list for SH463H ends at 2011. Send us your year and VIN and we will check before you order rather than guess.
SPEC lists a torque rating of 291 ft-lb for the SH463H, far above a stock 1.8L, so it has headroom for bolt-ons and many turbo builds.
SPEC designs its Stage 2+ multi-friction disc to keep Stage 2 drivability with more holding power. Expect a firmer feel than stock, but it is meant for street use.
Resurface or replace the flywheel, check the slave cylinder and fork pivot, and replace worn engine and transmission mounts while the transaxle is out.
Drive normally for the first few hundred miles with no launches or extended slipping so the disc and flywheel faces bed in evenly.
