Clutch Masters 06-11 Mitsubishi Eclipse 3.8L Aluminum Flywheel
Clutch Masters FW-380-AL is an aluminum conversion flywheel for the 2006-2011 Mitsubishi Eclipse with the 3.8L V6 and six-speed manual. It takes the place of the factory dual-mass flywheel, the part most Eclipse GT owners end up dealing with when they hear a rattle at idle, feel a clunk on takeoff, or pull the gearbox for a clutch and find the old flywheel worn out. One rule comes first: Clutch Masters says this flywheel works only with a Clutch Masters single-disc clutch kit, not with the stock clutch or another brand.
The fourth-generation Eclipse GT and GT-P run the 3.8L V6 into a six-speed manual through a dual-mass flywheel. The two halves of that flywheel are joined by springs that damp the engine's firing pulses, and when the springs or center bearing wear, the rattle and slack show up. FW-380-AL replaces the whole assembly with one solid piece. Clutch Masters CNC machines it from 6061 aluminum, zero balances it, Type 3 hard anodizes the aluminum, and certifies it to SFI 1.2 for motorsport use. With far less mass on the crank, the V6 picks up and drops revs faster, which sharpens throttle response and makes heel-toe downshifts easier.
Expect some extra gear rattle at idle and a launch that needs a touch more throttle, since the damping springs are gone. Our lightweight vs stock flywheel guide lays out that trade-off.
Separate flywheel noise from other faults. Listen at idle with the pedal up and then down: a worn dual-mass unit usually goes quiet with the pedal in. A slipping clutch shows up as rpm rising faster than road speed under load in a high gear, the test described in our slipping diagnosis guide. Grinding shifts or a sinking pedal point to the hydraulics rather than the flywheel. The dual-mass failure guide explains each check, and our dual-mass vs single-mass guide covers what converting changes day to day.
Clutch Masters lists FW-380-AL for the 2006-2011 Mitsubishi Eclipse 3.8L, which means the GT and GT-P with the six-speed manual. It does not fit the 2.4L four-cylinder Eclipse, and automatic Eclipse models use a flexplate, so they do not take this part. Because it is a conversion flywheel, it must be paired with a Clutch Masters single-disc kit made for it, such as the FX250 sprung clutch kit for the 3.8L Eclipse. If the car has had an engine or gearbox swap, send us the year and VIN first. More options are in our rebuild kits and clutch collection.
FW-380-AL is new, in stock, ships from the USA the same business day, and is covered by a 1-year warranty.
| Brand | Clutch Masters |
| Part number | FW-380-AL |
| Fits | Clutch Masters 06-11 Mitsubishi Eclipse 3.8L Aluminum Flywheel |
| Vehicle fitment | Mitsubishi Eclipse (2006-2011) |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. Clutch Masters says this is a conversion flywheel that works only with a Clutch Masters single-disc clutch kit. It will not work with the OE clutch or other aftermarket kits.
The 2006-2011 Mitsubishi Eclipse with the 3.8L V6 and six-speed manual. It does not fit the 2.4L models, and automatic cars use a flexplate instead of a flywheel.
Clutch Masters machines it from 6061 aluminum, zero balances it, applies a Type 3 hard anodize, and certifies it to SFI 1.2.
Some gear rattle at idle is normal after converting from a dual-mass flywheel, because the damping springs are gone. Takeoff also needs slightly more throttle.
Fit the matching Clutch Masters kit, use clean or new flywheel bolts, and flush the clutch hydraulics with fresh brake fluid while the gearbox is out.
