Clutch Masters 06-11 Lexus IS250 2.5L Aluminum Flywheel
The Clutch Masters FW-805-AL is an aluminum flywheel for the manual-transmission Lexus IS250 with the 2.5L V6, listed here for 2006-2011 cars. Owners usually shop for it during a clutch job, when the original flywheel is heat-checked, rattles at idle, or makes the car shudder pulling away, or when they want the engine to rev more freely between shifts.
On the six-speed IS250 the flywheel bolts to the back of the 4GR-FSE crankshaft and gives the clutch disc its friction face. It also carries the starter ring gear and stores rotating energy that helps the car pull away from a stop. An aluminum flywheel cuts that rotating mass, so the engine gains and drops revs faster. You feel it as quicker rev-matching on downshifts and a crisper response off the line once you adapt your launch.
Clutch Masters says the FW-805-AL is built to OE specifications so it works with the factory clutch or with an aftermarket clutch built to OE dimensions. The disc type still matters. Clutch Masters makes its IS250 FX100 kit in two versions: a rigid-disc kit for the factory flywheel and a dampened-disc kit, the 16250-HD00-D, made for an aftermarket single-mass flywheel like this one. The springs in a dampened disc hub absorb the firing pulses that a light single-piece flywheel no longer soaks up, which keeps gear rattle under control.
Most flywheel problems are confirmed with the transmission out, so decide during the clutch job. Look for heat cracks running toward the bolt holes, hard spots and scoring. A face that is only lightly glazed can sometimes be resurfaced, while a cracked or heavily spotted one should be replaced; our resurface vs. replace guide covers how to decide. If the complaint is slipping rather than shudder, read the slipping diagnosis guide first, and check the clutch hydraulics and the bellhousing seam for oil before buying parts.
Before you commit to aluminum, weigh how the car is driven. A lighter flywheel makes the car more eager but less forgiving in stop-and-go traffic and on hill starts. Our lightweight vs. stock flywheel guide lays out the trade-offs.
Our listing covers the 2006-2011 Lexus IS250 2.5L. Clutch Masters lists the FW-805-AL for the 2006-2012 IS250 2.5L 6-speed, which is the second-generation, rear-wheel-drive car with the manual gearbox. The IS250 AWD and the IS350 were automatic-only in that generation, so they do not use a clutch flywheel. If your car has been converted or you are unsure what it left the factory with, send us the year and VIN and we will check it before you order. Our IS250 and IS350 transmission problems page explains how the two drivetrains differ, and more clutch parts are in the rebuild kits and clutch section.
Clutch Masters lists the shipping weight at 22 lb, and it ships in its own box.
| Brand | Clutch Masters |
| Part number | FW-805-AL |
| Fits | Clutch Masters 06-11 Lexus IS250 2.5L Aluminum Flywheel |
| Vehicle fitment | Lexus Is250 (2006-2011) |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. In the 2006-2012 generation only the rear-wheel-drive IS250 was offered with the 6-speed manual. The IS250 AWD and IS350 were automatic-only and use a flexplate, not a clutch flywheel.
Clutch Masters says the flywheel is built to OE specifications and works with an OEM clutch kit or an aftermarket kit built to OE specifications. When the flywheel is replaced, most owners also replace the disc, pressure plate and release bearing, and a dampened disc is the better match for a single-mass aluminum flywheel.
Clutch Masters builds the IS250 FX100 in a dampened-disc version, part 16250-HD00-D, for use with an aftermarket single-mass flywheel such as this one. The rigid-disc version is meant for the factory flywheel.
It revs up and down faster, so launches need a little more throttle and hill starts take more care. Many owners adjust within a few days, but expect slightly more gear rattle at idle.
Clutch Masters lists the FW-805-AL for 2006-2012 IS250 2.5L 6-speed cars. If you have a 2012, send us the VIN before ordering and we will confirm it.
Bleed it with fresh DOT 3 or DOT 4 brake fluid after the install, as called for in the factory service information.
