Competition Clutch VQ35DE 13.89lb Steel Flywheel
Boosted, tracked and drifted 2003-2006 Nissan 350Zs need a flywheel that keeps up with a heavy-duty clutch and lets the VQ35DE rev quickly between corners. The Competition Clutch 2-350Z-STU is the lightest flywheel the maker offers for the VQ35DE: 13.89 lb of one-piece 4140 forged steel, aimed at forced-induction, circuit, drift and rally cars rather than daily commuters.
A flywheel provides the friction face for the clutch and stores rotating energy. Take weight out and the engine spends less effort spinning it up, so rpm climbs and falls faster. On a 350Z that shows up as sharper throttle response, quicker heel-toe blips and less time waiting for revs to drop on upshifts. On a drift car it helps snap the engine back into the power band after a clutch kick.
The STU suffix is Competition Clutch's ultra-light line, machined with less material than the 18.65 lb ST street version. The maker recommends STU flywheels for forced induction and track use and pairs them with Stage 3, Stage 4 and Stage 5 clutch kits. The one-piece forged design means no pressed-on ring gear or separate friction insert to work loose under heat and high rpm.
The cost of the lighter weight is low-speed manners. Expect more gear rattle at idle, a car that is easier to stall pulling away, and less coasting momentum. If the car is mainly a street car, the 18.65 lb ST flywheel 2-350Z-ST is the better fit.
A ceramic or segmented clutch that slips is not always a worn clutch. Rule out oil on the disc from a rear main or input seal leak, and make sure the hydraulics give full release. Our slipping diagnosis guide walks through the load test, and the flare vs slip guide explains what each feels like. If you are pricing a whole clutch job, the manual vs automatic repair cost guide covers labor and parts.
Competition Clutch lists the 2-350Z-STU for the 2003-2006 Nissan 350Z with the VQ35DE engine. It is not for the VQ35HR in the 2007-2008 350Z or the 370Z. The maker's STU page names only the 350Z, while the matching ST page also lists the VQ35DE G35 coupe and sedan, so G35 owners should send their year and VIN before ordering. Check the engine code on 2006-2007 cars, since the changeover to the HR happened in that window. Browse more clutch parts in our hard parts category.
| Brand | Competition Clutch |
| Part number | 2-350Z-STU |
| Fits | Competition Clutch VQ35DE 13.89lb Steel Flywheel |
| Type | Flywheels |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
It can be driven daily, but it is built for boosted, track and drift cars. Expect more idle gear rattle and an easier stall on takeoff. For a mostly street car, the 18.65 lb 2-350Z-ST is the better choice.
No. Competition Clutch lists it for the 2003-2006 350Z with the VQ35DE. The 2007-2008 350Z uses the VQ35HR and the 370Z uses the VQ37VHR, which need different flywheels.
The maker's STU page lists only the 2003-2006 350Z VQ35DE, while the ST version also lists the VQ35DE G35 coupe and sedan. Send your year and VIN and we will confirm before you order.
Competition Clutch pairs STU flywheels with Stage 3, Stage 4 and Stage 5 clutch kits. For the VQ35DE that means the 6072-2600 segmented ceramic or 6072-1620 6-puck kits.
Install it with a new clutch kit, new flywheel bolts, a new pilot bushing or bearing, and a rear main seal if it shows any seepage. Bleed the clutch hydraulics with fresh brake fluid afterward.
