Competition Clutch VQ35HR/VQ37HR Stage 1 - Gravity Clutch Kit (*TOB NOT Included*)
Competition Clutch 6073-2400 is the entry-level Stage 1 kit for the VQ35HR and VQ37HR cars: the 2007-2011 Nissan 350Z and 370Z and the 2007-2013 Infiniti G35 and G37 with a manual gearbox. It is for the naturally aspirated Z or G that has intake, exhaust and a tune, or a stock car that gets driven hard, and is starting to slip in the upper gears. It keeps a near-stock pedal, so it is a good fit for a car that still commutes.
The VQ-powered rear-drive cars bolt a single dry clutch to the flywheel behind the engine. When you press the pedal, hydraulic pressure moves the release bearing into the pressure plate diaphragm, which lifts the clamp off the disc and lets the six-speed shift. Competition Clutch says its Stage 1 kits provide roughly 40-50 percent more torque capacity than stock while keeping a stock-like pedal feel. The listed contents are a Competition Clutch performance pressure plate and a six-pad ceramic performance disc.
The maker is clear that Stage 1 is for naturally aspirated cars. It is not recommended with a turbocharger, supercharger or nitrous. If your car has boost or a big shot, step up to the Stage 4 6073-1620 or one of the Stage 2 or 3 kits.
Make sure the hydraulics are healthy first. A pedal that does not return fully or a leaking slave can hold the clutch partly released and act like slip. Bleed the system and look for wetness at the bellhousing that could mean a rear main or input seal leak. Then do a high-gear pull from low rpm and watch whether the tach runs ahead of road speed. Our slipping diagnosis guide covers that road test. For what a full Z clutch job usually involves, see the 350Z and 370Z clutch replacement cost guide.
Competition Clutch lists 6073-2400 for the 2007-2011 Nissan 350Z and 370Z and the 2007-2013 Infiniti G35 and G37 with a manual transmission. These are the VQ35HR and VQ37HR engines. The earlier VQ35DE cars (2003-2006 350Z and the early G35 coupe) take Competition Clutch's 6072 kits, so check the engine code on a 2007 G35: the new-body sedan uses the VQ35HR, while the carryover coupe kept the VQ35DE. The maker's listing stops at the 2011 370Z; for a 2012 or later 370Z, send us the year and VIN and we will confirm before it ships. More Z and G clutch parts are in our rebuild kits collection.
As the listing title says, the throwout bearing is not included. Competition Clutch's spec table for 6073-2400 shows the pressure plate, one 6-paddle ceramic disc, a pilot bushing and an alignment tool, with no throwout bearing and no flywheel. Plan to supply a new release bearing for your car at the same time; reusing a worn one is the most common cause of a noisy pedal after a clutch job. The maker also publishes a bearing travel tech tip for this part number, so check release bearing travel during install.
| Brand | Competition Clutch |
| Part number | 6073-2400 |
| Fits | Competition Clutch VQ35HR/VQ37HR Stage 1 - Gravity Clutch Kit (*TOB NOT Included*) |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
No. The maker's spec table lists the pressure plate, a 6-paddle ceramic disc, a pilot bushing and an alignment tool, with no throwout bearing and no flywheel. Buy a new release bearing for your car with the kit.
No. Those VQ35DE cars use Competition Clutch's 6072 kits. The 6073 kits are listed for the VQ35HR and VQ37HR cars: 2007-2011 350Z and 370Z and 2007-2013 G35 and G37 manuals.
Competition Clutch does not recommend Stage 1 kits with added forced induction or nitrous. A boosted VQ should use a Stage 2, 3 or 4 kit rated for more torque.
No flywheel is included. At minimum, inspect and resurface a reusable flywheel. Many owners switch from the factory dual-mass unit to a single-mass steel flywheel at the same time.
Competition Clutch rates its Stage 1 kits at roughly 40-50 percent more torque capacity than stock, with near-stock pedal feel.
