Competition Clutch VQ35DE Stage 4 - 6 Pad Ceramic Clutch Kit
A turbocharged or supercharged 2003-2006 Nissan 350Z or 2003-2007 Infiniti G35 with the VQ35DE will overpower a stock clutch, and often a Stage 2 or Stage 3 as well. Competition Clutch 6072-1620 is the Stage 4 Strip Series kit for these cars: a six-puck sprung ceramic disc and performance pressure plate rated at up to 250 percent more torque capacity than the factory clutch. It is built for drag launches and big boost, not for a stock car that is simply worn out.
Instead of a full ring of friction material, the Stage 4 disc carries six ceramic buttons on a sprung hub. Less surface area with a far more aggressive material lets the disc clamp hard and keep holding once boost comes in, and ceramic tolerates the heat of repeated launches that would glaze an organic facing. The price is engagement that feels close to on or off, chatter when you slip the clutch at parking-lot speed, and faster wear on the flywheel face. The -1620 number is the sprung-hub version, which takes some of the shock out of engagement; Competition Clutch also builds a solid-hub -0620 variant for all-out racing.
Per Competition Clutch's spec table, the kit includes:
The flywheel is not included. The maker's general marketing copy mentions a flywheel where applicable, but the specification table for this part number lists the flywheel as not included.
A stock 350Z with a worn clutch shows a high engagement point, slow slip in the upper gears and judder on takeoff. For that car, the 6072-2100 Stage 2 kit or the 6072-2600 Stage 3 kit will be much easier to live with.
Make sure the problem is the disc and not the hydraulics. A fourth-gear roll-on from around 2,500 rpm that shows the tach climbing faster than road speed is slip. A soft pedal, a weeping slave cylinder or oil on the clutch from a rear main seal can all look like a weak clutch, and a stronger disc will not cure any of them. Our slipping diagnosis guide covers the road test and flare vs slip explains the difference in feel. Then be honest about torque: an engine making modest power will drive better on a lower stage.
Competition Clutch lists 6072-1620 for the 2003-2006 Nissan 350Z and the 2003-2007 Infiniti G35 with the 3.5 L VQ35DE and a manual transmission. It does not fit the 2007-up VQ35HR or VQ37HR cars; those take the 6073-1620 Stage 4 kit. The changeover is messy around 2006-2007, especially on G35 coupes and sedans, so check the engine code on the engine or send us your year and VIN before ordering. Engine or transmission swaps change the answer entirely; tell us what is in the car. More clutch options are on our rebuild kits page.
| Brand | Competition Clutch |
| Part number | 6072-1620 |
| Fits | Competition Clutch VQ35DE Stage 4 - 6 Pad Ceramic Clutch Kit |
| Type | Clutch Kits - Single |
| Condition | New |
| Ships | Same business day (in stock), from the USA |
| Warranty | 1-year |
Not the VQ35HR cars. 6072-1620 is listed for the 2003-2006 350Z and 2003-2007 G35 with the VQ35DE. VQ35HR and VQ37HR cars use the 6073-1620 kit. Check your engine code or send us the VIN.
Competition Clutch rates its Stage 4 Strip Series at up to a 250 percent increase in torque capacity over the stock clutch.
It can be driven daily, but engagement is abrupt and chatter in stop-and-go traffic is common with a six-puck ceramic disc. If the car is not making big power, a Stage 2 or Stage 3 kit is the better choice.
No. The kit includes the pressure plate, one six-paddle ceramic disc, throwout bearing, pilot bushing and alignment tool. Resurface or replace the flywheel at install.
The -1620 disc has a sprung hub that softens engagement and drivetrain shock. The -0620 is the solid-hub version for maximum strength, with more noise and harshness.
Competition Clutch says to shift as often as possible during the first 500 miles so the disc material beds into the pressure plate and flywheel. Avoid launches and hard pulls until then.
