Manley Exhaust Valves 31.5mm Nissan 350Z / Infiniti G35 | 11149-12 vendor_Enkei you need some certain mods

you need some certain mods to utilize the true potential of the S2s

Unequal length design

Using a switch on the back you can even turn off the volt feature and run AFR all the time

These mounts bring world class performance to you for an affordable cost

This will give you a tighter

Manley Exhaust Valves 31.5mm Nissan 350Z / Infiniti G35 | 11149-12 vendor_Enkei you need some certain modsManley Performance has been manufacturing the finest stainless steel valves for over 40 years. Manley valves have been the standard of the industry from their inception, a fact that still remains true as they shift their focus and resources to the Sport Compact Market. The Manley Stainless Race Valves feature chrome stems, hard tips, fully machined surfaces and swirl polishing under their heads. These valves are available in both stock and oversized,