Ferrea Competition Plus Intake Valve - Nissan 350Z G35 VQ35 Stock Size - Set of 12 - F1562P 2.50" to 4.00" Ultra Series lobe profiles are

Ultra Series lobe profiles are designed in-house utilizing advanced simulation/CAD modeling techniques

If the bushings in your current GrimmSpeed Pitch Stop Mount are starting to see some wear and are in need of replacement

or can be closed with an included plug

2011:Cobra:CX50-SR:Base

2003:Toyota:MR2 Spyder:Base

Ferrea Competition Plus Intake Valve - Nissan 350Z G35 VQ35 Stock Size - Set of 12 - F1562P 2.50" to 4.00" Ultra Series lobe profiles areFerrea Competition Plus Valves have built a reputation as the industry's most reliable extreme duty valve. To manufacture the valves we use special aerospace quality alloys, including the EV8 Z18, which provides high tensile strength. An exclusive two step slow forging process ensures proper grain flow and virtually eliminates any damage to thematerial structure. The valves are then heat treated and stress relieved over a 48 hour period, which is the