Clearance - 20% Off - Ferrea - EVO 1-9 4G63 Exhaust Valve Set

Clearance - 20% Off - Ferrea - EVO 1-9 4G63 Exhaust Valve Set Position: Exhaust Head Diameter: 31.5 mm Stem Diameter: 6.55 mm Overall Length: 109.7 mm Tip Length: 3.8 mm Reference: 20 Degree Flo. + 1 mm oversize. Super Alloy Ferrea 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 crucial base of our molecular integrity. These valves feature avionics-quality hard chrome along with a specially applied hard tip.