Manley 11139-8 - Extreme Duty Inconel Exhaust Valves Subaru EJ20 / EJ25 - 33mm

Manley's Race Master Stainless Exhaust Valves for the Subaru EJ20 / EJ25 feature Chrome Stems, Hardened Tips, Fully Machined Surfaces and Swirl Polished Radii. These Valves are made from Xtreme Alloy Inconel Material which has proved to be the ultimate exhaust valve material for extreme applications. These valves are designed to withstand the rigors of extreme boost pressures commonly found in EJ20 / EJ25 Race Applications. We highly recommend these valves for engines running 30lbs + of boost and / or Nitrous and all Road Race, Rally and other types of Endurance applications. 

Part Number	11139-8
Type	Exhaust - Race
Head Diameter	33mm / +1mm
Stem Diameter	5.96mm / .2345"
Installed Height	Stock
Overall Length	104.75mm
Tip Length	3.5mm
Underhead Angle / Radius	25° x 11/32"
Margin	.060"
Seat Width	.100"
Top of Head	20° Dish