Part Number: man11171-8

Description: Race Series Valves; Exhaust; Set of 8

Head Diameter: 33mm

Margin: .060"

O/A Length: 104.75mm

Seat Width: .080"

Stem Diameter: 6.0mm/.2362"

Tip Length: 3.5mm

Top of Head: 20° Dish

Underhead Angle/Radius: 25° x 11/32"

Fitment: 02-05 Subaru WRX & 04-07 STI

Details:

The Manley Race Master 33MM Exhaust Valves are available for those of you who are currently rebuilding their engine or heads. These are crafted from XH-426 Xtreme Alloy Material that feature chrome stems and hardened valve tips. These valves are also swirl polished and fully machined ready to install. If you have to re-machine heads due to the unfortunate event of a snapped timing belt, or if you are getting your heads re-machined then it makes sense to upgrade to a high-performance valve designed to sustain moderate modifications.