Manley Race Master exhaust valves are available in different sizes and listed by head diameter. Exhaust valves are sold as a set of 8. Fits 2002-2005 EJ205 Subaru WRX and 2004-2021 EJ257 Subaru STi. These valves are not compatible with the 2006+ WRX.
Vehicle Fitment:
EJ205 / EJ257
• 2002-2005 Subaru WRX
• 2004-2021 Subaru STi
(* Not for 2006+ WRX models *)
Purchase Includes:
• Set of 8 Valves
• Select Head Diameter Valve Size
Manley Race Master Valves:
Manley Race Master Valves are designed and engineered to withstand the abuse of the track. Race Master valves are targeted by the bracket, drag, and oval track racers, or even those with modified street engines that are operating at engine speeds below 8,000 rpm. These valves are constructed from XH-426 material for the exhaust and NK-842 for the intake valves, making them the strongest valves in their class.
Install Note:
Manley strongly recommends that customers check their valve guide size in order to achieve the proper valve stem to guide clearance. Guides may need to be honed when replacing stock factory valves.
| Exhaust Valve Specs: | ||||||||
| Stem Diameter | Installed Height | O/A Length | Tip Length | Underhead Angle Radius | Margin | Seat Width | Top of Head | |
| 5.96mm/.2345″ | Stock | 104.75mm | 3.5mm | 25° x 11/32″ | .060″ | .080″ | 20° Dish | |
