Engines and Components› Camshafts and Valvetrain

Manley Performance

Manley VALVE-GEN II 42mm ST

$832.52

SKU: M004 11275-8

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The Manley 11275-8 exhaust valves are 42mm Max Head Custom Gen II XtremeAlloy valves, designed for performance and custom applications. They feature a max length of 146.0mm and a stem diameter of 8.0mm. This set includes 8 exhaust valves.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandManley Performance
Part NumberM004 11275-8

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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