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Manley Extreme Duty exhaust valves are engineered for applications that demand exceptional heat and force resistance, including small-block Chevy V8 builds. Constructed from XH-432 XtremeAlloy with chrome stems and hard tips, these valves feature swirl-polished under-head areas and fully machined combustion faces to improve flow and combustion efficiency. They’re intended for heavy-duty racing, marine or restricted competition environments.
Manley Extreme Duty Stainless Steel Exhaust Valves Small Block Chevy V8 1.600 - Set of 8
