Manley Extreme Duty Series performance steel valves are a great choice for supercharged, alcohol-burning, or high-revving engines. These engines generate a lot of heat and require special valves that can handle that kind of punishment. All valves are made from the best stainless steel available, with chrome stems and hardened valve tips. Extreme Duty Series valves are swirl-polished and fully machined and available with either undercut heads or straight stems.

More From This Category

AFR Intake Valve, SBF 8MM Stainless Steel 1.900 X 4.900 O.A.L. Stud Mount Race, 1 Ea.

AFR Intake Valve, SBF 8MM Stainless Steel 1.900 X 4.900 O.A.L. Stud Mount Race, 1 Ea.

$40.91

AFR Exhaust Valve, BBF 11/32” Stainless Steel 1.760 X 5.050 O.A.L. Race, Set

AFR Exhaust Valve, BBF 11/32” Stainless Steel 1.760 X 5.050 O.A.L. Race, Set

$458.69

AFR Intake Valve, BBF 11/32” Stainless Steel 2.300 X 5.245 O.A.L. Race, Set

AFR Intake Valve, BBF 11/32” Stainless Steel 2.300 X 5.245 O.A.L. Race, Set

$458.69

AFR Intake Valve, SBF 8MM Stainless Steel 1.900 X 5.080 O.A.L. Pedestal Race, Ea.

AFR Intake Valve, SBF 8MM Stainless Steel 1.900 X 5.080 O.A.L. Pedestal Race, Ea.

$40.91