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

Dakota Digital Gauge, MDX System, 1995-98 Chevy Pickup, Black Alloy Style Face, White Display, Custom

Dakota Digital Gauge, MDX System, 1995-98 Chevy Pickup, Black Alloy Style Face, White Display, Custom

$1,968.40

MANLEY Valve, Titanium, Intake, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.24 in. Length, Set of 8

MANLEY Valve, Titanium, Intake, 2.15 in. Head Dia, 0.3415 in. Stem Dia, 5.24 in. Length, Set of 8

$2,421.90

Motive Gear Differential Bearing Kit, Koyo, For CHEVROLET SILVERADO 1500 2014–2018, Kit

Motive Gear Differential Bearing Kit, Koyo, For CHEVROLET SILVERADO 1500 2014–2018, Kit

$268.37

Simpson Latch-Type Shoulder Harnesses 30005BL Harness, Shoulder Belts, Latch, V-Type, Bolt-In, Floor/Roll Bar Mount, Blue, Each

Simpson Latch-Type Shoulder Harnesses 30005BL Harness, Shoulder Belts, Latch, V-Type, Bolt-In, Floor/Roll Bar Mount, Blue, Each

$123.57

DBA Front 4000 Series T3 Brake Rotor, 340mm, For Ford Territory Turbo AWD, Kit

DBA Front 4000 Series T3 Brake Rotor, 340mm, For Ford Territory Turbo AWD, Kit

$361.20