Upgrade your GM LS-Series exhaust system with the high-performance LS1 E/D 1.575 Exhaust Valve by MANLEY. This Extreme Duty valve boasts a 1.575-inch head, 0.3136-inch valve stem, and durable stainless steel construction to enhance your engine's power...

Exhaust Valve - Extreme Duty - 1.575 in Head - 0.3136 in Valve Stem - 4.923 in Long - Stainless - GM LS-Series - Set of 8

Intake Valve - Race Flo - 2.000 in Head - 0.313 in Valve Stem - 4.874 in Long - Stainless - LS1 / LS2 - GM LS-Series - Each

Intake Valve - Race Series - 2.000 in Head - 0.313 in Valve Stem - 4.874 in Long - Stainless - GM LS-Series - Set of 8

Intake Valve - Race Series - 2.165 in Head - 0.313 in Valve Stem - 4.900 in Long - Stainless - GM LS-Series - Set of 8

Exhaust Valve - Race Master - 1.550 in Head - 0.314 in Valve Stem - 4.923 in Long - Stainless - LS1 / LS2 - GM LS-Series - Set of 8