Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift - 221439-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Chrysler Hemi 6.4L NexTek Series High Performance Valve Springs .650 Max Lift - Single - 221439-1

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Circle Track Roller Polished NexTek Series Valve Springs - 221441P-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Dodge SRT-4 .500in Valve Spring and Retainer Kit (w/o Valve Locks) (16 each) - 26190

Manley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and...

Manley Dodge SRT-4 16pc Titanium Retainers - 23190-16

Upgrade your valve train with Manley Performance Titanium Retainers and other lightweight titanium options designed specifically for high-revving sport compact engines. Machined from aerospace-grade...

Manley Dodge SRT-4 16pc Valve Springs - 22190-16

Engineered for today’s high-revving sport compact engines, Manley valve springs deliver exceptional durability, precise control, and consistent performance. Manufactured from premium alloys and...

Manley Drag Race NexTek Series 1.677in Dia .800in lift High Performance Valve Springs (Set of 16) - 221447-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Drag Race NexTek Series 1.677in Dia .900in lift High Performance Valve Springs (Set of 16) - 221448-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Ford / Mazda 2.3L Valve Spring and Retainer Kit (w/o Valve Locks) - 26200

Manley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and...

Manley Ford 4.6L/5.4L DOHC NexTek Series High Performance Valve Springs (4 valves per cylinder) - 221434-32

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Ford 4.6L/5.4L SOHC NexTek Series High Performance Valve Springs (2 valves per cylinder) - 221437-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...

Manley Ford 4.6L/5.4L SOHC NexTek Series Street/Strip 1.125 Valve Springs (2 valves per cylinder - 221427-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most...