Manley Spring Cup .567in Locator ID 1.535in Locator OD 0.062in Thickness - for Manley 221432/221441P - 42426-16

Manley Performance Valve Spring Cups provide a precision-machined, durable foundation for valve springs while protecting the cylinder head from spring wear. Manufactured from premium materials and...

Manley Spring Cup .570in Locator ID 1.270in Locator OD 0.062in Thickness - for Manley 221436 - 42124-16

Manley Performance Valve Spring Cups provide a precision-machined, durable foundation for valve springs while protecting the cylinder head from spring wear. Manufactured from premium materials and...

Manley Spring Cup .635in ID 1.535in OD Valve Spring Locator (For 221420/55/56/57/60/61) - 42344-16

Manley Performance Valve Spring Cups provide a precision-machined, durable foundation for valve springs while protecting the cylinder head from spring wear. Manufactured from premium materials and...

Manley Spring Cup 0.440in Locator ID 1.080in Locator OD 0.045in Thickness - for Manley 221419 - 42153-32

Manley Performance Valve Spring Cups provide a precision-machined, durable foundation for valve springs while protecting the cylinder head from spring wear. Manufactured from premium materials and...

Manley Spring Cup 1.677in Spring OD 1.750in Cup OD .570in Cup ID - 42372-16

Manley Performance Valve Spring Cups provide a precision-machined, durable foundation for valve springs while protecting the cylinder head from spring wear. Manufactured from premium materials and...

Manley Springs Single Hemi - 221431-16

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 Springs Single Hemi Drag Pak - 221431X-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 Street Master 16pc Valve Springs - 1.437 OD/.720 ID - 22408-16

The Manley Street Master series delivers upgraded valve springs and components designed specifically for street-driven performance builds. Made from high-tensile chrome silicon steel with precision...

Manley Subaru WRX/STi (1.050/.755) 16pc Titanium Retainers (for use with 22180-16 Springs) - 23180-16

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 Subaru WRX/STi (1.80/.870) 16pc Titanium Retainers (for use with 22185-16 Springs which ar - 23185-16

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 Subaru WRX/STI (EJ20/EJ25) 16pc Valve Springs (1.126/.640) (For use w/ 23185-16 Retainers) - 22185-16

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 Subaru WRX/STI (EJ20/EJ25) Valve Springs (1.126/.640) *ONE SPRING*16.35 - 22185-1

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...