Valve Springs

APE Valve Spring and Retainer Kit Honda CBR1000RR (08-16)

  Take your engine's performance to new heights with the renowned APE valve springs, meticulously crafted from premium chrome silicone wire. Celebrated for their unwavering consistency in pressure and exceptional fatigue life, APE valve springs...

APE Valve Spring and Retainer Kit Kawasaki ZX14R (06-25)

A complete valve spring and titanium retainer kit for the Kawasaki ZX14R. The new APE springs feature increased pressures from seat to max lift and approx .100" more travel than the oem springs. More than enough pressure to control the most...

APE Valve Spring Kit Kawasaki KZ900-1000-J-GPZ

World famous Kawasaki APE valve springs are made from premium chrome silicone wire for consistent pressure and excellent fatigue life. Racers as well as street riders have come to depend on APE springs for winning performance. For use with any...

APE Valve Spring Kit Kawasaki ZX-10R (04-24)

  Elevate your Kawasaki ZX-10R's performance with the world-renowned APE valve springs – the choice of champions. Crafted from premium chrome silicon wire, these valve springs deliver consistent pressure and exceptional fatigue life,...

APE Valve Spring Kit Kawasaki ZX12 (00-05)

World famous Kawasaki ZX-12 APE valve springs are made from premium chrome silicone wire for consistent pressure and excellent fatigue life. Racers as well as street riders have come to depend on APE springs for winning performance. For use with...

APE Valve Spring Kit Suzuki GS1100-GS1150

World famous Suzuki GS1100-GS1150 APE valve springs are made from premium chrome silicone wire for consistent pressure and excellent fatigue life. Racers as well as street riders have come to depend on APE springs for winning performance. For use...

APE Valve Spring Kit Suzuki GSX-8R (24-25)

This new APE kit features increased pressures from seat to max lift and an additional .085" more travel than OEM springs. More than enough pressure to control aggressive cam lobe designs. Includes: Valve Springs Titanium Valve Retainers Steel...

APE Valve Spring Kit Suzuki GSXR1000 (01-08)

Nearly a year in development. APE, in partnership with with racing's leading racing spring manufacturer, has introduced the all new spring for the Gixxer. Unique manufacturing process, including multiple stress relieving processes, makes this the best...

APE Valve Spring Kit Suzuki GSXR1000 (09-24)

Experience the culmination of nearly a year of meticulous development – introducing the APE Racing Performance Spring for the Gixxer. Crafted in collaboration with the foremost racing spring manufacturer, this cutting-edge spring is set to...

APE Valve Spring Kit Suzuki Hayabusa (99-25)

World famous Suzuki Hayabusa APE valve springs are made from premium chrome silicon wire for consistent pressure and excellent fatigue life. Racers as well as street riders have come to depend on APE springs for winning performance. For use...

Carpenter Valve Springs Kawasaki ZX10R (04-15)

Carpenter Racing Valve Springs are 60psi on the seat and can handle the largest cams available for the Kawasaki ZX10R. Designed for use with the stock retainers.

Carpenter Valve Springs Kawasaki ZX12 (00-05)

Carpenter Racing Valve Springs are 65psi on the seat and can handle the largest cams available for the Kawasaki ZX12.

Carpenter Valve Springs Kawasaki ZX14R (06-25)

Carpenter Racing Valve Springs are 62psi on the seat and can handle the largest cams available for the Kawasaki ZX14R. Designed for use with the stock retainers. Also works on 2004 - 2015 ZX10R 60lb on the seat.

Carpenter Valve Springs Suzuki GSXR1000 (01-08)

Carpenter Racing Valve Springs are 50psi on the seat without the stock spring base and 60psi with it. They can handle the largest cams available for the Suzuki GSXR1000. Designed for use with the stock retainers.  Used by many engine builders...

Carpenter Valve Springs Suzuki GSXR1000 (09-25)

Carpenter Racing Valve Springs are 60psi on the seat and can handle the largest cams available for the Suzuki GSXR1000. Designed for use with the stock retainers.

Carpenter Valve Springs Suzuki Hayabusa (99-25)

Carpenter Racing Valve Springs are the most popular valve spring for the Suzuki Hayabusa and will work with cams up to .445" lift with stock or aftermarket retainers. The 60psi springs are recommended for nearly all application including all motor...

HTP Valve Spring Kit Suzuki GSXR1000 (17-25)

HTP Performance has released their performance valve spring kit for the Suzuki GSX-R1000 (17+).  These valve springs are designed for Nitrous and Turbo applications, or any application that requires higher spring pressure and the ability to handle...

Vance & Hines Valve Springs Suzuki Hayabusa (99-25)

Vance & Hines Raceshop Components High-Performance Hayabusa Valve Springs are designed with the latest advancements in valve spring technology. Our springs are nano-peened, polished and 100% inspected through load testing to ensure they exceed...