Carpenter Racing

Carpenter Clutch Modification Lock Ring Suzuki GSX1300R Hayabusa (08-20)

This stock clutch with its lock up mechanism is grabby and chatters.  This makes good launches almost impossible.  Our Clutch Mod Kit uses a billet aluminum - hard anodized ring...

Carpenter Clutch Modification Lock Ring Suzuki Hayabusa (99-07)

This stock clutch with its lock up mechanism is grabby and chatters.  This makes good launches almost impossible.  Our Clutch Mod Kit uses a billet aluminum - hard anodized ring...

Carpenter Ram Air Scoops Suzuki GSX1300R Hayabusa (99-07)

Studies have shown that the ram air design of the 1999-2007 Hayabusa becomes ineffectual at higher speeds. The contours of the nose actually produce negative pressure around the air intakes at...

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 (06-24)

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...

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...

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 (99-24)

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...