Springs, Valves & Retainers

Fits Models 99 Onwards
Set of high lift valve springs with steel retainers for use with Extreme high lift cams.
Seat pressure 45lb

EXT-10009 Hayabusa H/Duty Valve Spring & Steel Retainer Kit

These short valve guides are precision machined with the bores finished to size. They are designed to fit lower in the head to clear high lift cams.
EXT-10033 Short Valve Guides

Extreme Hayabusa race valves are stronger and cheaper than genuine valves. Both inlet and exhaust valves are from a one piece forging made from 1.4482 valve steel and plasma nitrided. These valves are available in standard and oversize please call us for details.

Other make and models are available please call us for more details.

EXT-10027 Hayabusa Race Valve Set

Extreme Hayabusa race valves are stronger and cheaper than genuine valves. Both inlet and exhaust valves are from a one piece forging made from 1.4482 valve steel and plasma nitrided. These valves are available in standard and oversize please call us for details.
Other make and models are available please call us for more details.
EXT-10028 Hayabusa Race Big Valve Set + 1mm Exhaust & Inlet

High tensile replacement bolt set.
Extra strength bolts to prevent thread stretching.
As on OEM bolts.
EXT-10019B Hayabusa Cam Cap Bolt Set