These camshafts are factory Suzuki cams.  These can be used as a factory replacement part for the 99-07 Hayabusa on the intake side of the cylinder head or used on the exhuast side to make extra power without going over your budget.  These cams will also work on the 08-11 Hayabusa's as well but only on the (Exhuast Side) due to the cam pin.

****This cam is also used on the popular dual intake mod****

99-07 GSX1300R -  Fits IN & EX Side

08-11 GSX1300R - Fits EX Side Only