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Graves Motorsports Yamaha R1 Slotted Cam Sprockets for the all new 2015-2019 models. Graves Motorsports Slotted Cam Sprockets allow for precise cam timing to achieve maximum performance. A must-have if you plan to improve motor performance. Works with stock camshafts only (Note: you must press off the of stock cam shaft sprockets to remove them).
The cam sprocket is a 8620 steel that is carburized to a 58-62 Rockwell (C scale)
The adapter is a 17-4 heat treated steel that is treated to a H900 spec., which is a 58-62 Rockwell (C scale)
The Bolts are made from a proprietary material that is similar to an 8140 chromoly with increased tensile strength from
190KSI to 220KSI, the threads are rolled after
Heat treating to increase the fatigue strength by 10 times, it comes with a T30 torx head for maximum torque strength