Graves Slotted Cam Sprockets Yamaha Yxz1000R Graves Slotted Cam Sprockets provide excellent benefits with their heat-treated steel design, allowing for precise cam timing and ultimately enhancing engine performance. These sprockets are particularly suitable for those aiming to construct a race engine. Features: Heat treated steel Allows for precision cam timing Improved engine performance Perfect for a race engine build Sold as a pair Made in the USA