Yamaha Shouldered Fork Guard Bolt. Forged from High Carbon steel, these class 10.9 Hardened bolts were engineered by fast metric in conjunction with top mechanics and racers. Designed to be a big upgrade from OEM. Replaces Yamaha part# 90109-06232-00 Note: On models equipped with the steel inserts on the fork guards remember to remove them prior to using these updated fork guard bolts.