Part No. RHKCG04-B CNC machined from 6061-T6 aluminium. Fitted with long wear life plastic chain guide insert. Replacement chain guide inserts available. Available for a wide model range. Strong and durable. Fitment. Yamaha YZ 125 2008-2022 Yamaha YZ 125 X 2020-2022 Yamaha WR 450 FSP Aussie Edition 2021 Yamaha YZ 250 2008-2022 Yamaha YZ 250 X 2016-2022 Yamaha YZ 250 F 2007-2022 Yamaha YZ 250 FX 2015-2022 Yamaha YZ 450 F 2007-2022 Yamaha YZ 450 FX 2016-2022 Yamaha WR 250 F 2007-2022 Yamaha WR 450 F 2007-2022