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This complete overhaul kit provides everything you need to restore your YFZ450R to peak condition
Replaces Honda OEM Part #s: 90031-MEB-670
and wrist pin—everything you need for installation
Kibblewhite RED Viton top-hat valve stem seals
20-22 Yamaha YZ125X YZ 125X 58mm 144 Athena Big Bore Cylinder Top End Piston Kit RMZ450 This complete overhaul kit providesAthena 58mm 144cc Big Bore Cylinder Top End Kit! This is the best and most reliable big bore kit on the market & NO ONE SELLS IT FOR LESS! Fits Yamaha YZ125X 2 Stroke Dirt Bikes Years 2020 2021 2022 This kit includes: 58mm 144cc Nikasil Athena Big Bore Cylinder Athena 58mm Coated Piston Kit (Includes, Piston, Pin, Rings & Clips) Athena Complete Top End Gasket Set Athena Head Athena Head Stud Kit All parts come with warranty. BPRATV The Best Parts. The