Chain Kit parts packaged with drive chain, engine sprocket, rear sprocket and other replacement parts (Engine Sprocket Washer, Rear Sprocket Nuts and Cotter Pin etc.). This package from Kawasaki contains genuine parts required for correct drive chain replacement,Please note that Kawasaki cannot assume any responsibility for damage resulting from incorrect installation,Dealer installation recommended,Drive Chain Kit Component Parts IncludedPIN-COTTER, 4.0 35 550AA4035 1 For Rear Axle,SPROCKET-HUB, 41T 42041-0162 1 Rear Sprocket,NUT, LOCK, FLANGED, 10 MM 92210-1139 6 For Rear Sprocket Installation,CHAIN, DRIVE, EK520SR-O2 106L 92057-0019 1,SPROCKET-OUTPUT, 14T 13144-0577 1 Engine Sprocket,WASHER 92200-1932 1 For Engine Sprocket Compatible Models: NINJA 400 ABS 2022,2019,2021,2018,2020 | NINJA 400 2022,2018,2019,2020,2021 | Z400 ABS 2019,2020,2021 | NINJA 400 ABS/KRT Edition 2018 Compatible Models: NINJA 400 ABS 2022,2019,2021,2018,2020 | NINJA 400 2022,2018,2019,2020,2021 | Z400 ABS 2019,2020,2021 | NINJA 400 ABS/KRT Edition 2018