KX85 Big Wheel 428 conversion 555.13 462.51 428D130 (SKK055) S3-Cat-Helmets-AutoRacing Artrax disc rotors are all

Artrax disc rotors are all precision laser cut from premium Japanese induction hardened stainless steel

It is suitable for a variety of street and dual-sport applications using 17-inch spoked rims

Rear sprocket features a 44-tooth count designed for comfortable cruising speeds and road use

Pre-gapped to 1

KX85 Big Wheel 428 conversion 555.13 462.51 428D130 (SKK055) S3-Cat-Helmets-AutoRacing Artrax disc rotors are allThis specialised 428 conversion kit is designed to improve the drivetrain durability of the KX85 Big Wheel. By moving to a larger chain size, junior racers gain increased strength and a longer component lifespan under competitive racing conditions. Upgrades the standard drive system to a more robust 428 pitch chain for better resistance to stretching and breakage. Includes a 51 tooth rear sprocket and 13 tooth front sprocket specifically configured