428 pitch drive chains from DID, RK and Regina. The 428 is the chain on the 85s and the big wheel minis.
Standard (non O ring) chains are lighter and cheaper and suit motocross. O ring and X ring chains keep their lube sealed in and last two to three times longer, which is what you want on an enduro or trail bike.
Chains come in 120 links; cut to the length on your swingarm sticker and fit the sprockets at the same time. Members pay the member price on every product in the store and get free standard shipping on orders over $10. Membership is $5 for the first month.
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The YZ85, KTM 85 SX, Husqvarna TC 85, Kawasaki KX85 and KX112, Suzuki RM85, and trail bikes like the TTR125 and CRF125F. Check the stamping on your current chain's side plate if you are not sure.
Full size motocross bikes run 114 to 118 links, enduro bikes a little more, minis fewer. A 120 link chain cut down fits anything full size. The manual or the swingarm sticker gives the number.
Standard for motocross: lighter, less drag, cheap to replace every few months. O ring or X ring for enduro, trail and anything that sees water, where it lasts far longer and needs less care.
Not sure what fits? Set your bike at the top of the store and every list narrows to parts with confirmed fitment, or message us with your model and year.