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View Full Version : Atc70 sprockets and chain question



3wheelers
11-28-2014, 07:17 PM
Hi, I have an atc70. I'm going to put a lifan 125 engine on it. Does anyone know how many teeth the sprockets on the lifan 125's have? The stock 70cc engine has a 14t sprocket I beleive. I'm wanting to go bigger than that with my lifan 125. Will a 15t sprocket fit in the lifan 125? Then how do I know what chain to get? Do I have to get a different chain than the stock one? I don't understand the 420-72 chain size stuff. If I run 15t front and 35t rear sprockets with the lifan 125, what chain will I need? Or can I use the stock one?

muddyYT125
11-28-2014, 08:28 PM
Post a link to the exact engine your buying if you're getting it from a website.