August 5, 20188 yr I own a 2017 beta evo 125 2 t and now feel it needs more power I would like to know if it’s possible to buy a cylinder and piston from a 250cc or 300cc and put that on the engine or get it bored out and where I can get it bored thank you ...p.s. I live in bury manchester
August 5, 20188 yr 2 hours ago, T Gallagher said: I own a 2017 beta evo 125 2 t and now feel it needs more power I would like to know if it’s possible to buy a cylinder and piston from a 250cc or 300cc and put that on the engine or get it bored out and where I can get it bored thank you ...p.s. I live in bury manchester I'm afraid not. The 125 has a shorter stroke so even if the bigger barrel fitted you'd be looking at a new crankshaft, plus carb and CDI unit, possibly flywheel and exhaust header too. The message is, if you want a 250 or 300, buy one. Edited August 5, 20188 yr by cleanorbust
August 5, 20188 yr A big bore kit was available from S3 for the Gas Gas 125 but I have never seen anything for the beta. Someone suggested that it was just a shortened 250 barrel but trying that on a beta would be a project. https://shop-s3.com/gb/cylinders/244-kit-cylinder-piston-gaskets-head-cover-gas-gas-tr-225cc.html?search_query=gas+gas+225&results=2
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