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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
250cc 2 stroke engine swap in a 125 Chassis
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[QUOTE="turbooutlaw, post: 764958, member: 53372"] I was wondering if anyone here has ever put a two stroke 250cc motor in a 125cc dirtbike? I am thinking about doing this but I don't know if the motor mounts are the same for both an 88 KX125 and an 88 KX250. I am new to dirtbikes so I don't know much about the differences between the 250 chassis and the 125 chassis. Is the motor the same for both 250cc and 125cc but with a different cylinder, piston, and connecting rod? In other words the bottom half of the motor & trans. So for example, does Honda, Yamaha, Kawasaki, and/or Suzuki use the same bottom half for both 250s and 125s and simply bolt on a 125 or 250 cylinder? Here is another idea: Could you use a 250 cylinder, piston, and connecting rod to replace the 125 motors cylinder, piston, and connecting rod? Any info would be really appreciated. Thanks, Turbooutlaw [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
250cc 2 stroke engine swap in a 125 Chassis
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