i believe thats like an old yz 125 motor, from 81 maybe, or a 175 yamy
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Lets see here, T-5s ported out for better flow, RAM air K&N filter up front, removed the valves, new kickstarter, big bore 326 piston with 16:1 compression (need to run fighter jet fuel) 57mm pwk with 700 mains and a 300 shot of N2O, i call it the MJ Ex eater!
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