I have just installed a 2.2 mm stroker crank and 61mm big bore in my wifes 150. I have 12 gram sldiers, mrp exhaust, koso clutch, 39 tooth axle sprocket, performance cdi, k&n air filter. it pulled me and a customer about my same size 40mph at 9200rpm, and also pulled up a hill good to.
all of that would run around 400-500.00.
you can do just some simple cvt, exhaust and air intake mods and get some good power from it
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