Mine had the 16, changed to 17 which suites me... I think the belt drive is similar to a 17, which I am considering when chain wears out, might try an 18 some time but how fast do ya want to go, I like a few revs now and again with a bit of punch...
05 SM Neon Blue/Black. Thunder Bike Cams & Pipes & Flowed Head. AI&Snork removed, Airbox Mods, 135mains, 42/17T, 140x80x17" TBS Front Wheel
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