Ari Henning - Ride a CBR300R, CB300F, CB300R, Rebel 300, or a Grom, Monkey or CRF250L with a 300 engine swap? You can go from 286cc and a paltry 10.7:1 compression ratio
76mm Motorcycle Cylinder Piston Kit for Honda CBR300 CBR 300 R CB300R CB300F | eBay
Honda Cbr 300 Big Bore And Head Package Kit | eBay