LTR450 LTR 450 LT-R450 100mm Big Bore Kit 493 Cylinder Top End Redo Re – BPRATV
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
Honda Cbr 300 Big Bore And Head Package Kit | eBay