6336 - GP460 / GP470 FAT BOY Reed Crankcase - Goped Modified piston

Modified piston

Case halves need to be sealed with a quality sealant such as threebond 1211

Our CNC machine has allowed us to take our porting to the next level due to us being able to do cylinder work that is not possible to do by hand

Transfer port/skavenging covers

You will see an instant performance gain by simply removing your V1 reed and installing the V2

6336 - GP460 / GP470 FAT BOY Reed Crankcase - Goped Modified pistonComplete OBR reed crankcase for the GP460 and GP470 engines with vented billet clutch housing. A case reed ported top end is highly recommended. We've designed our reed case for dual boost ports. Cases come with complete with carbon fiber reed petals, nachi bearings, seals, hardware and a reed cage gaskets. Case halves need to be sealed with a quality sealant such as threebond 1211. A carb isolator is also included to prevent the case from