150cc, 175cc GY6 Scoot Coupe Engine (Long Case) with Performance Transmission

Guaranteed & Certified 150cc Engine We are the only supplier who disassembles your engine and verifies that it is a 150cc engine.  We have caught China suppliers installing 125cc cylinder and pistons and selling as 150cc.  Buy from any where else and you dont know what you will be receiving.  All the other guys do is slap a label on a box.  Don't be a chump and get suckered.  Get a BDX Performance certified Engine.    Option 1:  Comes with Upgraded Transmission for Better Power Transfer to the Wheels: This is not a stock scooter engine.  We disassemble your engine and install the following components in your engine: 1500 PRM Spring 10 gram rollers installed, 9g, 12g, 14g sent separately Performance variator High stall clutch.  Gates Powerlink Belt You will not find this engine anywhere else. Option 2: 175cc GY6 62mm Big Bore Engine.  We disassemble your engine, bore the case and install a 175cc 62mm big big bore piston and cylinder.  We then reassemble and test your engine.  Th