There are so many choices. The motor is the only part of the drivetrain I have so far. My thought, right now, is to use a BDL primary, a primo clutch, and mate it all to a baker 6n4. If any of you guys have had great success with other setups, I'd like to know. What about pulley sizes? I'm only 160 pounds and might need the advantage of easier kicking. I've owned stock shovels that kick and never had any problems., there. The motor is the low compression model without compression releases. These scooters have lots of parts , I don't want to buy them more than once. Thanks gang. Sweet T