Review I'm motorcycle racer and also a engine mechanic for 13 years

I started racing since 2006, Im a circuit and dragracer and also a motorcycle mechanic. I'm a rider mechanic in many company, kymco, mcx, Team 4s1m, Team Trf, etc. I know about carburator and Fi engines, since it was our racebike when i was young. I can do engine maintenance and engine upgrades.