I dont want toget off topic. There "4tec's" are not built to oem specs. The factory one blew up but itll be ok with inferior parts :ack:. If you research the 4tec history youll see the changes Rotax did to the 4-tec over the year youll also find out about there flaws and why its bad to use inferior parts. Ive heard from most people that sbt does back there product but your still better off buying a low hr used motor for the same price.