This is definately lask of power.. It may be stating the obvious but when we were back in the trails trying to ride it back to the truck it would struggle big time going up maybe a 40 foot hill at maybe a 45 degree angle.. About three quarters the way up it was just too much and it killed it.. Stalled I guess. Not sure if this helps. Regardless, first thing is first I am going by the owners manual this weekend and cleaning/adjusting EVERYTHING on the bike to rule out any issues.. ir filter, carb, plug, throttle.. Then i guess ill dig in deeper if I dont find anything.