Re: Newbie Just saw a motorized mountain bike!
hill climbing is all in the drivetrain and tuning with these little china engines. a tuned pipe never hurts anything. you have a few options for drivetrain. the kits usally come with a 44t rear sprocket. you can get a larger sprocket for better climb, but you will give up some speed. another option is a shift kit, which allows the bicycle's gears to act as a drivetrain for the engine. i am not sure how good the shift kit is for off-roading, but you can always piece together a do-it-yourself'er with a higher horsepower engine, such as a briggs, predator, morini, or the like.