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Message: [QUOTE="adam728, post: 1131438, member: 55463"] If you ask ten people you'll get 10 different opinions. There is no solid, absolute, right answer. My personal method. [list][*]Start bike and let it warm up till the tops of the radiators are quite warm (around 5 minutes). Mixture of idle and blipping the throttle, no big time reving. [*]Let bike cool, at least 1 hour, usually 2+ hours. [*]Repeat the two steps above. [*]Go ride, take it fairly easy. "Easy" doesn't mean lugging around in 6th gear at 1 mph. Use the entire rpm range, and even short bursts of full throttle are ok as well. Just no lining up and drag racing up a 1/4 mile long sand hill. [*]I like to ride for 20 minutes or so, then let the bike cool completly again and repeat. After that, it's broken in. [/list] The heat cycling at the top of the list is quite important. As the engine is thermocycled many things change, seals improve, bearing surfaces are broken in, piston/cylinder are stress releaved a bit. An engine that was jetted great may run lean during the first run cycle because of the above changes that take place. So if you are one of those "jump on it and let it rip" guys you stand a far greater chance of skuffing a cylinder. [/QUOTE]