Can anyone tell me the rear wheel weight of a late YZ450F? I weighed the back wheel on my 07 WR450F and it weighs 13.1 kilos or 29 pounds!! Thats alot of weight. I have a spare 19' wheel with not tyre and I might get a tyre and use it if theres a bit weight difference. My wheel has a steel sproket and 1 rims lock fyi. Thanks.