Okay, I have the parts to reassemle my moto 100cc...and yes the 80cc rear end is a match for my atv. All I had to do was remove the 3 bolt hubs and replace with the 4 bolt pattern, simple as they are splined and interchangeable. Can someone tell me what kind of grease to use in this rear end. It is sealed, so it is lubed on reassembly and none thereafter....no dipstick on this model. Will any good axle grease work?