08+ RMZ450 RMZ 450 RM-Z450 Big Bore Kit 100mm OEM Cylinder CP Top End Rebuild
**Cylinder is bored and re-plated by Millennium Technologies. This is a bolt on kit with no machining required. Piston uses pump or race gas. Everything is new in the original packaging and the original manufacturer's warranty applies*
*We recommend that this be installed by a qualified mechanic with experience doing this type of work. Warranty does not cover any failure that is a result of improper installation, improper break in, improper tuning, or misuse. For any warranty to be considered the part(s) in questions must first be sent to us for inspection. We can not warranty anything based on phone calls or photos alone.