2011 Yamaha Yfz 450R, About this super clean Yamaha YFZ 450r. It has a Curtis sparks 480 big bore kit 13.8:1 cp, Comp builder series cams, the head is ported and polished, CV4 high lift valve springs and retainers,and FCI high flow intake. For exhaust the headpipe is a FMF mega bomb matted to a Trinity racing stage 4 tailpipe. It has a Dynatech programmer with a custom tune. This quad is an absolute beast. This quad has never been raced, wrecked, or submerged in deep water. The oil has been changed every ten hours as well as the a arm bushings being greased. The new top end only has ten hours on it. All OEM parts go with it. 6500 obo $6,500.00