ALL BALLS Krukaslager & keerringset The RS-12 with its built-in

The RS-12 with its built-in resonance chamber

screws & cushions

as delivered from the factory

our new RS-12 Signature Series exhaust system is the best exhaust system for the YZ450F hands down

without any kind of flex during use

ALL BALLS Krukaslager & keerringset The RS-12 with its built-inAll Balls Bearing + Crankshaft Key kits allow you to rebuild your crankshaft for reliability and performance. Set with bearings + crankshaft key Contains the bearings and gaskets required for the application Bearings are treated to minimize friction as much as possible Product developed for competition use in the USA Dimensions equivalent to the original