ALPINESTARS Nucleon KR-1 Cell Back Protector - Red/Black - Medium 6504520-009-M Center Drive Shaft Bearing Assembly 5" thread diameters

5" thread diameters

Open-cell polyurethane foam

Complete kit to rebuild OEM carburetors

Can be fitted with the stock exhaust and Leo Vince slip-on

2007-2011 Yamaha WR 450 F - Notes: 2007-2010Must use YZ250F/450F '06-'09 shrouds

ALPINESTARS Nucleon KR-1 Cell Back Protector - Red/Black - Medium 6504520-009-M Center Drive Shaft Bearing Assembly 5" thread diametersCell Technology back protector is constructed from a high performance polymeric material blend for optimized flexibility and excellent weight saving properties Developed in three waist to shoulder dimensions in order to cover all body sizes Extended lower back protector offers more protection to the rider Highly perforated for maximum breathability and ventilation Horizontal flexion grooves for an adaptive fit in different riding positions Adjustable