AS3 PERFORMANCE CHAIN GUIDE GREEN to fit KAWASAKI KX KXF KX-F 450 2019-2020. AS3 Performance Chain Guide for Kawasaki KX 250, KX 450. AS3 Performance chain guides have a CNC machined aluminium mounting bracket that provides a firm fixing to the swing arm and the lower part is made from strong, hard wearing plastic which will flex on impact but not bend, giving your rear sprocket maximum protection while keeping the chain running in line.
