DescriptionRK CHAIN 420MXU2 – 136 LINK – GOLD (U-RING)SEALED ‘UW’ RING CHAINRK MX U-ring racing chain features RK’s new ultra slim UW-rings and is designed to deliver consistent power delivery as well as increased chain life.It is also one of the lightest sealed ring motocross race chains available on the market, and all components are heat treated using RK’s exclusive HIT (Heat Induction Transfer) process.
