As part of their continuing quality improvement program the RK Chain Factory has made a running production upgrade to their bestselling XSO chain line. The XSO chains feature RK's proprietary RX-Ring seal design. Viewed in cross-section the RK RX-Ring has two contact lips and one lubrication pool versus the single seal point/pool design of a regular O-ring chain. RK's XSO chains offer quality performance and unbeatable value for all but the most demanding high-performance application. Tensile Strength: 7200 Nm Weight: 1.2 KG Max CC Rating: 400cc Street / 350cc Dirt Master Link Type: CLIP Chain Length: 126 Fits: Honda XR185 1979 Kawasaki D TRACKER 125 2011 Yamaha AG200 (KICK START) 1984-1994 YZ85L Big Wheel 2002-2021