DID Motocross Chain - Made in Japan Don't settle for anything less. Used by Ryan Villopoto to win 4 AMA SX titles All D.I.D 'ER' chains are designed exclusively for racing. 520ERT3 is used by the top factory SX and MX Teams to win races. 520MX chain has higher tensile strength for maximum performance and is ideal for muddy and sandy conditions. 520VT2 for offroad applications where a sealed chain is preferred, D.I.D's 520VT2 X-Ring chain provides excellent low friction high performance. D.I.D's exclusive SDH pin treatment is featured on the 520ERT2, 520 MX, 520DZ and all NZ Series chains. Fits: Honda CRF100F 2004-2014 CRF125F 2014-2023 CRF125FB 2014-2022 CRF150F 2003 MSX125 Grom 2015-2018 2020 Kawasaki KX65 2010 Suzuki DS80 1998