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: BETA RR450 4T 2010-2014 GasGas EC125 2007 2009 2011 EC250 2001-2011 EC300 2015-2017 Honda CR125R 1982-1983 1997 Husqvarna CR125 2010-2012 TE250 2010-2013 WR250 2010-2012 WR300 2009-2012 Kawasaki KLX400R 2003 Suzuki DR200 1986-1991 DR200SE 2008-2011 2015 DRZ400E 2000-2019 DRZ400S 2006-2013 Yamaha WR250Z 1998 YZ125 1997-2016 YZ250F 2001-2009