DID - 520 ERVT Chain New upgrade to the DID 520VT2 Chain New 520 ERVT breaks down the concept of the original motocross chain (non-O-Ring) and adds the benefits of an x-ring More lightweight and longer chain life By adjusting the materials, the 520ERVT is now 2% lighter and has a 15% longer lifespan, all while maintaining the tensile strength The clear choice of Top AMA teams. AMA riders rely on the 520 ERVT to achieve their success! Compare:Pin Length: 18.7mm (both 520ERVT & 520VT2)Roller Diameter: 10.16mm(both 520ERVT &520VT2)Plate Thickness Inner: 1.8(520ERVT), 2.0 ((520VT2)Plate Thickness Outer: 2.0(both 520ERVT &520VT2)Weight: 1.46kg(520ERVT), 1.49kg(520VT2)Tensile Strength: 37.5KN(both 520ERVT &520VT2)Seal Type: X-Ring(both 520ERVT &520VT2)Wear Resist: 3.500(520ERVT), 3.060(520VT2)Connecting Link: Rivet optional, Press & Clip included(both 520ERVT &520VT2) Fits: BETA RR200 2T RACING 2021 RR250 2T 2020-2021 RR300 2T 2013-2021 RR300 Racing 2T 2017-2021 Beta RR 2T 200 2023 RR 2T 250 2023 RR 2T 300 2023 Husaberg 450FS E SUPERMOTO 2005-2008 FE350 2013-2014 FE390 2010-2012 FE450 2009 TE125 2012-2013 TE250 2011-2013 TE300 2011-2013 Husqvarna FC350 2014-2015 FC450 2014-2015 FE250 2014-2018 FE350 2014-2016 FE501 2014-2016 TE125 2014-2016 TE250 2014-2016 TE300 2014-2016 TX125 2018-2019 KTM 200 EXC 2010 360 EXC 1996-1997 360 SX 1996-1997 400 EXC-RACING 2001-2007 400 SX 2000-2002 500 EXC 2012-2013