Brand New CZ MXG Non O-Ring Chain. You will receive 1 420-120L MXG Non O-Ring chain to replace the chain on the following: 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 Yamaha TT-R50. Average tensile strength in excess of 4946 lbs. All MX chains include a clip style masterlink and may need to be cut to length. CZ Chains are produced in the Czech Republic using the highest quality products available with German Engineering and Austrian steel. CZ Chain has minimal stretch due to KSJ bush production technology and ISO/TS Standards. Race-Driven is committed to bringing the highest quality products to all riders at an affordable price. Customer Driven – Quality Driven – Race-Driven