Polisport chain sliders are perfect replicas of the OEM stock parts produced in TPU (Thermoplastic polyurethane) to better withstand the friction and abrasion from your bike's chain. Our chain sliders are produced to be durable and to perfectly fit your dirt bike. Available for Beta RR 2T/4T in black and red colors. Fits: BETA RR125 2T 2019 RR200 2T 2019 RR250 2T 2010-2019 RR250 Racing 2T 2017-2019 RR300 2T 2013-2019 RR300 Racing 2T 2017-2019 RR350 4T 2010-2014 2016-2019 RR350 Racing 4T 2017-2019 RR390 4T 2015-2019 RR400 4T 2010-2014 RR430 4T 2015-2019 RR430 Racing 4T 2017-2018 RR450 4T 2010-2014 RR450 4T CROSS COUNTRY 2012-2013 RR480 4T 2015-2019 RR480 Racing 4T 2017-2019 RR498 4T 2010 2012-2014 RR520 4T 2010-2011