The K5 sintered compound is optimal for off-road dirt bikes and ATV. It is recommended for riders who demand great off-road stopping power and brake pad durability when riding on tough off-road terrain. Fits: CF Moto CF500 CLASSIC 2012-2016 X400 2015-2017 X400 LE 2015-2017 X5 Terralander 500 2011-2016 X500 2012-2016 X500 EPS 2017-2018 X500 FARM SPEC 2015-2018 X550 EPS 2015-2019 X6 Terralander 2011-2012 X6 Terralander EFI 2013-2014