& - YAMAHA YZ250FX 2015-2022

kits include the following. size steel front sprocket. size rear sprocket. size - chain. sprockets are manufactured to ..., specs using high grade hardened steel. made from 7075 -6 heat treated . with self-cleaning grooves. match original equipment exactly for perfect fit and size. ORH - chain is best off-road chain for performance and durability. - shape provides an outstanding seal with reduced friction. tensile strength 8,120 lbs.