SAND STORM BELT Fitment: 2017-2019 X3 172 hp 2016-2019 HD10/HD8 2018-2019 Sport / Trail 1000 / 800 All Models OEM # 422280651 / 417300383 / 422280654 Features -Manufacturing, quality control certifications ?? ISO-14001, ISO-9001, and TS16949. -Heavy-duty, high-twist aramid fiber cord for HIGH HORSEPOWER TENSILE LOAD requirements. -Increased TOP COG pressure load design that increases sidewall rigidity, prevents top cog bowing, but allows for increased top cog rotational flexibility. -Bottom Cog uses HIGH MODULOUS RUBBER COMPOUND for better heat resistance and heat dissipation. -Bottom Cog/Tooth design is impregnated with small aramid fibers for better belt-to-sheave adhesion and reduced overall belt temperature. -Precision ground sidewall angle (SCUFFING) for smooth engagement, increased power transfer and lower operating belt temperature. -Aramid fiber cord, versus polyester, wraps over bottom cogs for stronger bottom cog strength. -Latest bottom cog design for greater rotational efficiency Increased cord pop-out resistance.