BAD ASS Worlds Best Belt (WB). This belt is for the rider/racer that is looking for the ultimate in belt technology and proven performance. This belt acts like the OEM belt in terms of engagement and operating RPMs. Race Proven Performance. 3rd Generation heavy-duty, high-twist Aramid Fiber cord for HIGH HORSEPOWER TENSIL LOAD requirements. Making it the strongest belt on the market, surpassing even our EX and Standstorm lines. Has the highest shock load rating to date being able to withstand the power of 400hp machnies. Increased top cog pressure load design that increases sidewall rigidity, prevents top cog bowing, but still allows for increased rotational flexibility. Bottom Cog uses HIGH MODULOUS RUBBER COMPOUND (BZX 1) for better heat resistance and heat dissipation. Latest bottom cog design for greater rotational efficiency at full shift. 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 increased bottom cog strength.