Bad Ass Belt Line Ultra-strong Aramid Fiber cord that can handle/carry more than 10,000 pounds of tension without stretching or breaking. Higher strength compared to OEM and aftermarket drive belts. Bad Ass belts have been developed with a high-temperature compound called DUMAX for added strength, flexibility, and heat resistance which in turn means you can squeeze our belts a lot harder for more tuning possibilities and less slippage. Maximum under-cord stiffness allows the belt to flex for rotational efficiency and running cooler temperatures Built for high temps, extreme abuse, and excessive shock load.