Flexible, high-performance materials enable grab-and-go mobility and responsive acceleration | Double- or single-cog designs to match the OEM belt with advanced trapezoid top notch and rounded cog design to maximize heat dissipation and flexibility | Advanced aramid tensile cords and reinforced fiber-loaded undercord for durability and dependability | Viability testing matches OE belt shift curves and pulley speed ratios for excellent performance at a reduced cost | Tested under extreme conditions in controlled environments as well as on race vehicles