Continental® Dual Hi-Performance Pd® or Positive Drive® timing belts can replace two or more single-sided synchronous belts. less space is needed. Formally know as Goodyear EP trademark line of trapezoidal tooth profile synchronous belts. These belts were the first profile types developed. This timing belt product line section includes a stock selection of XL, L, H, and Metric T pitches. However time and technological advances have led to more advanced product lines such as Super Torque, Eagle NRG Silentsync, Falcon HTC, Hawk Pd® , Blackhawk Pd. Check out our Pulley sectionand Contact Us if you have any questions. See QD required bushing for sprocket sold seprately if applicable.