Gates G-Force CVT Kevlar High Performance Drive Belt 6G3596 Replaces OEM part numbers: 5B4-17641-00-00. Size: 1 1/4" x 37 1/8" Outside Circumference (in): 37.125; Outside Circumference (mm): 943; Top Width (in): 1.25; Top Width (mm): 32 Gates G-Force Belts are the First of a New Generation of Continuously Variable Transmission (CVT) Belts Identical to OEM, G-Force belts are constructed with double or single cog designs to match the OEM belt