Gates G-Force 41G4651 Drive Belt Replaces Polaris OEM# 3211070. Product Features: Material: Bottom Fabric; OE Nominal Comparison: OE Quality; Outside Circumference (cm): 47.625; Outside Circumference (mm): 1210; Top Width (cm): 1.406; Top Width (mm): 36. G-Force belts are the first of a new generation of continuously variable drive belts (CVT). Designed with Finite Element Analysis (FEA) techniques, the latest construction, materials and measurement technology G-Force drive belts are designed for superior fit, performance and durability for today's recreational and utility equipment. Identical to OEM, G-Force belts are manufactured with double or single cog designs to match the OEM belt. Extreme testing, in controlled environments and in racing vehicles, has shown that the G-Force belt is high performance and durable, with no need for clutch adjustments in installation.