Our custom made supermoto sprocket come in the sizes you need for supermoto, not standard MX sizes. Further, our sprockets are hard anodized and designed to take a beating. Offered by SM Factory to our exact specifications. Designed for high speed racing and street riding and weight savings. Offered by Motostrano, using superior quality aerospace 7075-T6 aluminum machined to exact tolerances exceeding American Gear standards, our sprockets are of the highest quality. All sprockets have lightening holes designed for venting and maximum weight savings. Order up the right gearing for the right track or street riding requirements. Stock off-road bikes are geared for good low end speeds. Selecting gearing in the 40-44 range can radically increase your bikes top speed for fast tracks and freeway riding.  Order ultra light for a more vented sprocket, hard anodized for a longer lasting sprocket and color anodized for a unique finish. Please specify your specific bike during check-out. Only Motostrano stocks supermoto specialized sprockets. Sizes 37, 38, 39, 40, 41, 42, 43, 44 and 45 tooth sprockets.