AS3 Performance 7075 aluminium rear sprockets are crafted by a world - leading sprocket maker. They've been rigorously tested by top riders on the world's toughest tracks. These sprockets are super lightweight yet durable, made from high - quality 7075 - T6 aluminium using CNC machining. Each tooth has self - cleaning grooves, and they sport a smooth anodised finish with AS3 Performance branding. With 48 teeth, they fit 2021 Rieju MR 300 Racing, Pro, and Ranger models. Key features include being CNC machined from 7075 - T6 aluminium, designed for max strength with min weight, over 50% lighter than standard OEM steel sprockets, self - cleaning grooves, polished anodised finish with branding, made by a leading manufacturer, tested on tough sand tracks, backed by a UK company with a 12 - month warranty, and the sprocket you receive will match the picture.
Using your new AS3 Performance rear sprocket is straightforward. First, make sure your 2021 Rieju MR 300 (Racing, Pro, or Ranger) is turned off and on a stable surface. Remove the old sprocket carefully and then install the new one. It's a perfect fit for your bike. When riding, the self - cleaning grooves will keep the sprocket clean, but try to avoid extremely muddy or sandy conditions as much as possible. For maintenance, clean the sprocket regularly with a mild cleaner and a soft brush. Check for any signs of wear and tear every few rides. If you notice any issues, contact the UK company's customer service. The sprocket comes with a 12 - month warranty, so you can ride with confidence.
