AS3 Performance 7075 aluminium rear sprockets are a masterpiece. Crafted by one of the world's leading sprocket manufacturers, they've been tested by top riders on the toughest tracks globally. These sprockets are lightweight yet super durable. Made from high - quality 7075 - T6 aluminium using CNC machining, they offer maximum strength with minimum weight. They're over 50% lighter than standard OEM steel sprockets. Each tooth has self - cleaning grooves, and the sprockets have a smooth, polished anodised finish with AS3 Performance branding. They fit 2021 Rieju MR 300 Racing, Pro, and Ranger models. This UK - made sprocket comes with a 12 - month warranty, and the one you see in the picture is exactly what you'll get.
Using this rear sprocket is straightforward. Just replace your old sprocket with this one following the standard replacement process for your 2021 Rieju MR 300 (Racing, Pro, or Ranger). Make sure to check the fit and alignment during installation. When riding, you'll notice the difference in performance due to its lightweight design. For maintenance, keep it clean after each ride. You can use a mild cleaner and a soft brush to remove dirt and debris from the self - cleaning grooves. Store it in a dry place to prevent corrosion. If you notice any signs of wear or damage, contact the UK company for support as it comes with a 12 - month warranty.
