AS3 Performance rear sprockets made of 7075 aluminium are top - notch. Crafted by one of the world's leading sprocket manufacturers, they've been tested by the best riders on the toughest tracks. These sprockets are lightweight yet super durable. CNC machined from high - quality 7075 - T6 aluminium, they feature self - cleaning grooves between each tooth and a smooth anodised finish with AS3 Performance branding. With 51 teeth, they fit 2021 Rieju MR 300 Racing, Pro, and Ranger models. They're designed for maximum strength with minimum weight, over 50% lighter than standard OEM steel sprockets. Made by a UK company with a 12 - month warranty, the sprocket you see in the picture is exactly what you'll get.
Using your new AS3 Performance rear sprocket is straightforward. Just install it on your 2021 Rieju MR 300 Racing, Pro, or Ranger as you would with a regular sprocket. When using, make sure to keep an eye on the chain tension. Since this sprocket is lighter, it might affect the overall feel a bit, but it'll give your bike better performance. As for maintenance, regularly clean the self - cleaning grooves between the teeth to keep them in top shape. You can use a mild cleaner and a soft brush. If you notice any damage or excessive wear, contact the UK company, as it comes with a 12 - month warranty.
