AS3 Performance silicone radiator hoses are made from top - quality silicone with polyester reinforcement. This makes them much stronger, more durable, and less likely to get punctured or damaged compared to standard rubber hoses. Many of our sponsored teams and riders use these silicone hose kits in various race conditions. The hoses have a gloss finish with AS3 Performance branding. They fit 2021 Rieju MR 300 Racing, Pro, and Ranger models (Thermostat Bypass Kit). Key features include high - quality silicone with polyester reinforcement, 2 - ply hoses with 3.5mm wall thickness, pressure testing up to 5 times the working pressure. They are used by national and world - level sponsored mx and enduro riders. Designed for off - road and track use only, not approved for road or public highway use, and come with a 12 - month warranty from the purchase date. The hoses you'll receive are exactly the ones in the picture.

How to use: Install these radiator hoses on your 2021 Rieju MR 300 Racing, Pro, or Ranger models as a thermostat bypass kit. Make sure to follow the standard installation procedures for radiator hoses. Attention: These hoses are only for off - road and track use, don't use them on public roads. Also, since they are pressure - tested up to 5 times the working pressure, don't exceed the normal pressure range during use. Maintenance advice: Check the hoses regularly for any signs of wear or damage. If you find any issues, contact us within the 12 - month warranty period from the purchase date. Keep the hoses clean and store them in a cool, dry place when not in use.