Using these AS3 Performance silicone radiator hoses is straightforward. First, make sure your engine is cool. Then, carefully remove the old radiator hoses from your 2017 - 2020 Honda CRF 450 R, CRF 450 R WE, or CRF 450 RX. Install the new hoses in their place, ensuring a tight fit. Remember, these hoses are for off - road and track use only, so don't use them on public roads. When it comes to maintenance, check the hoses regularly for any signs of wear or damage. If you notice any issues, contact us right away. The hoses come with a 12 - month warranty from the date of purchase, so you can ride with confidence.