Using these handlebar clamps is easy. First, make sure your bike is a 2021 - 2023 Fantic XX 125, 2021 - 2023 Fantic XE 125, or 2022 - 2023 Fantic XX 250, or has a top yoke with 12mm diameter bolt holes. Then, simply attach the clamps to your 28.6mm handlebars using the included bolts. No modifications are needed, so it should be a straightforward process. As for maintenance, keep the clamps clean. You can use a mild cleaner and a soft cloth. Check the bolts regularly to make sure they're tight. If you notice any signs of damage, contact our customer service as these clamps come with a 12 - month warranty from the date of purchase.