This amazing lightweight, stiff, and precise aluminum rim is specially approved for eMTB use. With a 25 mm internal width, it offers outstanding support for mid - volume MTB tires. The bead - blasted surface finish is not only durable but also maintains its great look even after numerous tough trail rides. MATERIAL: ALUMINIUM INNER WIDTH: 25 mm OUTER WIDTH: 30 mm RIM DIAMETER: 27.5' (650b), 29' ERD: 563mm, 601mm BRAKE INTERFACE: Disc NUMBER OF HOLES: 28, 32, 36 BORE TYPE: Non eyelet PHR RECOMMENDED SYSTEM WEIGHT MAX.: 150 kg ASTM CLASSIFICATION: 4

Using this DT Swiss HX491 rim is straightforward. First, make sure to select the right tire size that matches the 25mm internal width. When installing the tire, take your time to ensure it's seated properly on the rim. For braking, since it's a disc brake interface, just use your regular disc brake setup. As for maintenance, after each ride, especially if you've been on a muddy or dirty trail, give the rim a good clean with a mild soap and water. Check for any signs of damage like cracks or dents regularly. If you notice any issues, it's best to have a professional look at it. Keep in mind that the maximum recommended system weight is 150 kg. Don't exceed this limit to avoid potential problems with the rim's performance and durability. Also, if you're riding in extreme conditions, you might want to inspect the rim more frequently.