The incredibly light B.O.R 309 XMD Tubular disc brake rim was developed by B.O.R in collaboration with FRM and is likely the lightest tubular tire disc brake rim with eyelets available.
The asymmetric rim profile is sleeve joint. The asymmetric design offsets the spoke holes by 1,3 mm to minimize the differences in the tension of the left and right spokes. The result is a significantly stronger and more durable wheel. The spoke holes feature eyelets and are approved for a spoke tension of up to 1200 Nm.
The 309 XMD Tubular can be used with tubular tires only! Please pay attention to the technical requirements specified by the manufacturer of the tire.
Maximum rider weight: This rim is approved for a maximum rider weight of 90 kg, including clothing, shoes and a backpack (if used).
Material: aluminium, anodized
Weight supplement: manufacturer specification
