The SLR 1 42 Disc Wheel Systems are lightweight and efficient carbon all-terrain road wheels that deliver top-level performance for all cyclists. Featuring a hookless rim design and optimized carbon layup to ensure a strong but lightweight structure, a contemporary wider inner width, as well as low friction hubs providing low rolling resistance and Dynamic Balanced technology Lacing (DBL) to maintain maximum energy efficiency, the SLR 1 42 and SLR 1 42 Disc deliver exceptional performance without compromise.