The XC Race SLS Carbon Wheelset is a world cup-tested all-purpose weapon for all cross-country, marathon and trail hunters. In the boost version it weighs in at just 1268g! Using Arcos’ Nineteen XC hubs in straight pull design, manufactured in Germany, which are inserted with CX-Ray spokes from Sapim.Key Features Hub: Nineteen XC Boost Axle system: FW Boost 110 x 15 Axle system: RW Boost 148 x 12 Freewheel: XS, Shimano (available separately) Holes: 28 Internal rim width: FW 28mm, RW 25mm External rim width: FW 33.9, RW 30.9 Spokes: SAPIM CX-RAY Weight: 1268g Max rider weight: 95kg