What happens when you pair the latest, ultra-light, ultra-direct DT Swiss Ratchet System hubs and a cross country-specific tuned 30 mm internal width carbon rim? In combination with 28 bladed, high-end DT Swiss spokes built into a wheel by master wheel builders, you end up with THE weapon for today's XC races: Extremely capable over gnarly roots and rocks, both up and down, yet more than light enough for fast qualifiers and attacking out of tight switchbacks. The XRC 1200 SPLINE 30, ultra fast. 

https://www.dtswiss.com/en/products/wheels-mtb/cross-country/xrc-1200-spline/xrc-1200-spline-30/