30 XC SL Wheels deliver climbing efficiency and descending performance for the needs of today's World Cup XC racing and modern XC bikes. With steeper and more technical courses, the world's best riders need more control and strength, without compromising on weight. 30 XC SL delivers on both.Includes XD and Micro Spline freehub bodies30 XC SL wheels features carbon spokes and 30g of weight savings per rim, compared to the 30 XC modelA special carbon layup and greater use of high modulus fiber make the SL rims lighter and with identical strength characteristics and ride qualityVonoa carbon spokes are 30% lighter than traditional steel spokes and deliver a stiff, responsive ride. Team riders say the carbon spokes feel very planted, and the stiffer spokes reduce spoke wind up, which makes it feel like they can accelerate fasterPaired with DT Swiss 180 hubs; the benchmark for lightweight, high-performance hubs, with worldwide support for driver bodies and small partsModern XC race bikes have wider tires, more travel and geometry that allows riders to push harder than ever before. The 30mm internal width accommodates wider tires (2.35-2.5), for better support in corners and more traction in technical sectionsIncreased spoke count to 28. The new rim gives you improved strength anddurability at a lower weightDT Swiss Degree of Freedom systItem SpecificationsCassette Body TypeShimano Micro SplineCassette Body TypeSRAM XDColorCarbonDefined ColorBlackFront Axle15mm Thru x 110mmHub/Brake CompatibilityCenter-Lock DiscISO Diameter622 / Road / 29"Rear Axle12mm Thru x 148mmRim MaterialCarbonRim Width (Internal)30Tire TypeTubeless ReadyValvePrestaWheel Size29" Reserve Wheels Reserve 30 XC SL Wheelset Wheelset UPC: 192219524184