Crankbrothers Synthesis XC Alloy 29" Wheel Precise handling at full speed. The Crankbrothers Synthesis XC Alloy wheel applies the same tuned front-and-rear philosophy as the rest of the Synthesis lineup, optimized for the speed and precision demands of XC riding and racing. The front runs a wider 26. 5mm internal width for increased tire volume and cornering grip, while the rear narrows to 24. 5mm for a sharper tire profile, reduced rolling resistance, and better tracking at speed. Both wheels use a welded and sleeved rim joint for additional strength. Synthesis Standard hubs, Sapim D-Light spokes throughout, and a 2-year rim warranty. Sold individually. Features Tuned front-and-rear XC alloy wheel system each wheel optimized for the specific performance requirements of its position on the bike Front: 26. 5mm inner rim width for increased tire volume, contact patch, and cornering grip Rear: 24. 5mm inner rim width for a narrower tire profile, sharper edge grip, and improved rolling efficiency Welded and sleeved rim joint for additional strength and long-term durability Synthesis Standard hub with 17deg engagement on the rear for reliable, efficient power transfer Sapim D-Light spokes front and rear for a light, compliant build SPECIFICATIONSCompatibility Tubeless Ready / Compatible Hub Synthesis Standard Hub Type6-Bolt Engagement - Rear17degRim Material6013 T6 Alloy Inner Rim Width - Front26. 5mm Inner Rim Width - Rear24. 5mm Rim Height21mm Spoke Count - Front28Spoke Count - Rear32Spokes Sapim D-Light Weight - Front841g Weight - Rear998g Warranty2 Years (rim only) | Crankbrothers | Synthesis Xct 29" Wheel Front 15X110 6B | Aluminum