Crank Brothers Synthesis XCT Alloy Wheel Precise handling at full speed. Crank Brothers engineered the Synthesis XCT Alloy wheel system from the ground up for XC riding and racing, with front and rear wheels tuned independently to address the distinct performance demands of each position. The compliant front wheel features a wider 26. 5mm inner rim width for increased tire volume, a rounder profile, and maximum grip in corners. The stiffer rear wheel runs a narrower 24. 5mm inner rim width to sharpen the tire edge, improve rolling resistance, and handle peak loads at speed. Both wheels use a 6013 T6 alloy rim with a welded and sleeved joint, Sapim D-Light spokes, and a tubeless-ready setup. Features Front and rear-specific tuning compliant front for grip and handling, stiff rear for stability and tracking at speed Wider front inner rim width (26. 5mm) rounds the tire profile for increased contact patch, volume, and cornering control Narrower rear inner rim width (24. 5mm) sharpens the tire edge to improve rolling resistance and grip under load6013 T6 alloy rims with a welded and sleeved rim joint for added strength and durability Sapim D-Light spokes offer an ideal balance of weight savings and reliable tension retention SPECIFICATIONSHub Synthesis Standard Disc Brake Type6 Bolt Freehub Engagement17degRim Material6013 T6 Alloy Inner Rim Width26. 5mm Front, 24. 5mm Rear Outer Rim Width31mm Front, 29. 2mm Rear Rim Height21mm Spoke Count28 Front, 32 Rear Spokes Sapim D-Light Intended Use Trail, XC | Crankbrothers | Synthesis Xct Alloy 29" Wheel Front 15X110 6B | Aluminum