Crankbrothers Synthesis Alloy Enduro 29 Wheelset. Tuned alloy rims for Enduro riding and racing. Front and rear specific rims are optimized to address the specific performance requirements and loads of mountain biking. Wider rim width supports a wider tire profile up front for more air volume and larger contact patch. Stiff tuned 32-hole rear rim supports peak loads and enhances stability at speed. Narrower rim width supports a narrower rear tire for lower rolling resistance and good grip from edge knobs. Welded and sleeved rim joint for additional strength. They were mounted to a bike, but never ridden. Front Hub: Factor Premium (Gold) 28H, 20 x 110 TA. Rear Hub: Factor Premium (Gold) 32H, 12 x 150, XD. Maxxis Assegai 29x2.5 3C MaxxGrip DD Tires (Front & Rear).