Zipp 1ZERO HITOP S Wheel Rear 29 / 622 Holes: 24 12mm TA 148mm Disc 6 bolt Shimano Micro SplineThe 1ZERO HITOP S wheelset melds high value with high performance for a better and faster ride. The 1ZERO HITOP S carbon rim complies with the terrain thanks to Zipps proprietary HITOP Technology. The result is a light XC race or adventure wheel that carries speed through all sections of the trail, rocks, roots, and rutswith the durability required for a trail bike with up to 130mm of travel. The winged rim top provides a smooth resting surface for