The 1ZERO HITOP S MTB wheelset from Zipp combines high quality with high performance for a better and faster riding experience. Flexibility on the trail is crucial, as modern cross-country courses are becoming increasingly tough and demanding. It's no longer sufficient for an XC wheelset to be primarily stiff; instead, a wheelset should feel lively. The 1ZERO HITOP S carbon rim adapts to the terrain thanks to Zipp's developed HITOP technology for the carbon layup. The result is a lightweight XC or adventure wheel that maintains speed across all sections of the trail, including rocks, roots, and bumps, while also providing the durability required for a trail bike with up to 130 mm of travel. A flexible wheel instills more confidence. The 1ZERO HITOP S is equipped with reliable ZM 900 hubs.