The Zipp 1ZERO HITOP SW MTB wheelset makes you faster. Flexibility on the trail is crucial, as modern cross-country races are becoming increasingly tough and demanding. It's no longer enough for an XC wheelset to be primarily stiff. Instead, a wheelset should feel lively. The 1ZERO HITOP SW carbon rim adapts to the terrain thanks to Zipp's HITOP technology for carbon layup. The result is a lightweight XC wheel that carries speed through all sections of the trail, including rocks, roots, and bumps, while providing the durability required for a trail bike with up to 130 mm of travel. A flexible wheelset instills more confidence. You won't have to work as hard to gain speed or wrestle with your bike when things get tricky. The 1ZERO HITOP SW is also equipped with the TyreWiz tire pressure monitoring system, ensuring you always have the right tire pressure for optimal performance. The ZM2 SL hub set is among the lightest on the market, allowing you to accelerate quickly with the 1ZERO HITOP SW and get back on the pedals faster after corners.