Zipp 1Zero HiTop S Front Wheel - 29 15 x 110mm 6-Bolt Tubeless Carbon A1 Model=Bottom Bracket Gauge Porelle® PU membrane

Porelle® PU membrane

1 Flight Attendant damper for the right balance of comfort control and speed

The Nano Optics Photochromic™-lens protects your eyes from the strong sunlight that can otherwise be almost painful at higher altitudes

DFour DUB is designed for Dura-Ace R9100 chainrings

gearing refers to how hard your child has to pedal

Zipp 1Zero HiTop S Front Wheel - 29 15 x 110mm 6-Bolt Tubeless Carbon A1 Model=Bottom Bracket Gauge Porelle® PU membraneZipp 1Zero HiTop S Front Wheel 29 15 x 110mm 6 Bolt Tubeless Carbon A1. The 1Zero HiTop S wheelset melds high value with high performance for a better and faster ride. Trail compliance is vital with modern cross country courses becoming rougher and more challenging. No longer is it good enough for an XC wheelset to be stiff above all else. Instead a wheelset should feel alive. The 1Zero HiTop S carbon rim complies with the terrain thanks to Zipps