Birzman Belly Tri Top Tube computer_navigation The Castelli Light Head Thingy

The Castelli Light Head Thingy is not only versatile but also practical

thanks to the Progetto X2 Air Seamless seat pad

Whether you're a mountain biker or a road cyclist

(mm) 100 Spoke Hole|32H Yes Spoke Hole|36H Yes External Serration Disc Brake Rotor Lock Ring|Without Yes Axle Fixing Method Quick Release Quick Release Skewer Length (mm)|129 Yes Quick Release Skewer Length (mm)|133 Yes Flange Distance (mm) 71

or engaging in high-impact sports

Birzman Belly Tri Top Tube computer_navigation The Castelli Light Head ThingyBirzman Belly Tri Top Tube Optimize your race day essentials with the Birzman Belly Tri Top Tube Bag, a versatile accessory attachable with bolts or Velcro straps. Engineered for races and short travels, the Belly Tri combines functionality with durability for a seamless cycling experience. Secure Attachment Options: Adaptable to your preferences, the Belly Tri can be securely attached using either bolts or Velcro straps. This flexibility ensures a