105 BB-5500 Kid's Construction: Plastic and molded rubber

Construction: Plastic and molded rubber

These rims are 28 mm deep and are made from carbon laminated aluminium base

Shorter rear center (410 mm) with 135 mm O

while a high-volume casing offers nice shock absorbency and a smooth ride

+ Superior combination of durability and playability in an 18-gauge string

105 BB-5500 Kid's Construction: Plastic and molded rubberAs a direct descendent of Dura Ace, no other road component group provides the same cost performance value as Shimano 105. The Octalink V1 8 spline interface between the BB and crank arm forms a strong highly rigid connection that reduces weight and increases strength.