This is the limited edition 20" Birdy released by riese und mueller. It features an 18 speed gear system with a double chainring incorporating Shimano 105 road gear in the bottom bracket, crank, chainring, rear derailleur and STI levers.
It also features drop bars and high pressure tyres and has an impressive gear range. Perfect for the discerning cyclist who prefers a light-weight sporting bike for high-end recreational riding.
^ Rollout is a useful measure that tells you how many metres the bike will travel in one revolution of the crank. Results are for the smallest and largest sprockets only.
* Weights are approximate as they can vary slightly with each shipment. Measurement made without kickstand attached.
