model: 451 ZAP Group
year: 1989 – 1993
specs: Clamp replaced by a Modolo; Hoods DiaCompe
condition: very good
The Mavic ZAP group was one of the first attempts at an electronic shifting mechanism for bicycles. The attempt, however, was a near complete failure with multiple major problems with the design of the rear derailleur as well as limited battery life.