A Viper tandem frame
Recommended to be built with a fork with 100mm travel
Seat tube diameter : 27.2mm Semi integrated headset (not included) Compatible with a 31.6mm diameter front derailleur Brake mount : V-Brake and Disc IS Aluminium tubes Weight : 3.96 kg Warranty : 2 years
TANDEM
Size ( F-E )
A
B
C
D
20''/ 16''
677
557
125
430
21''/ 17''
678
563
140
Manufacturers link : http://www.viper-sconcept.eu