Thunder 50 Thunder 50

Frame size: from the middle of BB shell to the end of seat tube

Frame size (in)16,518.019.521.0
A Seat tube length (mm)533495457419
B Effective top tube length (mm)595595595595
C Seat tube angle (°)73737373
D Head tube angle (°)71717171
E Chainstay length (mm)424424424424
F Wheelbase (mm)1 075107510751075
G Head tube length (mm)140130120120
BB Shell size (mm)BC 1.37*24 / 68
Head tube size (mm)IHS 1-1/8
Seat post diameter (mm)27.227.227.227.2
Seat clamp diameter (mm)31.831.831.831.8
Front derailleur diameter (mm)31.831.831.831.8