Thunder 50

Thunder 50

Specs a geometry

FrameAlu 6061
Sizes16.5", 18.0", 19.5", 21.0"
Speed27
ForkSR Suntour XCM V3 MLO, 100mm
Rear shock-
CranksetShimano Acera FC-M391 44/32/22T
Rear DerailleurShimano Acera RD-M390 SGS
Front DerailleurShimano Acera FD-M390
ShiftersShimano Acera SL-M390
BrakesTektro RS360A / Tektro 845 v-brake
FreewheelShimano HG30-9 11-32T
ChainKMC Z9000
B.B. setThun Jive JIS
Head setONE IHS 1-1/8.0" Integr.
PedalsFeiming FP-971 Alloy
HubsShimano M70
RimsWeinmann Taurus 2000 Sport Disc double wall
Tires/TubesImpac Crosspac 26x2.0"
SpokesSapim stainless
GripsRitchey PRO TG6
SaddleWTB Volt
H/BarRock Machine Alloy
StemRock Machine Alloy
S/PostRock Machine Alloy
Motor-
Battery-
Brake levers-
Shift levers-
(system spring/damping)-
(travel)-
Electric drive-
Battery-
Charger-
Travel-
Cityset-
Front Hub-
Rear Hub-
Weight-

Frame size selector

16.5"
18.0"
19.5"
21.0"
Frame size (in)16.518.019.521.0
A Seat tube length (mm)533495457419
B Effective top tube length (mm)564575585595
C Seat tube angle (°)73737373
D Head tube angle (°)71717171
E Chainstay length (mm)424424424424
F Wheelbase (mm)1075107510751 075
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
Fork lenght (mm)470470470470

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