THUNDER 20

FRAME Custom Alu 6061.T6
FORK Custom Alloy, rigid
CRANKSET WheelTop M32 28T
REAR DERAILLEUR Shimano RD-FT35AD
SHIFTER Shimano SL-RS45 Revoshift
FREEWHEEL/CASSETTE Shimano HG-200-7 12-28T
CHAIN KMC Z50
BRAKES Tektro BR-855 V-brake
BB Thun Topaz
HEAD SET CH290TBW
PEDALS Marwi SP-202
FRONT HUB ONE KT
REAR HUB ONE KT
RIMS Weinmann ZAC 19 20H
SPOKES Sapim Galvanized
TIRES Schwalbe Little Joe 20x2.00"
STEM Alloy 25,4mm
HANDLEBAR Alloy rised
GRIPS Velo Junior grip
SEAT POST HL Corp Alloy
SADDLE Velo Junior
GEARS 1x7
SIZES 10.0"
Total WEIGHT* 8.8 kg

Weight is set for M sized frame unless stated otherwise. We focus on maximum reliability, so cutting some grams down is not our priority! The weight is measured as the each bike specification shows.

Wheelsize
Frame Size	10.0"
A SEAT TUBE LENGTH (mm)	10.0": 255
B EFFECTIVE TOP TUBE LENGTH (mm)	10.0": 460
C SEAT TUBE ANGLE	10.0": 73°
D HEAD TUBE ANGLE	10.0": 70°
E CHAINSTAY LENGTH (mm)	10.0": 350
F WHEELBASE (mm)	10.0": 870
G HEAD TUBE LENGTH (mm)	10.0": 110
FORK LENGTH (MM)	10.0": 330
bb drop (mm)	10.0": 10
HEAD TUBE SIZE	10.0": BC 1-1/8" ID34.0/OD41 mm
REAR CENTRE (MM)	10.0": 349
front fork offset (mm)	10.0": 38
BB SHELL SIZE	10.0": BC 1.37"x24TPI / 68 mm
SEAT POST DIAMETER (mm)	10.0": 27.2
SEAT CLAMP DIAMETER (mm)	10.0": 31.8
Handlebar Width (mm)	10.0": 560/R30
Crank Length (mm)	10.0": 127
Stem Length (mm)	10.0": 35
seat post lenght (mm)	10.0": 230