THUNDER 24

FRAME Custom Alu 6061.T6
FORK Custom Alloy, rigid
CRANKSET WheelTop M32 28T
REAR DERAILLEUR Shimano Altus RD-M310
SHIFTER Shimano SL-M310 RapidFire Plus
FREEWHEEL/CASSETTE Shimano HG-31-8 11-34T
CHAIN KMC Z51
BRAKES Tektro BR-855 V-brake
BB Thun Topaz
HEAD SET CH290TBW
PEDALS Marwi SP-400
FRONT HUB ONE KT
REAR HUB ONE KT
RIMS Weinmann ZAC 19 24H
SPOKES Sapim Galvanized
TIRES Schwalbe Little Joe 24x1.85"
STEM Alloy 25,4mm
HANDLEBAR Alloy rised
GRIPS Velo Junior grip
SEAT POST HL Corp Alloy
SADDLE Velo Sport Junior
GEARS 1x8
SIZES 12.5"
Total WEIGHT* 9.7 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	12.5"
A SEAT TUBE LENGTH (mm)	12.5": 320
B EFFECTIVE TOP TUBE LENGTH (mm)	12.5": 510
C SEAT TUBE ANGLE	12.5": 73°
D HEAD TUBE ANGLE	12.5": 70.5°
E CHAINSTAY LENGTH (mm)	12.5": 400
F WHEELBASE (mm)	12.5": 971
G HEAD TUBE LENGTH (mm)	12.5": 115
FORK LENGTH (MM)	12.5": 380
bb drop (mm)	12.5": 20
HEAD TUBE SIZE	12.5": BC 1-1/8" ID34.0/OD41 mm
REAR CENTRE (MM)	12.5": 399
BB SHELL SIZE	12.5": BC 1.37"x24TPI / 68 mm
front fork offset (mm)	12.5": 40
SEAT POST DIAMETER (mm)	12.5": 27.2
SEAT CLAMP DIAMETER (mm)	12.5": 31.8
Handlebar Width (mm)	12.5": 600/R30
Crank Length (mm)	12.5": 140
Stem Length (mm)	12.5": 35
seat post lenght (mm)	12.5": 300