frame MATTS J. 20
frame size 10"
fork Rigid Steel
derailleur front no
derailleur rear no
shifter front no
brake lever Junior Alloy
brake front V-Brake Linear A
brake rear Coaster in R.Hub.
chainwheel Steel 40 152L DG Silver
chain Z410A
hub front Alloy NT
hub rear Steel Coaster
rim Alloy Black
freewheel 18T
tire front Lite 20 x 1.75"
spokes Steel UCP
handlebar XM Steel Rise 550
headset A-Head Black
seat post Alloy 27.2
saddle Matts kid 20
color green (red)
Bike Frame Geometry Image
Frame Size 10"
Tire Sizes 20"
Frame Size Inch 10
Frame Size CM 26
ST seat tube [mm] 260
TT top tube [mm] 460
CS chain stay length [mm] 390
HTA head tube angle [°] 69
STA seat tube angle [°] 72
BD bottom bracked drop [mm] 15
HT head tube [mm] 110
FL fork length [mm] 359
R reach [mm] 318
S stack [mm] 439
WB wheel base [mm] 911
SH stand over height [mm] Boy:507/Girl:456
Body Height Cm 115 - 140




We use a minimum of 6061 aluminium. The pay back is that it’s possible to make lighter and more advanced frames. We use an additional heat treatment and double-butted wall thicknesses to produce light and stiff frames.