frame MATTS J. 12
frame size 7"
fork Rigid steel fork
brake front Tektro 985A caliper
brake rear attached
brake lever APSE BL-01 alloy
headset VP H721
  • 500mm width
  • 120mm rise
handlebar stem Ahead alloy
grip Kraton
  • 22.2mm diameter
  • 0mm setback
seat clamp Alloy clamp allen
saddle MERIDA Kid Little
chain KMC Z410
chainguard attached
  • 16 teeth
  • 1 speed
bottom braket attached
  • 12x2.125"
  • wire bead
  • 16x2.125"
  • wire bead
hub front KT KT134
hub rear KT KT305R coaster
spokes Steel UCP

weighed at medium size

Bike Frame Geometry Image
Frame Size 7"
Tire Sizes 12"
Frame Size Inch 7
Frame Size CM 18
ST seat tube [mm] 180
TT top tube [mm] 300
CS chain stay length [mm] 241
HTA head tube angle [°] 70.5
STA seat tube angle [°] 73
BD bottom bracked drop [mm] 8
HT head tube [mm] 80
FL fork length [mm] 199
R reach [mm] 221
S stack [mm] 259
WB wheel base [mm] 583
SH stand over height [mm] 317
Body Height Cm < 110


Durable aluminium frame for 12" wheels, optimized for the use with training wheels.

Many of our bikes feature rigid forks. This helps to keep the weight down, which is a big advantage for much lighter riders. Gears are also kept to a minimum, avoiding confusion for young riders, again reducing weight.

All kids’ bike frames are made with the same 6061 lightweight aluminium we use in our adult bikes, we don’t cut any corners. They’re also painted and lacquered in the same way, so the bikes can still look great even after a few tough knocks.




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.