Matts J12 (Girl)

Matts J12 (Girl)


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  • *All specifications listed are subject to change without notice. *Recommended Retail Prices are subject to change without notice.

  • brakes Side Pull / Coaster in R.Hub.
    frame MATTS J. 12
    frame size 7"
    fork Rigid Steel
    color pink (blue)
    derailleur (f) no
    derailleur (r) no
    shifter front no
    brake lever Kid Lever
    brake front Side Pull
    brake rear Coaster in R.Hub.
    chainwheel Steel 28T 89L BK
    chain Z410A
    hub front Steel NT
    hub rear Steel Coaster
    rim Alloy Black
    freewheel 16T
    tyre front Kid Smooth 12 x 2.25"
    handlebar Kid Alloy Rise 460
    headset General
    seat post Steel 22.2
    saddle Matts kid 16
    kickstand no
    Bike Frame Geometry Image
    Frame Size 7"
    Tyre Sizes 12"
    Frame Size Inch 7
    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 bracket 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

    To reduce production and delivery times, we are sometimes forced to make last-minute specification changes. Please be aware that those changes might not be reflected on these product pages and images.



    These models are built around a very small adult frame with 26" wheels. As the child grows, the wheels can be swapped for 650B wheels, meaning the bike will fit your child for longer.

    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, as well as 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.


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    We use a minimum of 6061 grade aluminium on all our bikes. It’s particularly well suited to being shaped with our hydroforming and technoforming processes, which allow us to vary the wall thickness to create double-butted tubing and complex frame shapes. It’s also an alloy that welds easily, and once it has been carefully heat treated to maximise strength, it means we can create strong and lightweight bicycle frames for you to enjoy.

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