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    BMX Assembling and Maintenance

    It is not easy to build your own BMX bike. Various parts might not fit together and if you assemble it wrong, you can easily destroy the parts. This guide will help you with the basics of assembling og maintaining a BMX bike.

    A BMX Bike Consist Of

    1x Frame Includes brake connectors unless otherwise noted
    1x Bar Fits on almost all forks unless otherwise noted
    1x Stem There are two types - topload and frontload
    1x Head set Many systems exist, the most known are integrated
    1x Head set spacer A headset spacer can adjust the height of the bar
    1x Fork The fork should fit with your wheelsize
    1x Set Grips Grips fits on all bars unless otherwise noted
    1x Set Pedals Pedals are offered in plastic, steel or aluminium
    2x Wheels There is a difference between front and back wheel
    2x Tyres Remember that tyres are sold piecewise
    2x Tubes Our tubes fits all tyre widths, unless otherwise noted
    1x Crankset The size of a crank axel can vary between 19, 22 and 24 mm.
    1x Crank box Remember to buy a crankbox fitting the right axel size.
    1x Sprocket Comes with or without a bolt mounting
    1x Chain Remember to adjust the lenght before mounting it
    1x Seat Many systems exist, known are pivotal and tripod.
    1x Seatpost Remember to buy a seatpost fitting your seat

    The various parts are called

    Advices and recommendations from SkatePro

    • Get an adult to help you with the assembly
    • Use proper tools (see further down what is needed)
    • Expect to use at least 1 hour for the assembly (if you have not tried it before)
    • If you choose lightweight parts, then bear in mind, that they are usually more easily broken than heavy parts.
    • When you receive the package, check if you have everything and the parts fit together before you start to assemble. (You can only return the new/unassembled parts).
    • Always tighten all screws and nuts before biking and maintain the bike as described in the manual. Replace defective components & spare parts.
    • Avoid water, sand, moist areas.

    What should I use to assemble my BMX bike with?

    This is only relevant for assembling complete BMX bikes.

    Here is a list of the needed tools to assemble your BMX (it is not included when purchasing a BMX bike at SkatePro):

    1x 5mm allen key
    1x 6mm allen key
    1x 15mm spanner
    1x 17mm or 19mm spanner
    1x Bike air pump
    1x Side cutter or scissor


    Find our selection of BMX tools here.

    Assembling a partly assembled BMX bike

    When you receive your BMX bike partly assembled, in most cases, you will have to assemble the following parts: bar, front wheel, seat and pedals.

    A guide on how to mount the parts will usually follow with the bike.

    Remember to pump the tyres on the bike before using it.

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