SMC-GOVAN-TW2 is a very popular Tri-spokes on the market since 2018 launch.

Recently more and more people are choosing Brompton 4-speed and 7-speed, and also there are many options for shifting systems.

To meet the demand, we are now have upgraded TW2 to support Brompton 2-speed or 3/4-speed or 7-speed.

1. If you want to keep original 2-speed, you can choose 2-speed, it is easy to change and install.

    a. Brompton original 2-speed change to 2-speed, just change the wheel is ok, not need others.

    b. Brompton internal gear 6-speed change to 2-speed, also just change the wheel is ok, but it only 2-speed, not 6-speed.

2. If you want to change to 3/4-speed, you need also change the freewheel and shifting systems.

    Why write 3/4-speed, that mean both support 3-speed and 4-speed, but the freewheel require is different.

    1）To fit 3-speed, usually use the gears from 9-speed freewheel, the last 3 gears.

    2)  To fit 4-speed, usually use the gears from 11-speed  or 12-speed freewheel, the last 4 gears, need thinner gears than 3-speed.

        P-line original 4-speed not recommed install direct to 3-speed freebody, need change thinner gears to fit.

    All models Brompton support to change to 3/4-speed, but need change the freewheel and shifting systems together, recommend find a professional bike shop to help.

3. If you want to change to 7-speed, you need also change the freewheel and shifting systems.

    To fit 7-speed, usually use the gears from 11-speed  or 12-speed freewheel, the last 7 gears, also thinner gears.

    All models Brompton support to change to 7-speed, but need change the freewheel and shifting systems together, recommend find a professional bike shop to help.

    7-speed has upgrade to V2 version, lighter and with ratchet system, please refer here.

Please refer to the image below, the freebody are different on 2-speed, 3-speed and 7-speed.