Bike Comparison
    MSRP
    ($227)
    ($695)
    Where to Buy
    $1

    At

    $1

    At

    Category
    CrosscountryTrail
    Weight
    28.3 lbs
    AluminumAluminum
    Fork
    RockShox 30 Silver TK (air)
    27.5″27.5″
    Brakes
    Hydraulic Disc
    Groupset
    microSHIFT
    Suspension
    Hardtail
    Front Travel
    -120mm
    Brand Site

    decathlon.co.uk

    decathlon.co.uk

    Summary
    The B’TWIN ST 100 MOUNTAIN BIKE, - 27.5 and B’TWIN ST 900 Women's Mountain Bike - 27.5" are both 27.5″ aluminum frame mountain bikes.
    Similar Bikes
    Accessories
    Geometry
    Specs
    Fork

    The 120 mm Rockshox 30 Silver Air hydraulic fork is 400g lighter than that of the ST 540 bike. It is conical and offers even more stiffness and precision when steering. Easily adjust the bounce and stiffness of the fork. Its quick COMBO LOCK lockout system, which you control from the handlebar, helps to prevent bobbing and loss of speed on smooth sections.

    Saddle

    Our teams designed the Rockrider "Women's Comfort" ergonomic saddle especially for women. It was specifically created for women's bodies, with a hammock shape and hollowed-out centre that is especially great for sport touring. The Flex 27.2mm diameter aluminium seatpost also contributes to its increased level of comfort. Quick and easy tool-free adjustment of your saddle height using the adjustment lever on the seat post clamp.

    Groupset
    Crank

    The single chainring is easy and efficient to use. 1 chainring and 11 speeds: accelerate on the flat and take on climbs with no compromise. 1 single shifter on the handlebar: adapt your speed instantly like the pros as the terrain changes! In detail:, -SRAM X1 32-tooth single chainring, -MICROSHIFT M665 11-speed rear derailleur, -MICROSHIFT M8515 right shifter, -MICROSHIFT H113 11-cog 11 to 46 teeth cassette, -KMC X11 chain

    Brakes

    TypeHydraulic Disc

    No matter what conditions you ride in (dry/wet), the Rockrider by Tektro 180 mm (front) and 160 mm (back) double hydraulic disc brakes will come through for you, even in the mud. Hydraulic braking adds more power and progressive braking and requires less powerful use of the brake levers. The aluminium brake levers are easy to grip, lightweight, and precise.

    TypeHydraulic Disc

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