Airdrop Bitmap Geometry & Specifications

  • We put a huge amount of work into getting the Bitmap's geometry dialled. A bike that's designed to be ridden as hard as this, and particularly a hardtail, is all about the angles. The whole idea was to produce a bike that's fast and fun; like the bikes we used to ride when we were kids, but with everything we've learned about progressive geometry and the latest standards rolled in. A hardcore hardtail for the modern era.

    There are four sizes to choose from, all with super-low standover. You can choose the reach you want and run a 150mm or 170mm dropper to get the desired pedalling position. It's low in the BB too, with a -45mm BB drop... perfect for railing through berms. The rear-end is short at 420mm but it can handle a modern 2.6" tyre with tonnes of mud clearance. Meanwhile at the business end there's a 65° head angle for charging through tech and down the steeps. It's easy to jump and manual, it's roomy enough to go fast but it'll also thread through singletrack at pace.

    Airdrop Bitmap Geometry
    Size Small Medium Large X-Large
    A Seat Tube 410 435 460 485
    B Effective Top Tube 585.1 606.4 626.4 646.4
    C Reach 420 440 460 480
    D Stack 616.4 616.5 620.9 625.5
    E Chainstay 420 420 420 420
    F Head Tube 110 115 120 125
    G Head Tube Angle 65° 65° 65° 65°
    H Seat Tube Angle 74° 74° 74° 74°
    I Bottom Bracket Drop -45 -45 -45 -45
    J Wheelbase 1150.4 1170.3 1192.4 1214.6
    K Fork Length 532 532 532 532
    L Fork Offset 46 46 46 46

    All measurements in mm. Based on a 140mm fork.

  • The Bitmap hardtail frame was designed in Sheffield and developed on trails throughout the UK. As with all our bikes, it's built to be simple but effective. It's also fully up to date, with a Boost 12x148mm rear axle (included), integrated 180mm brake mount, a threaded BB shell and stealth dropper compatibility. We don't cal it a "plus" bike but it has plenty of clearance for 2.6" tyres.

    If you have any questions regarding compatibility, please contact us.

    Frame Airdrop Bitmap
    Material 6061 T-6 Alloy
    Travel n/a
    Wheel Size 27.5" (650b)
    Bottle Cage Mount Yes
    Front Mech Mount No
    Rear Shock Size n/a
    Rear Shock Mount n/a
    Bottom Bracket 73mm BSA30 threaded
    Chain Guide Mount ISCG05
    Headset Top 1 1/8" / 44mm inset (ZS44)
    Headset Bottom 1 1/2" / 56mm inset (ZS56)
    Seatpost Diameter 30.9mm
    Seat Clamp Diameter 35mm
    Rear Axle Boost 148 x 12mm Rockshox Maxle
    Rear Brake Mount Post
    Minimum Rotor Size 180mm
    Maximum Rotor Size 203mm
    Maximum Tyre Size 27.5" x 2.6"
    Cable Routing External with Stealth Dropper
  • People come in all shapes and sizes, and we all have different preferences. This sizing information is intended to be a guide, and for most people it will be sufficient to make the right choice. But if you would like to discuss sizing or if you have any questions, feel free to contact us.

    Airdrop Bitmap Frame Small Medium Large X-Large
    Rider Height (cm) 157 - 168cm 168 - 178cm 178 - 188cm 188 - 198cm
    Rider Height (in) 5'2" - 5'6" 5'6" - 5'10" 5'10" - 6'2" 6'2" - 6'6"