Aeris 120 Full Suspension

The All New Aeris 120

The New Aeris 120 has landed. Stonkingly good trail Geometry meets our unique blend of easy to use features, making the Aeris 120 our most advanced bike yet.

Designed by us in the UK from the ground up, the Aeris 120 is a hard riding trail bike, but climbs like an XC whippet, while keeping the fun levels high when the trail heads downhill.

The new Aeris 120 features:

  • 120mm rear travel, 130mm front.
  • All new tube-set, designed to give the best stiffness to weight ratio
  • All other parts machined, for precise tolerances and quality all round
  • New mini-collet axle system
  • One piece hollow section yoke
  • 148 Boost rear end
  • One piece brake/axle assembly for maximum precision and minimum squeal
  • Metric shock sizing
  • Double bearing shock mount to give the smoothest suspension movement
  • 1x specific rear end for maximum stiffness
  • Removable ISG05 mount
  • Bottle cage mounts!

Of course we’ve not dropped what made the original Aeris 140 so popular:

  • Maxle rear axle
  • Fantastic pedalling performance combined with a supportive shock curve
  • External cable routing, because we live in the UK
  • Threaded Bottom bracket
  • Max compliment sealed cartridge bearings on all pivots
  • Tapered ZS44/ZS56 headset
  • Reverb stealth routing
  • 650b wheels
  • A stonkingly good price
  • 5 sizes, 3 colours and complete configuration control on all models

Complete Bikes

  • Aeris 120 – GX11

    From: £2,114.80 £2,064.80

    The SRAM GX equipped Aeris 120 combines the a 10-42T 11 speed drivetrain with Rockshox Suspension for a supremely balanced package.

  • Aeris 120 – NX11

    From: £1,977.00 £1,927.00

    SRAM NX is here, turning our already amazing value Aeris 120 into an 11 speed bargain.

  • Aeris 120 – Shimano 11 speed

    From: £2,194.00 £2,144.00

    Shimano 11 speed equipped Aeris 120, available with either 11-42 or 11-46 cassette options.  

  • Aeris 120 – Ultimate Edition

    From: £3,648.00

    The specification speaks for itself. This really is the ultimate trail bike for people who want the best, long before their friends can get it! Please Note: EARLIEST SHIP DATE ON THIS BIKE IS 1st JUNE DEPENDING ON FRAME STOCK. Also please note: Sorry its so new we don't have a picture of the complete…

  • Aeris 120 – X01 Eagle

    From: £2,964.00 £2,884.00

    The SRAM X01 Eagle equipped Aeris offers a huge range of gear ratios from a 10-50 12 speed rear cassette, perfect for all day epics as well as local trail action.


  • Aeris 120 Frameset

    From: £900.00

    Say hello to our latest creation. To say we're proud of this one is an understatement; this is 120mm of the finest trail carving full suspension bike that you'll ever have the pleasure to swing a leg over. DESIGNED BY US IN THE UK FROM THE GROUND UP, THE AERIS 120 IS A HARD RIDING…


Image Gallery


Bird Aeris 120, Technical Data Sheet V1.0