Sonder Cortex

Sonder Cortex

Fast and agile, Cortex is a trail riding, down-country, all terrain mountain bike for seriously epic days out. It comes alive on long technical descents with 120mm travel, big wheels and a stiff responsive frame... Read more

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Cortex Frameset

Short travel 29er full suspension MTB

  • Trail bike geometry
  • Rockshox Deluxe Select+ shock
  • Horst link suspension design
  • Metric shock standard

Bundle price €1.349
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Cortex Deore

Short travel 29er full suspension MTB

  • Shimano Deore 1x12 groupset
  • Rockshox Recon Silver RL fork
  • Rockshox Deluxe Select+ shock
  • Sonder Nova 29" wheelset

Bundle price €2.099
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 13 April.

Cortex SLX

Short travel 29er full suspension MTB

  • Shimano SLX 1x12 groupset
  • Rockshox Recon Silver RL fork
  • Rockshox Deluxe Select+ shock
  • Sonder Nova 29" wheelset

Bundle price €2.549
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Cortex NX Eagle

Short travel 29er full suspension MTB

  • SRAM NX Eagle 1x12 groupset
  • Rockshox Recon Silver RL fork
  • Rockshox Deluxe Select+ shock
  • Sonder Nova 29" wheelset

Bundle price €2.449
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Cortex SX Eagle

Short travel 29er full suspension MTB

  • SRAM SX Eagle 1x12 groupset
  • Rockshox Recon RL Silver fork
  • Rockshox Deluxe Select+ shock
  • Sonder Nova 29" wheelset

Bundle price €1.999
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Cortex GX Eagle

Short travel 29er full suspension MTB

  • SRAM GX Eagle 1x12 groupset
  • Rockshox Revelation RC fork
  • Rockshox Deluxe Select+ shock
  • Sonder Alpha 29" wheelset

Bundle price €2.899
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Cortex GX Eagle AXS

Short travel 29er full suspension MTB

  • SRAM GX Eagle AXS 1x12 groupset
  • Rockshox Pike Ultimate fork
  • Rockshox Deluxe Select+ shock
  • Sonder Alpha 29" wheelset

Bundle price €3.749
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Cortex XT

Short travel 29er full suspension MTB

  • Shimano XT 1x12 groupset
  • Rockshox Revelation RC fork
  • Rockshox Deluxe Select+ shock
  • Sonder Alpha 29" wheelset

Bundle price €3.299
  • Khaki
  • Battleship
  • Crayon
  • Brown

Buy Now. Deliveries from 7 March.

Short-travel 29er full suspension mountain bike for epic days over mixed terrain


Fast and agile, Cortex is for epic days over mixed terrain. It comes alive on long technical descents with 120mm travel, big wheels and a stiff responsive frame, making it great fun for the local trails, and also a hot contender for big down-country days.

With bang up to date geometry, Cortex is confidence inspiring with a playful character. Stand up and mash on the pedals out of turns, manual sections of trail and pop off tree stumps, rocks and roots. Smash out short and loose technical climbs, flat out descents and tight techy singletrack sections. The harder you push the bigger you grin.

Cortex frameset is hand-welded from 6061 double butted aluminium with a tapered ovalised top-tube and large section down-tube for a stiff chassis with just enough compliance to get you out of trouble. 66° head angle, 74.5° seat tube angle, 40 mm bottom bracket drop and a 465 mm reach (size large). Cortex’s dialed in geometry and 2.6” tyre clearance offers a comfortable and efficient climbing position for big miles and a stable, spirited platform for smashing up descents.

 


The Features

Up to Date Trail Bike Geometry

Trail bike Agility with Enduro bike stability, the Cortex has a confidence inspiring, stable and forgiving ride.

Metric Shock Standard

Designed around metric shock sizing standard, with lengthened shocks and shorter strokes that increase bushing overlap for more smooth, supple, sensitive and reactive suspension action.​

Horst link suspension design

The tried and tested Horst link suspension design allows the suspension to stay active when braking.​

Tyre Clearance

​Clearance for up to 29 x 2.6in tyres.

Internal Cable Routing

​Internal routing in the front triangle for clean lines.