Cortex Frameset

Short travel 29er full suspension MTB frame

$1,849.00

With bang up to date geometry, Cortex is confidence inspiring with a playful character. Stand up and mash on the p...

Cortex Frameset

Cortex Frameset
Cortex Frameset
Cortex Frameset
Cortex Frameset
Photos for illustration purposes. Please check the bike spec for detailed component listings.
Sonder Cortex Frame in Khaki
Sonder Cortex frame in Battleship
Cortex Frameset
brown

Cortex Frameset

Short travel 29er full suspension MTB frame

$1,849

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...

Read more

Read more

Need help choosing a bike or technical advice?


  • Open a Live Chat
  • Pop into a store 7 days a week
  • Call a Sonder Customer Hero on 01773 417006
  • Email us at support@alpkit.com


Buy Now. In stock for same day despatch.

Cortex Frameset

Short travel 29er full suspension MTB frame

$1,849

Buy Now. In stock for same day despatch.

  • Please select

    • Customise

    Every Sonder bike is built to order so tell us exactly how you want it. Make any changes you want from the standard build and when you’re done, just hit “Add to bag” at the bottom of the page.

    Accessories

  • Headset

    • No Headset

      • No Headset

    • FSA Orbit C-40-ACB Headset / 7.8mm Spacer

      +$34.99

      • FSA Orbit C-40-ACB Headset / 7.8mm Spacer

  • Shock

    • Rockshox Deluxe Select+ / 190x45

      • Rockshox Deluxe Select+ / 190x45

    • Cane Creek DBair IL 190 / 45

      +$139.99

      • Cane Creek DBair IL
Initial Price
$1,849
Frame
Cortex Frameset
Size
Colour
Extras
$0
Total Price
$1,849

Buy Now. In stock for same day despatch.

Description

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. With 120mm travel and big wheels, Cortex is for mountain trails and down-country epics.

At a glance

Hand-welded from 6061 double butted aluminium frame for epic days over mixed terrain.

..Read more
  • Fast and agile short travel full sus 29er; perfect for mixed terrain and day long epics
  • Frame: Sonder Cortex 120 mm travel, hand-welded 6061 double butted aluminium
  • Rockshox Deluxe Select+ / 190x45
  • Up to date geometry for trail bike agility and enduro bike stability

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.

Read less
Features
Build Spec
BuildCortex Frame
Frameset 
Frame:Cortex Frame
Fork:No Fork
Shock:Rockshox Deluxe Select+ / 190x45
  
Weight 
Frame:S: 1.97 kg; M: 2.0 kg; L: 2.1 kg; XL: 2.14 kg
Built:S: 12.4 kg; M: 12.65 kg; L: 13.8 kg; XL: 13.9 kg
Pedals not included with full builds 
Geometry and Sizing

Sizing

It is important to get the right size bike, if the bike fits it will be faster, more comfortable, and easier to handle. You can also take into consideration the standover height to ensure you pick a bike that will be a good fit. If you measure your inside leg and ensure there is a minimum of an inch from the toptube to your crotch this will give you enough seatpost adjustment to find your optimum saddle height.

Generally we recommend:
Small: Riders between 5ft 2in and 5ft 7in (157-170cm)
Medium: Riders between 5ft 6in and 5ft 10in (167-177cm)
Large: Riders between 5ft 9in and 6ft 2in (175-187cm)
X-Large: Riders of 6ft 2in + (187cm)

Transmitter

Size Small Medium Large X-Large
ST - Seat tube 405 425 465 485
TT - Top tube 575.6 597.3 625.6 649
HT - Head tube 100 105 115 125
HA - Head angle 66 66 66 66
SA - Seat angle 74.5 74.5 74.5 74.5
CS - Chainstay 445 445 445 445
BB - BB drop 52 52 52 52
FO - Fork offset 46 46 46 46
WB - Wheelbase 1169.1 1191.2 1220.2 1244.3
SO - Stand over 749.7 768.4 782.6 796.6
RE - Reach 420 440 465 485
SK - Stack 601.7 606.3 615.4 624.6
Frame Spec

Alloy 29er short travel full suspension trail bike

Weight: S: 2.8kg; M: 2.9kg; L: 3.0kg; XL: 3.08kg (without shock)
Hydroformed and custom butted alloy frame tubing
Internal cable routing
Rear Shock: Rockshox Deluxe Select+ 190 x 45mm
Horst link suspension layout
120mm rear travel; 130mm fork travel
Clearance for up to 29 x 2.6" wide tyres
73mm BSA threaded bracket shell
148 x 12mm rear thru-axle
31.6mm seat tube, 34.9mm clamp
Headset: IS42/28.6 | IS52/40 (not included)

Reviews
Kudos
Bike Radar Reviews Sonder Cortex

Bike Radar have their eyes set on the new Sonder Cortex

"Sonder has added to its bicycle range with the Cortex trail bike — a 120mm travel full suspension 29er that starts at £1,500 and is designed, it seems, to do just about anything."

Read the full review here.

Guy Kesteven at Bike Perfect Reviews the Sonder Cortex

We handed the Cortex over to Guy Kesteven for some real trail testing.

Cortex is a light, well-shaped frame that balances instant familiarity with extra confidence on faster, rowdier trails. Add an easy to set up fork, decent stop, go and finishing kit rolling on sturdy wheels with a properly surefooted front tyre and you’ve got a great package for the price.

Read the full review here.

Sonder Cortex: Singletrack First Ride Review

Andi at Singletrack gets an exclusive first ride review of the latest 120mm travel full-suspension bike from Sonder. Meet the 2020 Sonder Cortex.

"While riding the Sonder it felt just as fast as my big bike but sharper to corner, easier to hop and overall a hell of a lot of fun to ride, and I cannot wait to get on it again."

Read the full first ride review over on Singletrack.