Sonder Cortex GX Eagle

Sonder Cortex GX Eagle

[Bikes] Complete Bikes

$3,360.00

Fast and agile short travel full sus 29er mountain bike with SRAM GX Eagle drivetrain, Revelation fork and Deluxe rear shock

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All Sonder bikes can be customised.
You can make your selections on the next page.

Build your bike

Select your size and make any changes you want from the standard build. When you’re done, hit Add to Bag at the bottom of the page

  • Frame

    Size
    Please select your Size

    Configure your Frame

    size

    • Large

    • Medium

    • Small

    • X-Large

  • Brakes

    Brakeset
    SRAM Guide R Brakes 180F 160R

    Configure your Brakes

    Brakeset

    • SRAM Guide R Brakes 180F 160R

    • SRAM Guide R Brakes 180F 160R
  • Finishing kit

    Grips
    Love Mud Clutch Black
    Handlebar
    Love Mud Aspect Riser 780mm
    Headset spacers
    Love Mud Rings Black
    Headset
    Love Mud Rumour IS42/IS52
    Saddle
    Love Mud Abode Black
    Seatpost
    X-Fusion Manic Drop Seatpost 31.8mm / 150mm 31.8mm / 125mm
    Stem
    Love Mud Piskie Stem 31.8mm / 35mm 31.8mm / 45mm 31.8mm / 55mm

    Configure your Finishing kit

    Grips

    • Love Mud Clutch Black

    • Love Mud Clutch [OEM]

    Handlebar

    • Love Mud Aspect Riser 780mm

    • Love Mud Aspect Riser [OEM]

    Headset spacers

    • Love Mud Rings Black

    • Love Mud Rings [OEM]

    Headset

    • Love Mud Rumour IS42/IS52

    • Love Mud Rumour [OEM]

    Saddle

    • Love Mud Abode Black

    • Love Mud Abode [OEM]

    Seatpost

    • X-Fusion Manic Drop Seatpost 31.8mm / 150mm

    • X-Fusion Manic Drop Seatpost
    • X-Fusion Manic Drop Seatpost 31.8mm / 125mm

    • X-Fusion Manic Drop Seatpost

    Stem

    • Love Mud Piskie Stem 31.8mm / 35mm

    • Love Mud Piskie Stem [OEM]
    • Love Mud Piskie Stem 31.8mm / 45mm

    • Love Mud Piskie Stem [OEM]
    • Love Mud Piskie Stem 31.8mm / 55mm

    • Love Mud Piskie Stem [OEM]
  • Groupset

    Groupset
    SRAM GX Eagle Groupset 175mm 10-50

    Configure your Groupset

    Groupset

    • SRAM GX Eagle Groupset 175mm 10-50

    • SRAM GX Eagle Groupset 175mm 10-50
  • Suspension

    Fork
    Rockshox Revelation RC 29 / 130mm
    Rear shock
    Rockshox Deluxe Select+ / 190x45

    Configure your Suspension

    Fork

    • Rockshox Revelation RC 29 / 130mm

    • Rockshox Revelation RC

    Rear shock

    • Rockshox Deluxe Select+ / 190x45

    • Rockshox Deluxe Select+ / 190x45
  • Wheels

    Front tyre
    WTB Vigilante Light High Grip / 29 / 2.5
    Inner tubes
    WTB Inner Tube 29 / 1.9-2.3
    Rear tyre
    WTB Trail Boss Tough Fast Rolling / 29 / 2.4
    Wheelset
    Love Mud Hobo 29er Wheelset XD

    Configure your Wheels

    Front tyre

    • WTB Vigilante Light High Grip / 29 / 2.5

    • WTB [OEM] Vigilante

    Inner tubes

    • WTB Inner Tube 29 / 1.9-2.3

    • WTB [OEM] Inner Tube

    Rear tyre

    • WTB Trail Boss Tough Fast Rolling / 29 / 2.4

    • WTB [OEM] Trail Boss

      #N/A

    Wheelset

    • Love Mud Hobo 29er Wheelset XD

    • Love Mud Hobo 29er Wheelset [OEM]
Initial Price
$3,360.00
Extras
$0.00
Grand Price
$3,360.00
Go to Checkout
Description
At a Glance

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

  • Short travel 29er full suspension 130 front and 120mm rear shock
  • Agile over mixed terrain perfect for full day epic rides
  • Well behaved but comes alive on technical descents and UK trail centres
  • 2.2” to 2.6” 29er

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.

Reviews
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
Medium
Riders between 5ft 6in and 5ft 10in
Large
Riders between 5ft 9in and 6ft 2in
X-Large
Riders of 6ft 2in +

Cortex

Size Small Medium Large X-Large
ST - Seat tube 400 425 465 485
TT - Top tube 587 608 636 658
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 442 445 447 450
BB - BB drop 40 40 40 40
FO - Fork offset 51 51 51 51
WB - Wheelbase 1169 1191 1220 1244
SO - Stand over TBC TBC TBC TBC
RE - Reach 420 440 465 485
SK - Stack 602 606 615 625
Tyre Diameter 755 755 755 755
Fork Axle to Crown 540 540 540 540
Build Spec
Build Cortex GX Eagle Revelation
Frameset
Frame Cortex
Rear Shock Rockshox Deluxe Select+
Fork Rockshox Revelation RC, 130 mm Travel, 29"
Headset Love Mud Rumour
Spacers Love Mud Rings 35 mm
Seatclamp Love Mud Silent Partner 34.9 mm
Groupset
Brake Front SRAM Guide R
Brake Rear SRAM Guide R
Rotor Front Avid Centreline 160 mm
Rotor Rear Avid Centreline 180 mm
Rear Mech SRAM GX Eagle
Shifter Rear SRAM GX Eagle
Chainset SRAM GX Eagle DUB, 175 mm, 34T chainset
Chain SRAM GX Eagle
Cassette SRAM XG1275 Eagle, 10-50T
Bottom Bracket SRAM DUB
Finishing Kit
Stem Love Mud Piskie Stem, 31.8 mm, 35 mm
Seatpost X-Fusion Manic Drop Seatpost, 31.6 mm, 150 mm drop
Saddle Love Mud Abode
Grips Love Mud Clutch
Handlebar Love Mud Aspect Riser
Wheels
Rims Love Mud Hobo 29er / Shimano
Tyre Rear WTB Trail Boss 2.4, Tough Fast Rolling
Tyre Front WTB Vigilante 2.5, Light High Grip
Tubes WTB
Weight
Frame (inc shock) S: TBC M: TBC L: TBC XL: TBC
Built S: TBC M: TBC L: TBC XL: TBC
FAQs
TBC
Frame Spec
Alloy 29er short travel full suspension trail bike
Weight (kg): S: 2.73; M: 2.91; L: 3.05; XL: 3.11
Hydroformed and custom butted alloy frame tubing
Internal cable routing
Rear Shock: Rockshox Deluxe Select+ 190 x 45 mm
Horst link suspension layout
120 mm rear travel; 130 mm fork travel
Clearance for up to 29” x 2.6 in wide tyres
73 mm BSA threaded bracket shell
148 x 12 mm rear thru-axle
31.6mm seat tube, 34.9mm clamp
ZS44/28.6| ZS56/40 headset (frame and rear shock does not come with headset)
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.