
Bikes up to 60% offWe monitor over 40,000 bikes daily to find the best prices
Today’s DealsCortex GX Eagle
A 29″ aluminum frame full suspension trail bike with high-end components.
Compare the full range
Manufacturer Price
US$2,999($5,031)| Frame | Aluminum |
|---|---|
| Suspension | Full, 120 / 130mm |
| Fork | Cane Creek HELM |
| Shock | RockShox Deluxe Select+ |
| Wheels | 29″ Aluminum |
| Drivetrain | 1 × 12 |
| Groupset | GX Eagle |
| Brakes | Avid Hydraulic Disc |
| Seatpost | Dropper |
158cm – 171cm
168cm – 180cm
178cm – 189cm
186cm – 199cm
🐐 Estimated
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.

Oct 2022
Not to be confused with Crash Bandicoot’s large-headed nemesis, Sonder’s range-topping trail ripper, the Cortex GX AXS is a bike that combines solid trail-orientated geometry with ridiculous value for money. While there’s an awful lot to like about the bike and it’ll certainly please a lot of riders, a lack of refinement in a number of areas sadly holds it back from shining in the best full suspension mountain bikes segment Cheap SRAM GX AXS?
Mar 2020 · Guy Kesteven
How good is Sonder’s affordable short travel 29er Cortex trail bike? We got a ton of pre-lockdown miles in - and a bit of component swapping - to find out
Well-balanced, affordable, lightweight trail chassis.
Mostly well-sorted very cost-effective componentry
Cane Creek shock upgrade makes it feel great
Other components switchable on request
Very solid pedal response with the stock shock
Stock shock clatters rather than grips and blows through travel
Wooden rear tyre emphasises lack of shock sensitivity
Jul 2019 · Andi Sykes
Andi gets an exclusive first ride review of the latest 120mm travel full-suspension bike from Sonder. Meet the 2020 Sonder Cortex.
| Frame | Aluminum BB Standard: BSA, 73mm, Threaded |
|---|---|
| Fork | Cane Creek Helm MK2 Air, 51mm offset Travel: 130mm Spring Type: Air |
| Shock | RockShox Deluxe Select+, 190mm x 45mm Travel: 120mm |
| Bottom Bracket | SRAM DUB, 73mm English/BSA threaded |
| Headset | Love Mud Rumour, ZS44/28.6 upper, ZS56/40 lower |
| Stem | Love Mud Piskie, 35mm length, 31.8mm bar clamp |
| Handlebar | Sonder Aspect Riser, 31.8mm clamp diameter |
| Saddle | Sonder Abode |
| Seatpost | X-Fusion Manic dropper, X-Fusion remote lever, 125mm drop Type: Dropper |
| Pedals | None |
| Grips | WTB Wafel |
| Rear Derailleur | SRAM GX Eagle, 12-speed |
|---|---|
| Front Derailleur | None |
| Crank | SRAM GX Eagle DUB, 170mm length |
| Shifters | SRAM GX Eagle, 12-speed |
| Cassette | SRAM GX Eagle XG-1275, 12-speed, 10-50 tooth |
| Chain | SRAM GX Eagle, 12-speed |
| Chain Guide | None |
| Brakes | SRAM Guide R, 4-piston, Avid CenterLine rotors (180mm front, 160mm rear) Type: Avid Hydraulic Disc |
| Brake Levers | SRAM Guide R |
| Rims | Sonder Alpha wheelset |
|---|---|
| Spokes | Sonder Alpha wheelset |
| Front Hub | Sonder Alpha wheelset, 110x15mm Boost front, 148x12mm Boost rear with XD driver |
| Rear Hub | Sonder Alpha wheelset, 110x15mm Boost front, 148x12mm Boost rear with XD driver |
| Tires | Front: WTB Vigilante, Light/High Grip, 29" x 2.5", Rear: WTB Trail Boss, Tough/Fast Rolling, 29" x 2.4" |
First added 4 May
Last updated 4 May
Not listed for 1,492 days