Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 29" -
Travel Front 130mm -
Travel Rear 120mm -
Fork Cane Creek HELM
-
Groupset GX Eagle -
Suspension Full -
Drivetrain 1 × 12 -
Brakes Hydraulic Disc
Sizing
Recommended size guide.
SM
158cm - 171cm
MD
168cm - 180cm
LG
178cm - 189cm
XL
186cm - 199cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Aluminum
Suspension Fork
Cane Creek Helm MK2 Air, 51mm offset
Rear Shock
RockShox Deluxe Select+, 190mm x 45mm
Drivetrain
Rear Derailleur
SRAM GX Eagle, 12-speed
Front Derailleur
None
Shift Levers
SRAM GX Eagle, 12-speed
Cassette
SRAM GX Eagle XG-1275, 12-speed, 10-50 tooth
Crank
SRAM GX Eagle DUB, 170mm length
Bottom Bracket
SRAM DUB, 73mm English/BSA threaded
Chain
SRAM GX Eagle, 12-speed
Chain Guide
None
Pedals
None
Wheels
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
Rims
Sonder Alpha wheelset
Spokes
Sonder Alpha wheelset
Tires
Front: WTB Vigilante, Light/High Grip, 29" x 2.5", Rear: WTB Trail Boss, Tough/Fast Rolling, 29" x 2.4"
Brakes
Brakes
SRAM Guide R, 4-piston, Avid CenterLine rotors (180mm front, 160mm rear)
Brake Levers
SRAM Guide R
Cockpit
Stem
Love Mud Piskie, 35mm length, 31.8mm bar clamp
Handlebar
Sonder Aspect Riser, 31.8mm clamp diameter
Grips
WTB Wafel
Headset
Love Mud Rumour, ZS44/28.6 upper, ZS56/40 lower
Seat
Saddle
Sonder Abode
Seatpost
X-Fusion Manic dropper, X-Fusion remote lever, 125mm drop
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.433 mm | 1.377 mm | 1.323 mm | 1.289 mm |
| Bottom Bracket Height | 334 mm | 334 mm | 334 mm | 334 mm |
| Front Center | 730 mm | 749 mm | 776 mm | 797 mm |
| Rake | 54 mm | 51 mm | 49 mm | 46 mm |
| Trail | 108 mm | 111 mm | 113 mm | 116 mm |
| Stack | 602 mm | 606 mm | 615 mm | 625 mm |
| Reach | 420 mm | 440 mm | 465 mm | 485 mm |
| Top Tube Length | 587 mm | 608 mm | 636 mm | 658 mm |
| Seat Tube Angle | 74.5 ° | 74.5 ° | 74.5 ° | 74.5 ° |
| Seat Tube Length | 400 mm | 425 mm | 465 mm | 485 mm |
| Head Tube Angle | 66 ° | 66 ° | 66 ° | 66 ° |
| Head Tube Length | 100 mm | 105 mm | 115 mm | 125 mm |
| Chainstay Length | 442 mm | 445 mm | 447 mm | 450 mm |
| Wheelbase | 1169 mm | 1191 mm | 1220 mm | 1244 mm |
| Bottom Bracket Drop | 40 mm | 40 mm | 40 mm | 40 mm |
| Wheels | 29" | 29" | 29" | 29" |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |
Model Overview
Cortex GX Eagle is part of the Sonder Cortex model. Sonder released 3 bikes variations of this model so far. Take a sneak peek at all Sonder Cortex bikes models from 2021, by clicking here.
Model range prices
Sonder Cortex SX Eagle 2021 is the most economical model, with a starting price of 1949$. Sonder Cortex GX Eagle 2021 on the other hand costs 2999$, and is the most expensive model.
Safety
Make sure you wear a helmet on every ride, and that your bike performs well. In short, this means checking the tires, brakes, and chain to make sure everything is in good working order.
Trail bikes average price
Our math shows that the average cost of a dependable Trail bike is 2762$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Trail bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
When Sonder released this model in 2021, its price was 2999$. Doing a quick comparison, we notice that Cortex GX Eagle price is 8.58% higher than the average cost of a Trail bike.
Overview of components
Fork
The Cane Creek HELM is included from the factory. It has a travel distance of 130mm. Bike forks are good shock absorbers and provide a smooth ride and a great experience. In short, make sure you choose one with a decent fork when you purchase your dream bike.
Rear Shock
The shock that’s installed on this bike is RockShox Deluxe Select+, with a travel distance of 120mm. Rear shocks offer better comfort, better traction, and better cornering. This allows for quicker riding on rough roads and trails. In short, if you want smooth rides, get a full-suspension bicycle.
Wheels size
When leaving the production line, the Cortex GX Eagle model has 29″ aluminum wheels. With 29″ wheels, bumps will feel lighter and you’ll gain more speed on descends, compared to smaller wheel-sized bikes. However, these wheels are not ideal for smaller people.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Hydraulic Disc brakes. Hydraulic disc brakes are perfect for mountain biking, road cycling, and commuting. To sum up, your safety is in good hands.
Sizes
There are 4 sizes available for this model. Rider height can be anywhere between 158 cm – 199 cm (5.18 ft – 6.53 ft). In conclusion, you won’t have a problem finding one that suits you.
Dropper post
A dropper post is included with the Cortex GX Eagle. If you are a technical rider, a dropper post is essential. A dropper post provides increased safety while riding. The lever system, allows you to move your saddle up and down, which is very useful on climbs and descends.