Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 29" -
Travel Front 130mm -
Travel Rear 120mm -
Fork RockShox Revelation RC
-
Groupset NX 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
RockShox Revelation RC, 51mm offset
Rear Shock
RockShox Deluxe Select+, 190mm x 45mm
Drivetrain
Rear Derailleur
SRAM NX Eagle, 12-speed
Front Derailleur
None
Shift Levers
SRAM NX Eagle, 12-speed
Cassette
SRAM NX Eagle PG-1230, 12-speed, 11-50 tooth
Crank
SRAM NX Eagle DUB, 170mm length
Bottom Bracket
SRAM DUB, 73mm English/BSA threaded
Chain
SRAM NX Eagle, 12-speed
Chain Guide
None
Pedals
None
Wheels
Front Hub
Shimano, 110x15mm Boost front, 148x12mm Boost rear with HG driver
Rear Hub
Shimano, 110x15mm Boost front, 148x12mm Boost rear with HG driver
Rims
Sonder Nova
Spokes
Sonder Nova 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 T, 4-piston, Avid CenterLine rotors (180mm front, 160mm rear)
Brake Levers
SRAM Guide T
Cockpit
Stem
Love Mud Piskie, 35mm length, 31.8mm bar clamp
Handlebar
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 |
|---|---|---|---|---|
| Bottom Bracket Height | 334 mm | mm | 334 mm | 334 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 | mm | 447 mm | 450 mm |
| Bottom Bracket Drop | 40 mm | 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 |
About this model
Cortex NX Eagle completes the Sonder Cortex model. Sonder launched 3 bikes of this model so far. Take a sneak peek at all Sonder Cortex bikes models from 2021, by clicking here.
Model range prices
The most economical model, the Sonder Cortex SX Eagle 2021 has a starting price of 1949$. Sonder Cortex GX Eagle 2021 on the other hand is the most expensive at 2999$.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Trail bikes average price
According to our calculations, the average cost of a Trail bike that is reliable is 2762$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Trail bike. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 2499$. Doing a quick comparison, we notice that Cortex NX Eagle price is 10.52% lower than the average cost of a Trail bike.
Overview of components
Fork
The fork installed on this bike is the RockShox Revelation RC model. The travel on this model is 130mm. Bike forks are great for shock absorption and provide you with a smooth ride. To sum up, when buying a bicycle, make sure you get a fork that is capable of delivering decent travel.
Rear Shock
The Cortex NX Eagle has a rear shock with a travel of 120mm. The model RockShox Deluxe Select+ is the one installed in this bike. Rear shocks give you increased comfort, control, and traction, which is important when cornering or braking. This allows you to ride faster on bumpy roads. In conclusion, to increase your riding experience, get a bike with a rear shock if possible.
Wheels
The Cortex NX Eagle 2021 bike is equipped with 29″ aluminum wheels when leaving the factory. Having 29″ wheels means that you need less fork travel, leading to a reduction of the pedal bob effect. However, the 29″ wheels will add a little more weight to the bike itself.
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, these are ideal for anyone.
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, it won’t take much to find one that’s right for you.
Dropper post
The Sonder model is also equipped with a dropper post. A dropper post is a must-have these days if you’re riding anything remotely technical. The main benefit of a dropper post is increased safety while riding. As mentioned above, the lever system allows you to quickly move the saddle out of the way when approaching descents or trail obstacles.