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2021 Sonder

Frontier NX Eagle

A 29″ aluminum frame hardtail crosscountry bike with upper mid-range components.
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Manufacturer Price

$1,349
FrameAluminum
SuspensionHardtail, 100mm
ForkRockShox Recon Silver RL
Wheels29″ Aluminum
Drivetrain1 × 12
GroupsetNX Eagle
BrakesAvid Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Frontier NX Eagle
Other Crosscountry bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

40 km/h

Frontier NX Eagle

44 km/h

Similar Bikes

Highest gear

(descending)

Sizing
SM

158cm – 171cm

MD

168cm – 180cm

LG

178cm – 189cm

XL

186cm – 199cm

🐐 Estimated

Rider Fit Notes

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.

Reviews
Singletrack World
Sonder Frontier Deore Rigid review

Dec 2022 · Ben Haworth

These aren’t bikes cluelessly designed by people whose main job is designing sleeping bags. Sonder bikes are designed by real riders.

Read Review

BikeRadar
Sonder Frontier NX Eagle review

Apr 2022 · Mick Kirkman

Sonder’s Frontier is responsive but stiffer and less damped-feeling than some all-day adventure rivals

Highs
  • NX Eagle drivetrain shifts smoothly and cranks feel solid

  • Decent value

Lows
  • Handling doesn’t feel fully engaged on ‘proper’ MTB trails

  • Slightly undamped ride quality

Read Review

Geometry
Specs
Build
Frame

Aluminum

BB StandardBSA, 73mm, Threaded

Fork

RockShox Recon RL Silver

Travel100mm

Shock

None

Bottom Bracket

SRAM DUB, 73mm English/BSA threaded

Headset

FSA Orbit C-40-ACB

Stem

Love Mud Piskie, 55mm length, 31.8mm bar clamp

Handlebar

Love Mud Aspect Riser, 31.8mm clamp diameter

Saddle

Love Mud Abode

Seatpost

Love Mud Membar, 400mm length

TypeRigid

Pedals

None

Grips

WTB Wafel

Groupset
Rear Derailleur

SRAM NX Eagle, 12-speed

Front Derailleur

None

Crank

SRAM NX Eagle DUB, 170mm length

Shifters

SRAM NX Eagle, 12-speed

Cassette

SRAM NX Eagle PG-1230, 12-speed, 11-50 tooth

Chain

SRAM NX Eagle, 12-speed

Chain Guide

None

Brakes

SRAM Level, 2-piston, Avid CenterLine rotors (180mm front, 160mm rear)

TypeAvid Hydraulic Disc

Brake Levers

SRAM Level

Wheels
Rims

Sonder Nova

Spokes

Sonder Nova wheelset

Front Hub

Shimano, 110x15mm Boost front, 148x12mm Boost rear with HG driver

Rear Hub

Shimano, 110x15mm Boost front, 148x12mm Boost rear with HG driver

Tires

WTB Ranger, Comp

Rider Notes
Riders Also Viewed

First added 4 May

Last updated 4 May

Not listed for 1,491 days