Name: Frontier NX Eagle Multi-activity trail bike
Brand: Sonder
Price: 1099.0 GBP
Availability: InStock
Rating: 5.00 (18 reviews)

Aaron Jackson

Model is 180cm (5' 11"), wears a size medium and regular leg length.

Ben Field

Model is 180cm (5' 11"), wears a size medium/large ,medium bottoms and long? leg length.

Dan Dean

Model is 169cm (5' 6.5"), wears a size medium ,32 bottoms and short leg length.

Hannah Murray

Model is 172.7cm (5' 8"), wears a size 10 and long leg length.

Rachel Gatehouse

Model is 165cm (5' 5"), wears a size 10 and long leg length.

Aaron Jackson

Model is 180cm (5' 11"), wears a size medium and regular leg length.

Ben Field

Model is 180cm (5' 11"), wears a size medium/large ,medium bottoms and long? leg length.

Dan Dean

Model is 169cm (5' 6.5"), wears a size medium ,32 bottoms and short leg length.

Hannah Murray

Model is 172.7cm (5' 8"), wears a size 10 and long leg length.

Rachel Gatehouse

Model is 165cm (5' 5"), wears a size 10 and long leg length.

[Bikes] Complete Bikes

Special Offer

Frontier NX Eagle

Multi-activity trail bike

£1,099 £1,349

or from £550/mo

Select Options

Customize

Select Accessories

Reset

Quick, lightweight modern mountain bike with SRAM NX Eagle 1x12 groupset and Rockshox Recon Silver RL fork.

Buy Now. Deliveries from 20 May.

Select Options

Edit

Size
- Small
- Medium
- Large
- X-Large
Colour
- Jet Black
- Forest Green
- Chilli

Size:
Colour:

Customise and buy now. Deliveries from

Customize

Edit

Every Sonder bike is built to order so tell us exactly how you want it. Make any changes you want from the standard build and when you're done, just hit “Add to Bag” at the bottom of the page.

Handlebar

Sonder Aspect Riser 780mm

+£0.00

Sonder Horizon Flat 720mm

+£0.00

Sonder Confucius

~~+£34.99~~ +£29.99

Sonder Horizon Carbon Flat Black

~~+£79.99~~ +£49.99

sonder aspect carbon flat handlebar flatbar

Sonder Aspect Carbon Riser 780mm

~~+£79.99~~ +£49.99

Saddle

Sonder Abode Black / 138

+£0.00

Sonder Abode Black / 158

+£0.00

Brooks Cambium C17 Saddle [OEM] / All Weather / Black

Brooks Cambium C17 Saddle / All Weather / Black

~~+£114.99~~ +£92.49

Sonder Zone 152 / Black

~~+£34.99~~ +£29.99

Sonder Kura

~~+£47.99~~ +£39.99

Seatpost

Sonder Seatpost / 31.6mm / 400mm

+£0.00

X-Fusion Manic Drop Seatpost and Lever 31.6mm / 125mm

+£119.99

X-Fusion Manic Drop Seatpost and Lever 31.6mm / 150mm

+£119.99

X-Fusion Manic Drop Seatpost and Lever 31.6mm / 170mm

+£119.99

Cane Creek eeSilk+ 31.6mm / Alloy

~~+£229.99~~ +£184.99

Cane Creek eeSilk+ [OEM] / 31.6mm / Alloy

Cane Creek eeSilk+ / 31.6mm / Alloy

+£179.99

Stem

Sonder Piskie 31.8mm / 35mm

+£0.00

Sonder Piskie 31.8mm / 45mm

+£0.00

Sonder Piskie 31.8mm / 55mm

+£0.00

Sonder Talo 35

~~+£44.99~~ +£37.49

Sonder Talo 45mm

~~+£44.99~~ +£37.49

Forks

Rockshox Recon RL Silver 100mm / 29

+£0.00

Rockshox Reba RL / 100mm / 29

+£299.99

Rockshox Sid SL Ultimate [OEM] / 29 / 100mm

Rockshox Sid SL Ultimate / 29 / 100mm

+£574.99

Tubes

WTB Inner Tube / 29 / 2.2-2.4 Black

+£0.00

Tubeless Tyre Upgrade and Setup

+£44.99

Wheels

Sonder Nova XC Wheelset / UK Build HG

+£0.00

Sonder Nova XC Wheelset Shimano

+£0.00

Sonder Alpha 27.5 [OEM] Wheelset / UK Build

Sonder Alpha 27.5 Wheelset / UK Build HG

~~+£329.99~~ +£169.99

Sonder Alpha 29 XC [OEM] Wheelset / UK Build

Sonder Alpha 29 XC Wheelset / UK Build HG

~~+£329.99~~ +£169.99

Select Accessories

Edit

Bottle Cages

No Bottle Cages (none)

+£0.00

Sonder Buzz Wire Single

~~+£5.49~~ +£4.99

Sonder Buzz Wire Pair

~~+£10.99~~ +£8.99

love mud side blade side loading bottle cage left

Sonder Sideblade Left Entry / Black

~~+£6.99~~ +£5.99

love mud side blade side loading bottle cage right

Sonder Sideblade Right Entry / Black

~~+£6.99~~ +£5.99

Sonder Blade Black

~~+£17.99~~ +£14.99

Sonder Blade Black / Pair

~~+£29.99~~ +£24.99

Sonder Ti Wire Bottle Cage Single

~~+£44.99~~ +£37.49

Sonder Ti Wire Bottle Cage Pair

~~+£79.99~~ +£64.99

Front Lights

No Front Light (none)

+£0.00

Hadron

~~+£99.99~~ +£79.99

Rear Lights

No Rear Light (none)

+£0.00

Lights Accessories

No Bike Light Accessories (none)

+£0.00

Garmin Outfront Mount / Black

~~+£24.99~~ +£19.99

Helmet Mount Black

~~+£7.99~~ +£6.99

Mudguards

No Mudguards (none)

+£0.00

Sonder Fender Front MTB

~~+£6.99~~ +£5.99

Pedals

No Pedals (none)

+£0.00

Sonder Reko

~~+£59.99~~ +£49.99

sonder Jekyll clipless and flat hybrid pedal

Sonder Jekyll Black

~~+£79.99~~ +£64.99

Sonder Slingshot Black

~~+£79.99~~ +£64.99

Sonder Distortion

~~+£69.99~~ +£59.99

Initial Price

Frontier NX Eagle / Select a frame...

£1,099.00

Extras

£0.00

Total Price

£1,099.00

Buy Now. Deliveries from 20 May.

At a glance

SRAM NX Eagle 12-speed groupset
Rockshox Recon Silver RL fork
Sonder Nova 27.5 / 29" XC wheelset
6061 aluminium frame

Frontier is our multi-activity hardtail mountain bike. Ride hard at the trail centre, load it up for a midweek bikepacking trip, pocket your passport and continue around the world. Frontier is an adaptable off-road explorer.

The geometry is for long day comfort but it’s no slouch.

The 6061 aluminium frame provides a durable and stiff chassis giving a responsive kick as you demand power when the slope steepens or enjoy feedback and precision through the corners.

Available as a fully rigid or with 100mm suspension fork. Set it up for XC race speed or for all day big mile comfort.

Tyre clearance gives you the choice of 27.5+ or 29in wheelsets. Bolt through 148mm boost rear spacing provides the benefit of stronger, stiffer and more efficient wheels.

Features

Tuned for all-round capability

Built for a balance of cross country efficiency and trail centre capability. A favourite with bikepackers looking for all-day comfort and performance.

Light and clean

Clean lines thanks to internal cable routing. Frontier also incorporates routing for a dropper seat post. The 6061 aluminium tubing is durable, light, low maintenance and stiff.

Wider tyres. More grip.

Extra width between the chainstays gives you the choice of running 27.5+ tyres up to 3 inches or 29 inch tyres up to 2.5 inches.

Made for stronger wheels

Designed around bolt through Boost 148mm rear spacing providing the benefit of stronger, stiffer and more efficient wheels.

Wilderness trail features

Chainstay mounted disc brakes. And triple bottle mounts.

Build Spec

Frameset
Frame:	Frontier Frame \| 6061 Aluminium \| T6 Heat-Treated
Fork:	RockShox Recon Silver RL \| 100mm (travel)
Headset:	FSA Orbit C-40-ACB

Groupset
Shifters:	SRAM NX Eagle Trigger \| 1x \| 12-speed
Brakes:	SRAM Guide T \| Hydraulic \| Post mount
Rotors:	SRAM Centerline \| 180mm (front), 160mm (rear) \| 6-bolt
Rear derailleur:	SRAM NX Eagle \| Long cage \| 12-speed
Chainset:	SRAM NX Eagle DUB \| 170mm \| 32t
Cassette:	SRAM PG1230 \| 11-50t \| 12-speed
Chain:	SRAM NX Eagle \| 12-speed
Bottom bracket:	SRAM DUB \| BSA \| 73mm

Wheelset
Wheels:	Sonder Nova 27.5" or 29 XC
Tyres:	Goodyear Peak \| 29 x 2.4" \| Black
Tubes:	WTB \| 29 x 2.2-2.4"

Finishing kit
Handlebars:	Sonder Aspect Riser \| 780mm
Stem:	Sonder Piskie
Seatpost:	Sonder Seatpost \| 31.6mm
Saddle:	Sonder Abode
Grips:	Sonder Clutch \| Black

Weight
Frame:	S: 1.8kg; M: 1.85kg; L: 1.95kg; XL: 2.05kg;
Build:	S: 11.35kg; M: 11.4kg; L: 11.5kg; XL: 11.6kg;

Pedals not included with full builds
Specifications are subject to change without notice

Geometry and Sizing

Sizing

It is important to get the right size bike, if the bike fits you well it will be faster, more comfortable and easier to handle.

Generally we recommend:
Small: Riders between 5ft 2in and 5ft 7in (157-170cm)
Medium: Riders between 5ft 6in and 5ft 10in (167-177cm)
Large: Riders between 5ft 9in and 6ft 2in (175-187cm)
X-Large: Riders of 6ft 2in + (187cm)

Size	Small	Medium	Large	X-Large
ST - Seat tube	380	430	480	520
TT - Top tube	563.1	597.3	621.6	647.3
HT - Head tube	110	115	130	150
HA - Head angle	68	68	68	68
SA - Seat angle	73	73	73	73
CS - Chainstay	445	445	445	445
BB - BB drop	50	50	50	50
FO - Fork offset	51	51	51	51
WB - Wheelbase	1095.7	1131.3	1157	1184.5
SO - Stand over	764	793.9	824.6	852.6
RE - Reach	390	420	440	460
SK - Stack	566.1	580.1	594	612.5

Frame Spec

Frame Weight: S: 1.84kg; M: 1.9kg; L: 1.98kg; XL: 2.03kg
Rigid Fork Weight - uncut: 1kg
6061 Aluminium frame
Optimised for rigid or 100mm suspension forks
Internal cable routing through downtube
Bolt Through Boost 148mm rear spacing for wheel strength and optimal chainline
Fork built around Bolt Through Boost 110mm spacing
Threaded 73mm BSA BB shell for no-creak assembly
Chainstay mounted disc brake for clean lines and damage protection
Triple bottle cage mount on downtube
Use a seat clamp with integrated mounts for pannier rack compatibility
Clearance for 3 inch 27.5+ or 2.5 inch 29er tyres
Reverb Stealth port
EN 14766 compliant

Member Rewards

Sonder Camino

World ready

Ride with style

Alpkit Outlet

Aaron Jackson

Ben Field

Dan Dean

Hannah Murray

Rachel Gatehouse

Aaron Jackson

Ben Field

Dan Dean

Hannah Murray

Rachel Gatehouse

Select Options

Customize

Select Accessories

Select Options

Customize

Handlebar

Saddle

Seatpost

Stem

Forks

Tubes

Wheels

Select Accessories

Bottle Cages

Front Lights

Rear Lights

Lights Accessories

Mudguards

Pedals

Initial Price

Extras

Total Price

At a glance

Tuned for all-round capability

Light and clean

Wider tyres. More grip.

Made for stronger wheels

Wilderness trail features

Sizing