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Sonder Broken Road GX Eagle Reba

Multi-day expedition, titanium mountain bike with SRAMs new GX Eagle drivetrain, RockShox Reba forks, and Love Mud Rumpus 650b+ boost wheels; designed for big mountains and fully-loaded for adventures.


Available on finance, from per month*

Pictures are for illustration and some components and finishing kit of this build may be different. Please refer to the detailed spec sheet before placing an order.

How To Order

All our bikes are built individually to order. If you want to change any part of the spec to suit your needs then get in touch.

  • Broken Road Frame

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Please allow 20 working days for us to build, check, pack and despatch your Sonder.

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Alpkit Ltd acts as a credit intermediary and offer credit products provided exclusively by Klarna Bank AB (publ). Klarna Bank AB (publ) is Authorised by the Swedish Financial Services Authority (Finansinspektionen) and is subject to limited regulation by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request. Finance is only available to permanent UK residents aged >18, subject to status, terms and conditions apply. Registered office: Sveavägen 46, 111 34 Stockholm, Sweden. Corporation ID number: 556737-0431.

The off-road adventurer

At A Glance

  • Hard tail expedition mountain bike
  • Frame: Sonder Broken Road, hand welded titanium, trail bike geometry
  • Drivetrain: SRAM GX Eagle
  • Forks: Rockshox Reba
  • Wheelset: Love Mud Rumpus 650b+
  • Tyres: WTB Ranger 2.8” tyres
  • Adjustable sliding dropouts allow 650b+, 29 in and either singlespeed, derailleur or internal hub gears
  • Stealth dropper routing
  • Rear rack mounts
  • Clinically created geometries enhance riding and load capacity

Plush 650b+ tyres rapidly steamroll over everything whilst giving a corner grip that will make a muddy WRT a breeze.

Engineered for durability, lightness, and strength, Broken Road’s titanium frame is built to withstand the roughest of terrains whilst giving you a smooth ride.

A relaxed head angle strikes a perfect balance between comfy uphill grinding and hair-raising downhill whooping, whilst a longer wheelbase wonderfully balances precision and handling.

Broken Road’s wide, ovalised top tube gives vertical compliance but lateral stiffness, combining speed with control, and makes it easier to keep your luggage in place when riding over rough ground.

Broken Road’s titanium frame is semi-fat ready, designed for optimum use with 650b+ wheels. These can be swapped out for 29ers to help you tackle any adventure.

GX Eagle Drivetrain

Simple, light, tough, and reliable; the SRAM GX Eagle understands that when adventure is on the cards, all you want to do is put your feet on the pedals and ride. No faff.

The 12 speed, 10 – 50 tooth groupset combines easy-going versatility with maximum performance, giving crisp shifting, quiet operation, and silky smooth pedalling feel.

A super wide gear range lets you dictate your pace, whether you’re tackling tough inclines, sprinting on the flats, or letting loose on the descents. An open design facilitates mud clearance and boosts durability.

The GX crankset, with 2 tooth profile chainring, bolsters ultimate chain control, and Flowlink technology enhances chain guiding, increases longevity, and heightens wear resistance.

Elegant titanium tubing

Climb aboard and experience the famed resilience of titanium. No other material is as durable, lasts as long, or looks as good, and Broken Road’s aeronautical grade titanium tubing isolates the rider from shock, gives an efficient ride, and maximizes storage potential. Thanks to the low standover height and rider clearance, you won’t have to make any compromises when riding over rough terrain either.

650b+ ready

Designed for optimum use with 650b+ (semi-fat) wheels which help you to tackle any adventure. The plus-sized wheels cruise over obstacles, hold momentum, and give enhanced control thanks to a larger contact patch.

Trail bike geometry

The long wheelbase combines precision and control, giving you the flexibility to adjust riding position easily. The frame is designed with a relaxed head angle, creating the perfect set up for eating up the miles over any surface, and striking the balance between comfortable uphill grinding and hair-raising downhill whooping.

Adjustable sliding dropouts

Adjustable sliding dropouts let you lengthen your Broken Road for eating up the miles or shorten it for the technical, steep trails, and allow for either 650b+ or 29” wheels, and either singlespeed, derailleur, or internal hub gears.

Rear rack mount lugs

Rack mounts allow you to load up with panniers.

Frame spec

Titanium is lightweight, strong and durable make it an ideal construction material for bike frames. No other material is as durable, lasts as long, or looks as good. Our frames are handmade and come with a 10 year frame warranty

Weight (kg): S: 1.96; M: 1.98; L: 2.0 ; XL: 2.2
3Al/ 2.5V Aeronautical Grade Hand Welded Titanium Frame
148 mm boost thru axle standard
Rear rack mount lugs
Headset: IS42/IS52
Seatpost: 31.6 mm
Seat tube OD: 34.9 mm
73 mm BB shell

It is important to get the right size bike, if the bike fits it will be faster, more comfortable, and easier to handle. You can also take into consideration the standover height to ensure you pick a bike that will be a good fit. If you measure your inside leg and ensure there is a minimum of an inch from the top tube to your crotch this will give you enough seat post adjustment to find your optimum saddle height.

Generally we recommend:

Riders between 5ft 2in and 5ft 7in
Riders between 5ft 6in and 5ft 10in
Riders between 5ft 9in and 6ft 2in
Riders of 6ft 2in +
Frame size
Size Small Medium Large X-Large
ST - Seat tube 395 445 470 508
ETT - Effective Top tube 592 616 644 668
TT - Top tube 600 615 628 646
HT - Head tube 120 135 145 160
HA - Head angle 68 68 68 68
SA - Seat angle 73 73 73 73
CS - Chainstay 440 - 460 (adjustable) 440 - 460 (adjustable) 440 - 460 (adjustable) 440 - 460 (adjustable)
BB - BB drop 58 58 58 58
FO - Fork offset 50 50 50 50
WB - Wheelbase 1142 1154 1168 1190
SO - Stand over 736 767 782 808
RE - Reach 410 430 455 475
SK - Stack 595 609 618 632
Build SRAM GX Eagle
Frame Sonder Broken Road Broken Road 3Al/ 2.5V Aeronautical Grade, Hand Welded Titanium
Fork Rockshox Reba RL, Solo Air, 100mm travel, Boost 29/27.5+
Headset Love Mud Rumour
Spacers Love Mud Spacers (35 mm)
Brake Front SRAM Guide R
Brake Rear SRAM Guide R
Rotor Front Avid Centreline 180 mm
Rotor Rear Avid Centreline 160 mm
Rear Mech SRAM GX Eagle Derailleur
Shifter Rear SRAM GX Eagle Shifter
Chainset SRAM GX Eagle Boost Chainset, 175mm, 34T X-Sync chainring
Bottom Bracket SRAM DUB Bottom Bracket
Chain SRAM GX Eagle Chain
Cassette Sram XG1275 Eagle Cassette 10-50t
Finishing Kit
Stem Love Mud Piskie Stem 55 mm
Seatpost Love Mud Membar, 27.2 mm
Saddle Love Mud Abode
Tape/Grips Love Mud Grabby
Handlebars Love Mud Aspect Riser, 780 mm wide
Wheels Love Mud Rumpus 650b+ Boost (Tubeless Ready)
Tyres WTB Ranger 2.8 TCS Light, Fast rolling
Tube WTB
Frame S: 1.96 kg; M: 1.98 kg; L: 2.0 kg; XL: 2.2 kg
Built S: 12.0 kg; M: 12.1 kg; L: 12.3 kg; XL: 12.5 kg
Pedals not included with full builds

Swapouts and Upgrades

You can interchange Love Mud components on this build at no additional cost. So if you want a different length of stem, a particular saddle or bar then let us know in the notes section in the checkout and we'll get in touch. We also hold big stocks of SRAM, Rockshox, WTB and regular build with Shimano, Hope, Cane Creek. We'll build your Sonder with any part that suits your needs. Give us a call, with the same experienced mechanic helping throughout your build you know who to call if there's anything you want to know.

Click here for more information



Alpine Bond Warranty

We offer a 10 year guarantee on both our handmade titanium and Reynolds steel frames. Our hand welded 6061-T6 alloy triple butted frames and carbon frames come with a 5 year manufacturing defect warranty. All our bikes are built, checked and signed off by Cytech trained mechanics before being despatched to you in a custom-made bike box.


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2 Reviews


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Peter H
Sonder Broken Road - Eagle

Before starting I should just set out some background. Firstly my partner and I are in our fifties and came to bike-packing via cycle touring and mountain back packing as the perfect way to combine both activities. We bike-packed for several years on late 20th century 26 inch hardtails before deciding to invest in something more specific. Having been a very happy Alpkit customer for several years it seemed logical to look at the Sonder range and in particular the Broken Road.
I would say that we now know a lot more about what is important in a Bike-packing bike than we did at the time we purchased our Broken Roads but we are still delighted with our decision and have not seen anything even close to it in terms of spec, performance and price. You will always be a focus for interest on a Sonder bike and more so when you cycle past groups of hikers on some rocky bridleway in the middle of nowhere.
We eventually went for the SRAM Eagle XX1 group set option and Confucius handlebars but everything else was off the peg.
I have swapped the saddle for my faithful Brooks but my partner stuck with the Love Mud saddle which she claims to be the most comfortable saddle she owns.
We have varied the handlebar options a few times, currently using Salsa Bend 2 bars, but oscillate back to the Confucius bars on a regular basis.
Living in Berkshire, most of our bike-packing tends to be in the Chilterns, Ridgeway and Wessex Downs but we have explored The New Forest, Dartmoor, The Brecon Beacons (including "The Gap") and the Elan Valley.
Moving from our old bikes to the BR's was always going to be a performance step up but we were amazed at the stability and traction the 3" Trail Boss tyres provide. There is not a lot that you cannot get through or over, provided your legs can keep pedalling. Initially, punctures were an issue but since switching to a tubeless set up this has been eliminated and even with the shards of flint that are so common around here, the tyres have proved much more resilient than their lightness and flexibility would suggest.
I have a love hate relationship with the SRAM Eagle. I love the responsiveness of the trigger shifter and the precision of the gear change together with the vast gearing range available. On the other hand, I hate the loss of performance that occurs when ploughing through the glutinous clay we encounter around home. The problem is that the derailleur arm is so long that the bottom sprocket trails in the mud and causes an accumulation on the whole chainset until the gears either start jumping or refuse to shift. It then involves a 10 minute clean up exercise before progressing.
The length of the derailleur arm also means that any knocks or bumps places high leverage on the derailleur hanger and so we are both onto our second hangers after some irreversible bending incidents.
There is no solution to this gearing challenge that I can see, other than to switch to Rohloff hubs or improve our leg strength and drop to an 11 speed cassette with less teeth and shorter derailleur arm.
The Avid Guide brakes are very effective even with a fully loaded bike in the pouring rain. I have stuck with sintered pads from Uberbike Components for replacements, and been very happy with them.
In terms of carrying gear, we have a selection of Alpkit and Restrap harnesses and tend to go with Alpkit Airlock Xtra drybags strapped to the handlebars and seatpost, plus Stem Cells and Fuel Pods in the cockpit area. There is always a bit of manipulation required to work around the brake and gear cables and get the handlebar luggage secured properly but once in place there is no loss of agility or manoeuvrability. In fact, fully loaded the bikes seem to handle even more easily and predictably.
So overall, I would say that these are the best bikes we have ever owned, absolutely fit for purpose, for off road touring and bike-packing, and amazing value for a Ti framed bike.
We still feel very privileged to be riding such well-designed bikes and whilst we once met another Sonder rider on the Purbeck ridge, he was on a Transmitter so we are still on the lookout for any fellow Broken Roadies out there on the trails.

Sonder Broken Road 29er

I've had one of these for a few couple of years. I use it mainly for bike-packing, but also for general cross-country mountain biking. I run 29" wheels with 2.6 tubeless tyres.
It's hard to fault the bike. The handling is great - stable manoeuvrable, fun. It's almost as comfortable as my old 26" SantaCruz Blur; only let down by the harsh 80mm Reba fork which lacks negative air. I see that it now comes with a 100mm fork, which should be better. The adjustable dropouts I run in the middle of their travel, for my tyres. It's nice to have the option of faster handling or more clearance, and makes this bike really versatile.