Sonder Transmitter Carbon GX Eagle Helm
Fast, furious, fun, and forgiving carbon hardtail trail bike with SRAMs new GX Eagle drivetrain and Cane Creek Helm Air fork, built for for trail centres and big mountains.
£2299.00 Was: £2449.00
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.
Transmitter Carbon Frame
Please allow 20 working days for us to build, check, pack and despatch your Sonder.
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At a glance
- Quick, agile, and stable hardtail for mountains and trail centres
- Frame: Sonder Transmitter Carbon; vertically compliant laterally stiff carbon frameset; low, long, and slack
- Drivetrain: SRAM GX Eagle
- Forks: Cane Creek Helm Air, 150 mm Travel
- Wheelset: Love Mud Rumpus 650b+ boost
- X-Fusion Manic Dropper seat post
The Transmitter Carbon is long, low, slack, and fun.
We’ve taken what we’ve learned from the original alloy Transmitter and evolved the geometry, extending the reach, and lengthening and lowering the wheelbase to boost stability and control at high speed.
Designed to run plus-sized tyres, and with a 73-degree seat tube angle, Transmitter Carbon makes the most of every ounce of traction to take you up steep hills like a dream.
A shorter seat tube supports longer drop seatposts, giving better stand over clearance. Combine this with the relaxed, 65-degree head angle, and a flattened, longer top tube, and you’ve got a bike that gives you confidence and agility for an inspiring ride, whether tackling steep mountain trails or shredding the local woodland singletrack.
Transmitter Carbon frames are designed around 1x specific groupsets and feature internally routed cables, integrated headsets, stealth dropper routing and a single set of bottle bosses.
Think of Transmitter Carbon as your friendly neighbourhood hooligan: a fast, aggressive, forgiving, and fun bike that just fits in with hard riding.
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.
CANE CREEK HELM AIR
Cane Creek Helm is about conquering aggressive trail, enduro racing, and everything in between. By isolating each damping and air spring adjustment, Helm can be tuned for all terrains and riding styles, giving you ultimate control over your suspension set-up.
Vertical compliance and lateral stiffness
A striking, flattened top tube gives vertical compliance and lateral stiffness, striking the perfect balance between agility and stability.
Transmitter Carbon is an evolution of our original alloy Transmitter. We’ve made a few tweaks here and there, and extended the reach to enhance stability at higher speeds.
Fully guided internal routing
Clean lines and tidy cables thanks to fully guided internal routing. Transmitter Carbon also incorporates a neat port for a dropper seat post.
Boost 148-specific design
Transmitter Carbon is designed around Boost 148 standards and 650b+ tyres, even the most sheepish rider will tackle those steep sections like a pro. Seatstay mounted disc brake for clean lines and damage protection.
Long wheel base, slack head tube, low belly, and room for plus size tyres.
Wide tyre clearance
Extra width between the chainstays lets you run 27.5+ tyres up to 2.8 inches.
Precision decals, a choice of raw carbon finish, and 2 painted colourways.
|Weight (kg): S: 1.18; M: 1.2; L: 1.23|
|Carbon trail frame compatible with integrated tapered headset for a clean, low front end|
|Optimised for 130 mm suspension forks|
|Fully guided internal routing|
|Painted or raw carbon finish|
|Boost 148 rear spacing for wheel strength and optimal chainline|
|Threaded 73 mm BSA BB shell for no-creak assembly|
|Chainstay mounted disc brake for clean lines and damage protection|
|Bottle cage mount|
|Dropper seat post port|
|EN 14766 compliant|
|The Transmitter frame is suited to a low profile 2.8” tyre or aggressive 2.6” tyres, some larger 2.8”s may rub the chainstays in use|
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. 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 toptube to your crotch this will give you enough seatpost 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
|ST - Seat tube||395||445||495|
|TT - Top tube||593||622||636|
|HT - Head tube||110||120||120|
|HA - Head angle||65||65||65|
|SA - Seat angle||73||73||73|
|CS - Chainstay||425||425||425|
|BB - BB drop||42||42||42|
|FO - Fork offset||46/51||46/51||46/51|
|WB - Wheelbase||1139||1163||1183|
|SO - Stand over||740||765||795|
|RE - Reach||410||430||450|
|SK - Stack||599||608||608|
|Build||SRAM GX Eagle Helm|
|Frame||Sonder Transmitter Toray T700 Carbon Frame|
|Fork||Cane Creek Helm Air, 150 mm|
|Headset||Love Mud Rumour|
|Spacers||Love Mud OEM Spacers|
|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, 170mm, 32T|
|Bottom Bracket||SRAM DUB Bottom Bracket|
|Chain||SRAM GX Eagle Chain|
|Cassette||Sram XG1275 Eagle Cassette 10-50t|
|Stem||Love Mud Piskie Stem 35 mm|
|Seatpost||X-Fusion Manic 31.6, 125/150mm drop|
|Seat Clamp||Love Mud Silent Partner|
|Saddle||Love Mud Abode|
|Tape/Grips||Love Mud Grabby|
|Handlebars||Love Mud Aspect Riser|
|Wheels||Love Mud Rumpus 650b+ Boost (Tubeless Ready)|
|Front Tyre||WTB Vigilante 2.8, Light High Grip|
|Rear Tyre||WTB Trail Boss 2.6, Tough fast Rolling 27.5|
|Frame||S: 1.18 kg; M: 1.2 kg; L: 1.23 kg|
Unfortunately we haven't been able to weigh these bikes yet, please bear with us and we'll update this page as soon as we can
|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.
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.