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Sonder Transmitter Carbon Light, stiff, fast, aggressive and unadulterated pure fun. The carbon takes on trail centres, singletrack and UKs big mountains

Sonder Transmitter Carbon frame only

The bike for the UKs big rideable mountains - a carbon 650b+ boost compatible hardtail trail frame. Buy the frame only - a blank canvas - and build your dream all mountain bike.

Sonder Transmitter Carbon NX1 Recon

All mountain carbon hardtail for trail centres and mountains with SRAM NX1 1 x 11 groupset, Rockshox Recon fork, and Love Mud Rumpus 650b+ boost wheels.

Sonder Transmitter Carbon NX1 Revelation

All mountain carbon hardtail trails bike designed for trail centres and mountains with SRAM NX1 1 x 11 groupset, Rockshox Revelation fork, and Love Mud Rumpus 650b+ boost wheels.

Sonder Transmitter Carbon GX Eagle Revelation

Fast, furious, fun, and forgiving carbon hardtail trail bike with SRAMs new GX Eagle drivetrain and RockShox Revelation forks, built for for trail centres and big mountains.

Sonder Transmitter Carbon GX Eagle Pike

All mountain carbon hardtail trail bike, with SRAMs new GX Eagle drivetrain and Pike forks; a fast, aggressive, fun, and forgiving bike for trail centres and big mountains.

Sonder Transmitter Carbon XX1 Eagle

All mountain carbon hardtail trail bike designed for trail centres and mountains with SRAM XX1 Eagle 1 x 12 groupset, Rockshox Pike RCT3 fork, and Love Mud Rumpus 650b+ boost wheels.

Transmitter Carbon hardtail mountain bike is the evolution of the original alloy, designed for adrenaline fuelled aggressive trail riding and big days in the mountains. Transmitter carbon frame rides like the alloy but on steroids. Kind of like a friendly hooligan: aggressive, responsive and fast but fun and forgiving.

Transmitter Carbon frame at £749; complete bikes from £1499.

Contact us to arrange a demo at one of our stores or test ride over a weekend for £39 a day plus £30 delivery and return shipping.

The Transmitter Carbon is long, low, slack and fun. A plus sized carbon hardtail.

We’ve taken what we’ve learned from the original Transmitter and evolved the geometry, we’ve extended the reach and the long and low wheelbase gives stability and control at high speed.

We’ve shortened the seat tube length to allow longer drop seat posts and give better stand over clearance, the 73-degree seat tube angle and the plus size tyre specific design means it also climbs really well and makes the most of any traction.

The same slack (65-degree) head angle is designed around a 130mm fork and a 35mm stem. When combined with short seat stays and that flattened, longer top tube you get an agile and confidence inspiring ride whether riding steep mountain trails or shredding the local woodland singletrack.

Transmitter Carbon makes best use of available technologies. Boost 148/110 standards and bolt through hubs mean a stiffer and more responsive ride.

650b+ tyres on a tubeless compatible wheelset mean loads of grip and control, whether climbing or descending.

“Blisteringly fast, sweetly detailed, radically dialed … a proper aggro attack bike that loves to shove its big front tyre into trouble and then bosses it out big style” - Guy Kesteven, Bike Radar

We’ve stuck with a standard threaded BB because we think it works better for where we ride, year round.

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.

The Transmitters are bikes that just fit in with hard riding. But mostly, they are to be ridden and enjoyed. Easy to ride and maintain, fast and lots of fun.

Sonder Transmitter Carbon - Need to know

Extended reach

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.

Internal cable routing

Clean lines and tidy cables thanks to internal routing. Transmitter Carbon also incorporates a neat Reverb Stealth 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.

Precision engineering

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.

Obsessive detailing

Precision decals, a choice of raw carbon finish, and 2 painted colourways.

Hide features

Frame spec

Frame Key Features
Carbon trail frame compatible with integrated tapered headset for a clean, low front end
Optimised for 130 mm suspension forks
Internal cable 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
Reverb Stealth port
EN 14766 compliant
Weight: S: 1175 g; M: 1200 g; L: 1230 g


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
Size Small Medium Large
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 Options

We minimise the chopping and changing that makes so many other bikes a smorgasbord of bike parts. We spec Transmitter with pure NX1, GX1 or XX1 Eagle ... and take pride in offering SRAM just as they designed and tested their componentry to work.

Check out the specs on the individual product pages. They are built to order and are fully customizable – if you want a different stem length, saddle, wheelset, bar or gear ratio then let us know. If you’ve a dream build in mind then please get in touch and we’ll do our best to source the parts you want.

All our bikes are built in-house, checked and signed off by Cytech trained mechanics before being despatched to you in a custom-made bike box.

Alpine Bond Warranty

Our titanium frames are handmade and come with a 10 year frame warranty. Our hand welded 6061-T6 alloy triple butted 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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