Transmitter XT

Photos for illustration purposes. Please check the bike spec for detailed component listings.

Transmitter XT

Aggressive hard tail mountain bike


All mountain hardtail trail bike designed for trail centres and mountains with Shimano XT 1 x 12 groupset, Rockshox Cane Creek Helm MK2 Air fork and Sonder Nova 27.5+ boost wheels.

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Sorry, this product isn't available at the moment.

Stock arriving Early 2022


The signature flattened top tube gives vertical compliance but lateral stiffness - it really is an all mountain bike. That long wheelbase combined with the slack front end, size specific chainstays and a lowered BB give stability and control through the rowdiest of terrain.

Transmitter is designed around Boost 148/110 standards and 27.5" 2.6/2.8" tyres, and optimised for 1x groupsets. The geometry and extra grip from those big tyres means even the most sheepish rider will tackle those steep sections, up and down, like a pro.

Transmitter frames now feature internal cable routing through the downtube, integrated headsets, through-axle hubs, refined dropouts, butted tubes and smooth welds (and 3 shiny new colours).

Transmitter is a bike that just fits in with hard riding. This new version is still the fun trail bike it’s always been, and will still be a perfect partner for multi-day epics or short and fast trail centre blasts, but the changes we’ve made have raised the Transmitter’s limits, so you’ll be able to push the bike harder than ever before!

At A Glance
  • Fast, agile trail centre and big mountain aggressive hard tail.
  • Frame: Sonder Transmitter, hand-welded 6061-T6 triple butted frameset; vertically compliant laterally stiff tubing.
  • Drivetrain: Shimano XT / 1 x 12 / 10-51
  • Brakes: Shimano XT
  • Forks: Cane Creek Helm MK2 Air / 27.5 / 150mm
  • Seatpost: RockShox Reverb / 150mm Drop / 31.6 x 440mm
  • Wheelset: Sonder Nova 27.5+ Wheelset / Shimano
  • Tyres: WTB Vigilante / Comp / 2.8 (front) and WTB Trail Boss / Comp / 2.6 (rear)

Why XT?

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Shimano drivetrains are designed, engineered and manufactured to work as complete drivetrain systems. Shimano's new microspline hub means that you can run a 10 tooth cassette for a huge gear range. The new EV shifters and brakes provide loads of adjustment to get the perfect position as well as a rock-solid feel on the bars. And the 4-pot brakes provide consistent and reliable stopping power.

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Hand welded 6061-T6 triple butted frameset

Not all tubes are equal, Transmitter uses tube walls of different thicknesses to get material where it is needed and save weight where it isn’t.

Dropper seatpost ready

The Transmitter frame is compatible with a dropper seatpost so even the most sheepish riders can tackle those steep sections head on like a pro.

Vertical compliance and lateral stiffness

The strikingly flattened top tube is the spoonful of black magic we need to make the frameset both rigid and forgiving in all the right places. Stable yet nimble, the geometry has been tweaked to give a spirited ride.

Internal cable routing

Clean lines and tidy cables thanks to fully guided internal routing.

Wheel compatibility

Designed around Boost 148/110 standards and 27.5" 2.6/2.8" tyres

Chain guide ready

​Transmitter can be fitted with a chain guide. (ISCG 05 compatible).

Build Spec
Build Transmitter XT
Frame: Transmitter Frame
Fork: Cane Creek Helm MK2 Air / 27.5 / 150mm
Headset: FSA Orbit C-40-ACB Headset / 7.8mm Spacer
Seat Clamp: Sonder Gromit / 34.9mm
Group Set
Brake Front:
Brake Rear: Shimano XT M8120 Brake / Left / 2000mm
Rotor Front: Shimano RT66 Rotor / 6 Bolt / 180mm
Rotor Rear: Shimano RT66 Rotor / 6 Bolt / 160mm
Rear Mech: Shimano XT M8100 Rear Derailleur / 1 / 12
Rear Shifter: Shimano XT M8100 Shifter / 12 / Direct
Chainset: Shimano XT M8100 Crankset / 170mm / 32t
Bottom Bracket: Shimano MT800 Bottom Bracket / BSA
Chain: Shimano SLX Chain / 12 / 120
Cassette: Shimano XT M8100 Cassette / 12 / 10-51t
Finishing Kit
Seatpost: RockShox Reverb / 150mm Drop / 31.6 x 440mm
Saddle: Sonder Zone / 133 / Black
Tape/Grips: Sonder Clutch / Black
Handlebar: Sonder Aspect Riser
Front Tyre: WTB Vigilante / Light High Grip / 27.5 / 2.8
Rear Tyre: WTB Trail Boss / Tough Fast Rolling / 27.5 / 2.6
Tubes: WTB Inner Tube / 27.5 / 2.5
Built: S: 13.3 kg, M: 13.8 kg, L: 13.9 kg; XL: 13.9 kg
Pedals not included with full builds
Geometry and Sizing


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 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
Riders of 6ft 2in +


Size Small Medium Large X-Large
ST - Seat tube 410 440 470 485
TT - Top tube 581 603 623 647
HT - Head tube 105 115 115 130
HA - Head angle 65 65 65 65
SA - Seat angle 75 75 75 75
CS - Chainstay 425 425 427.5 430
BB - BB drop 52 52 52 52
FO - Fork offset 46 46 46 46
WB - Wheelbase 1144 1169 1191 1220
SO - Stand over 750 768 783 796
RE - Reach 422 442.5 462.5 482.5
SK - Stack 589 598 598 612
Frame Spec
Weight: S: 2.0kg; M: 2.03kg; L: 2.07kg; XL: 2.1kg
Alloy trail frame with integrated tapered headset for a clean, low front end
Hand welded 6061-T6 triple butted frameset
High-quality extended welds
Optimised for 150 mm (540 mm axle to crown) suspension forks
Internally routed cables
Boost 148 rear spacing to allow huge tyre clearance while benefitting from a stronger wheel
Threaded 73 mm BSA BB shell for no-creak assembly
Chainstay mounted disc brake for clean lines and damage protection
Reverb Stealth 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