Stock due indicated by the dates below. Please allow circa 10 days after this date for build and despatch. Our bike guru Neil will contact you after you place your order to confirm build times and keep you updated with your order.
|Black||Buy Now!||Buy Now!||ETA: mid-June||ETA: mid-June|
|Rocket||Buy Now!||ETA: mid-June||ETA: mid-June||ETA: mid-June|
|Reef||ETA: mid-June||ETA: mid-June||ETA: mid-June||ETA: mid-June|
|Gun Metal||Buy Now!||Sold Out||Sold Out||Sold Out|
Choose your Sonder from these options:
Please allow 10 working days for your bike to be built, checked and despatched.
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|Total Amount Payable|
|We act as a credit broker and not a lender and can introduce you to Close Brothers Retail Finance. Terms and Conditions apply. Finance subject to status. Applicants must be 18 or over and resident in the UK. Finance provided by Close Brothers Retail Finance, a trading style of Close Brothers Limited – a subsidiary of Close Brothers Group Plc. Registered Office: 10 Crown Place, London, EC2A 4FT.|
At a glance
- Fast, agile trail centre and big mountain hard tail mountain bike
- Hand welded 6061-T6 triple butted frameset
- Vertically compliant laterally stiff tubing
- Dropper seat post compatible
- Love Mud 650b+ boost wheelset with WTB Ranger tyres
- SRAM NX1, 1 x 11 groupset
Do you remember the enthusiams and energy riding your first mountain bike, to go where you shouldn’t, open up and really ride (fast)? The way you soared down the hill that would make your parents wince if they knew? The way you pedalled with gusto up the steep bits in anticipation of that flat and free reward at the top?
Transmitter; a perfectly poised 650b hardtail mountain bike with balance up and down, across cambers and ruts, roots and rocks.
Transmitter can take on those mountain trails guns blazing; Snowdon on a sunny Autumn day or the Colorado singletrack with killer views and grinders where you won’t get out the grannie-gear. Yet, you can still whip around Cannock Chase on a Sunday afternoon with great agility.
Striking flattened top tube gives vertical compliance but lateral stiffness; an all mountain bike that gives the stability of a fat-bike shrunk in the wash with the nimbleness of a trail bike. Utilising the new Boost148 and Boost110 standards, even the most sheepish rider will tackle those steep sections like a pro.
Clinically created, Transmitter frames feature external bolted cable solutions, integrated headsets, through-axle hubs, NX1 gearing, formed butted smooth-welded tubing and as you would expect - handling beyond compare. They’re bikes that just fit in with hard riding. But mostly, they are to be rode and enjoyed. Easy to ride and maintain. And funner. Much funner.
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.
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.
Tapered head tube
Whoever would choose to be a head tube? You might as well step into the ring with Mike Tyson. This is a critical junction point where force is distributed around the frame and steering precision is won or lost. Transmitter has a wide tapered head tube to house your internal bearings, distributing force more evenly whilst improving steering over broken terrain.
Transmitter is designed around the new Boost standard and corresponding 52 mm chainline for better steering stiffness and increased wheel support.
Chain guide ready
Transmitter can be fitted with a chain guide. (ISCG 05 compatible).
Transmitter is designed to run with 650b+ tyres at both ends.
Alloy hard trail trails frame
|Frame Key Features|
|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 130 mm suspension forks|
|Bolted cable guides for precision cable placement and retention|
|Durable anodised finish|
|Boost148 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|
|Adventure cage compatible downtube mount|
|Reverb Stealth port|
|EN 14766 compliant|
|Weight: S: 2000 g; M: 2030 g; L: 2070 g; XL: 2100 g|
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 +
|ST - Seat tube||395||445||470||490|
|TT - Top tube||593||622||642||659|
|HT - Head tube||110||120||120||130|
|HA - Head angle||65||65||65||65|
|SA - Seat angle||73||73||73||73|
|CS - Chainstay||425||425||425||425|
|BB - BB drop||42||42||42||42|
|FO - Fork offset||46/51||46/51||46/51||46/51|
|WB - Wheelbase||1139||1163||1183||1208|
|SO - Stand over||740||770||790||810|
|RE - Reach||410||430||450||470|
|SK - Stack||599||608||608||618|
|ST - Seat tube||410||467||505|
|TT - Top tube||595||615||631|
|HT - Head tube||120||120||120|
|HA - Head angle||65||65||65|
|SA - Seat angle||72.5||72.5||73|
|CS - Chainstay||425||425||425|
|BB - BB drop||42||42||42|
|FO - Fork offset||42/51||42/51||42/51|
|WB - Wheelbase||1130||1150||1175|
|SO - Stand over||748||773||796|
|RE - Reach||406||426||446|
|SK - Stack||610||610||610|
|Build||SRAM NX1, 1 x 11|
|Frame||Sonder Transmitter, 6061-T6 Hand Welded Alumminium|
|Fork||Rockshox Recon RL 27.5+/29, Boost, 130mm Travel|
|Rear mech||Sram NX1 X-Horizon, 11 speed, Long Cage|
|Shifter||Sram NX1 11 speed, X-Actuation|
|Cassette||Sram PG-1130, 11-42|
|Chainset||Sram NX1, 175mm|
|Chainring||Sram 32t Steel X-Sync|
|Bottom Bracket||Sram GXP XR|
|Handlebar||Love Mud Aspect Riser, 740 mm wide|
|Headset||Love Mud Rumour, Integrated Sealed Bearing, Tapered|
|Stem||Love Mud Piskie, 40 mm|
|Spacers||Love Mud (3x10 mm, 1x5 mm)|
|Rotors||Avid Centreline (Front 180 mm, Rear 160 mm)|
|Seatpost||Love Mud Membar, 31.6 mm|
|Seat clamp||Love Mud Vice, 34.9 mm|
|Rims||Love Mud Rumpus 650b+ Boost Wheelset|
|Tyre Rear||WTB Ranger 2.8|
|Tyre Front||WTB Ranger 2.8|
|Tubes||WTB Inner Tube, 27.5, 2.8-3.00|
|Frame only||S: 2000 g; M: 2030 g; L: 2070 g; XL: 2100 g|
|Built||S: 13.3 kg, M: 13.8 kg, L: 13.9 kg; XL: 13.9 kg|
|Pedals not included with full builds|
- What wheel sizes can Transmitter take?
- What pressure should I run my Trailblazers at?
- What are builds and groupsets?
- Are Sonder available outside the UK?
- How much does international shipping for Sonder Bikes and Love Mud Wheels cost?
- Cycle to Work Schemes
- Try Before Your Buy - Sonder Demo Bikes
- Common Bike Upgrades: price list
- Why have Alpkit designed their own bikes?
- Which wheelset for which Sonder Bike?
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 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.
Sonder - a new bike brand from British outdoors experts Alpkit
Matt Orton previews the Sonder range at the Alpkit Big Shakeout festival and picks up on the strong underlying emphasis of equipment for adventure.
Sonder Transmitter First Ride Review Outdoors Magazine
Jon Doran test rides the Sonder Transmitter.
BikeRadar Check Out Sonder
Bike Radar come by the Sonder stand at the London Bike Show
Bike Rumour review Sonder
US BikeRumour write up our first Sonder bikes
What Mountain Bike 5* Transmitter
Pink Bike Checks Out Sonder
PinkBike visit us at the London Bike Show
Single track Review Sonder
Singletrack came by Sonder at the London Bike Show
Used this product?Write a review
I've had my transmitter about 2 months now and it's simply superb! I've not touched my other bikes at all since getting it. It really is as good as all the reviews on singletrack/ bikeradar etc say it is. And the service and advice from guru Neil is second to none. Thanks Alpkit.
Had my NX1 build Transmitter now for about 3 months. Bought it after a fair time comparing it to various other bikes - Orange, Ragley and Whyte being the main 3 contenders for my cash but went with this because I trust Alpkit, it's designer knows what he is doing and the kit / build level was very competitive. It's a great bike. Love a hardtail - this bike gives you loads of feedback so you know exactly what each wheel is doing. Used all round Thetford and at Chicksands so far. Handles the technical stuff well and has no issues with the jumps, drop offs and trail features. So stable and yet still nimble. Climbs really well too which I'll benefit from when we hit Afan later this year. Still running tubes (20psi F&R seems to work well) and I've added a dropper, upgraded the grips, added V12s and Love Mud mud guard to protect the forks and headset and it looks great. Got the black frame version. Special mention to Neil the bike guru - answered all my questions about the bike before, during and even after purchase. Really pleased and 'yes" you can believe the reviews about this bike on-line. It's Awesome!
silly / stupid fun
I know the title is strange a bit about me first I have ridden MTB's since 1987 and I have never ever ridden a bike which makes me chuckle so much it's a real hoot.
I did not want a Sram groupset but there is not much option and I was wrong the NX groupset works flawlessly
I wanted to uprate the forks but it got a bit complex on the c2w scheme wrong again the Sektors are brilliant.
I have always rebuilt any bike I have bought but I cannot fault the build of this bike these guys are good.
After I bolted the bars on I fitted a set of pedals and went for a spin what a laugh this bike makes you smile ( and thats what its all about really) I went to the local BMX track and laughed all the way round to some funny looks from the local kids with a 54 year old playing on there track but hey I was having a laugh!!!
I went to the Quantocks on sunday more laughing but this thing flies the 3" tyres roll quickly and are not at all draggy even at 15psi. the grip is amazing I was able to clear things which have in the past stopped me in my tracks.
point the thing down hill and it just flies but easily controllable and the grip and feedback is amazing.
needless to say I am stunned with this bike never have I laughed so much, you just have to try on to understand.
Now the negatives the grips are too big for me ( hardly a fault)
My Cotics will be resigned to the back of my shed
Sonder Transmitter in Rocket Green is an absolute Rocket
Ordered my Transmitter based on the rave reviews on Bike Radar... Could not be more blown away by the quality, price, and service from Alpkit! Nothing I test rode here in the states came close for the price!!! Had the bike shipped to the states problem free via DHL. Basically the bike arrived, I put the bars on, gave everything a pnce over (didnt need it), put the front wheel on, filled up the tubeless tires (small fee well worth it) and hit the trails! The Transmitter fit the bill exactly for what I was looking for in a bike. It is extremely playful, easy to throw around, and just goes and goes. The 27.5+ tires give confidence like no other on the corners and the geometry allows for a light front end feel. This bike will take me to the next level in my riding and has been and will be further recommended to those looking for the hands down best bang-for-your-buck trail hardtail around.
Bought the XL size and all good except as its winter the Ranger tyre was very vague first ride in the slop. Put a more aggressive front tyre on, went tubeless at the same time and now its brilliant. Love it, excellent machine floated over a horse rutted frozen bridleway while others on normal 27.5 tyres fell off constantly. Components seem good, gears, excellent with a good range. No complaints so far other than a more versatile front tyre as stock maybe.
My wife wasn't all that impressed when I got back from my maiden Transmitter outing and proudly announced that "I'll probably kill myself using this bike". This bike is just so fun and easy to ride (once the saddle and grips were changed). Bombing down a rocky and rooty gully for the first time, the bike just took it all in it's stride, I couldn't quite understand why I hadn't already been ejected from the saddle. It made me feel like a much much better rider than I am .
This bike just feels so planted as well as being so playful.
The biggest change I made was changing out the chainring for a 28T (remember to buy a boost offset DM version). This gives me a real decent amount of climbing gears (giving me a range of 72.5 - 19 gear inches. Living at the foot of a mountain range this is very useful, as well as for bike packing).
So basically it descends really well, climbs very well and also is pretty handy on the flat (even on tarmac once the tyres have been inflated a bit more).
The SRAM gears work very well as do the brakes.
My only real niggle would be that you can only attach one bottle cage.
Finally my 8 year old son thinks it looks cool (and asked for one for xmas, not happening big man) and when out and about people are always staring at the bike.
All in all very pleased.