The Signal is fast, it’s for flat out speed.

It pedals like an XC bike, descends like an enduro bike, and c...

Signal Ti SX Eagle

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

Buy Now

Signal Ti SX Eagle

Aggressive titanium 29er hardtail

€2.549

An aggressive titanium 29er hardtail trail bike with SRAM SX Eagle 1x12 groupset and Rockshox Recon Silver RL fork: the bike for flat-out speed and sessioning the groomed trail centre trails

Need help choosing a bike or technical advice?

Open a Live Chat
Pop into a store 7 days a week
Call a Sonder Customer Hero on 01773 417006
Email us at support@alpkit.com

Buy Now. Be riding in 5 days.

An aggressive titanium 29er hardtail trail bike with SRAM SX Eagle 1x12 groupset and Rockshox Recon Silver RL fork: the bike for flat-out speed and sessioning the groomed trail centre trails

Buy Now. Be riding in 5 days.

Please select
size

Size
- Small
  Email when available
- Medium
  Email when available
- Large
  Email when available
- X-Large
  Email when available

Every Sonder bike is built to order so tell us exactly how you want it. Make any changes you want from the standard build and when you’re done, just hit “Add to bag” at the bottom of the page.

Handlebar

Sonder Aspect Riser 780mm
Sonder Aspect Riser [OEM]
In general riser bars tend to be wider than flat bars and may have slightly more flex to give a more forgiving ride. As you go into descents and your arms drop below your knees the additional height gained on your front end will help you take control of the steep descents.

That said you can get all bar types in a range of widths and stiffnesses and front end height can be adjusted with spacers like our Sonder Rings, so sometimes you just have to ignore the mumbojumbo and make your call on style and personal preference and there is nothing wrong with that.
Sonder Aspect Flat 720mm
+€0
Sonder Aspect Flat [OEM]
Flat bars help you keep the front end of your bike low, allowing you to get the weight over your front wheel when climbing and giving you more control in cornering.

Our flats have a 5˚ rise so technically we should call them flatish, but if you really need them to be totally flat just rotate in the stem clamp!
Sonder Confucius
+€34,99
Sonder Confucius
Confucius says that you don't have to sacrifice what you love about your traditional riser bars just to get the flexibility of a hooped bar.

We have taken our Aspect risers and evolved them in to a bar designed primarily for bikepacking. You won't have to adapt to a new hand position so you are not going to lose any control off-road and you can still get out of your saddle and power up the hills like a hero.

If you do want to move your hands a bit a reduce the fatigue of a long ride, the hoop extends out front giving a choice of further hand positions. The bars also have a slight 'back sweep' so you can sit more upright in the saddle

The bars have a slight riser but feel free to experiment and rotate them to your suiting. Keep them horizontal, or twist them up slightly to give yourself a streamlined TT style riding position to help you battle across a windblown Tierra del Fuego.

Strength is not compromised as the main load bearing section of the bar is a single piece. Got gadgets? Confucius loves gadgets, and with the out-front hoop you can free up the bar around the stem. Simply attach your Garmin, 3000 lumen torches or mascots to the hoop and they will still be well within reach, maybe at an even better viewing angle and sit above your handle bar luggage.

Take your bikepacking into the mountains; Confucius is a bar that gives you more control than a tradional swept back bar on technical terrain.

Saddle

Sonder Abode Black / 138
Sonder Abode [OEM]
High density foam padding over a plastic base provides comfort and longevity. A v-shaped split at the rear of the saddle allows flex as you are riding, increasing shock absorbancy and reducing pressure on the spot between your sit bones.

Scooped up at the back with a slight rise towards the nose the longitudinal profile provides a cupped, craddled seating position, a timeless, proven design for distance on and off the road or climbing in the mountains.

Stainless steel rails give 50 mm of forward and back adjustment to help you find your sweet spot.

All our Sonder bikes come with Abode fitted as standard.
Sonder Abode Black / 158
Sonder Abode [OEM]
High density foam padding over a plastic base provides comfort and longevity. A v-shaped split at the rear of the saddle allows flex as you are riding, increasing shock absorbancy and reducing pressure on the spot between your sit bones.

Scooped up at the back with a slight rise towards the nose the longitudinal profile provides a cupped, craddled seating position, a timeless, proven design for distance on and off the road or climbing in the mountains.

Stainless steel rails give 50 mm of forward and back adjustment to help you find your sweet spot.

All our Sonder bikes come with Abode fitted as standard.
Sonder Kura
+€44,99
Sonder Kura [OEM]
Adventure cycling is diverse; in the course of a single trip you can find km's of asphalt, traverse rutted grasslands, weave through thickly forest singletrack, climb loose gravel track or descend steep rocky trails.

It is unlikely you are going to find a single saddle position for all of this terrain. With this in mind Kura has a flat longitudinal profile with a gentle lateral curvature to give an extended saddle area, allowing you to position yourself around the saddle as you move between road, downhill, and climbing.

The honeycomb base reduces weight whilst still providing structure and support that adapts and flexes with your motion.

Titanium rails giving 50 mm of forward and back adjustment to help you find your sweet spot. Titanium is more forgiving than steel so provides a little more comfort.

Slightly wider than our Adobe saddle, it may provide additional comfort for riders with wider sit bones.
Sonder Zone 133 / Black
+€39,99
Sonder Zone [OEM]
The Zone is designed for maximum pedalling efficiency and comfort on longer rides, whether on road or off it.

Chromoly rails with suspension system

Cut-out shape relieves pressure

High density foam seat for comfort

We’ve selected a flat saddle profile that’s long enough to allow for lots of micro-adjustments to your riding position over the course of a full day on the bike. The nose width allows you to move forward over the pedals on climbs and sprints, and a tapered back enables you to get behind the saddle easily for switchback descents or technical off-road sections.

We’ve chosen a nylon fibre saddle base to provide a stiff and stable pedalling platform for a low overall weight. This base is connected to the chromoly rails using a patented suspension system that reduces road buzz and improves comfort without compromising on support.

High density foam stays comfortable for longer, adding to the saddle’s supportive platform. And a long central cut-out in the middle of the Zone relieves pressure on the perineum, allowing you to ride for longer.

Seatpost

Sonder Seatpost / 31.6mm / 400mm 31.6mm / 400mm
Sonder Seatpost [OEM] / 31.6mm / 400mm
A seat post that is reliable and offers adjustability to help you find your ultimate riding position.

Membar is all about adjustability. With a twist of your allen key the micro adjustment rail clamp allows the saddle angle to be fine tuned to your ideal position.

Your saddle can be fitted with minimal faff thanks to a quick release action that allows the upper rail clamp to be released without removing the retaining bolt. The lower rail clamp is secured to the seat post which means that it will not fall in the mud when you are trying to fit your saddle.
X-Fusion Manic Drop Seatpost and Lever 31.6mm / 125mm
+€139,99
X-Fusion Manic Drop Seatpost and Lever
The X-Fusion Manic Dropper has been designed to work well across cross-country, trail, all mountain and enduro riding.

It works on a simple design. Inside you’ll find a closed cartridge that is both sealed and designed to be easily removable from the rest of the post. Simple construction aside, the action of this post feels super-smooth and silky.
X-Fusion Manic Drop Seatpost and Lever 31.6mm / 170mm
+€139,99
X-Fusion Manic Drop Seatpost and Lever
The X-Fusion Manic Dropper has been designed to work well across cross-country, trail, all mountain and enduro riding.

It works on a simple design. Inside you’ll find a closed cartridge that is both sealed and designed to be easily removable from the rest of the post. Simple construction aside, the action of this post feels super-smooth and silky.
RockShox Reverb / 150mm Drop / 31.6 x 440mm
+€64,99
RockShox Reverb / 150mm Drop / 31.6 x 440mm
The RockShox Reverb provides effortless actuation and increased reliability featuring new Vent Valve Technology.

With reduced overall post lengths and new travel options, riders of all shapes and sizes benefit from more travel than ever before. The Reverb Stealth is just really, really reliable at simply going up and down.
RockShox Reverb / 125mm Drop / 31.6 x 390mm
+€64,99
RockShox Reverb / 125mm Drop / 31.6 x 390mm
The RockShox Reverb provides effortless actuation and increased reliability featuring new Vent Valve Technology.

With reduced overall post lengths and new travel options, riders of all shapes and sizes benefit from more travel than ever before. The Reverb Stealth is just really, really reliable at simply going up and down.

Stem

Sonder Piskie 31.8mm / 35mm
Sonder Piskie [OEM]
Sonder Piskie 31.8mm / 45mm
Sonder Piskie [OEM]
Sonder Talo 35
+€49,99
Sonder Talo
Talo is a sturdy CNC machined aluminium performance mountain bike stem with four bolt clamp to hold your bar firmly in place.

Opposing bolts on the steer tube clamp give extreme clamping power while reducing stress on the steer tube. Machining shaves unnecessary weight to specifically engineer it for trail and all-mountain riding.

It's built for the trail and stiff for its weight to give precise and immediate handling.

compatible with all 31.8mm handlebars and 28.6mm steerer tubes

0° rise

6061-T6 aluminium construction

Weighs just 127g (35mm length)

Available in 35mm and 45 mm lengths

The humble stem has a significant effect on your bike's geometry and as a result its performance and your comfort. A shorter stem results in faster handling and a more upright riding position. Longer stems increase reach with slower more predictable handling.

Experiment with different length stems or get a pro bike fit to hone your perfect set-up.

Note. The length of a stem isn’t its overall length, from the very front to the very back, but the distance from the central point on the steerer tube and the centre of the handlebar.

Sonder Talo 45mm
+€49,99
Sonder Talo
Talo is a sturdy CNC machined aluminium performance mountain bike stem with four bolt clamp to hold your bar firmly in place.

Opposing bolts on the steer tube clamp give extreme clamping power while reducing stress on the steer tube. Machining shaves unnecessary weight to specifically engineer it for trail and all-mountain riding.

It's built for the trail and stiff for its weight to give precise and immediate handling.

compatible with all 31.8mm handlebars and 28.6mm steerer tubes

0° rise

6061-T6 aluminium construction

Weighs just 127g (35mm length)

Available in 35mm and 45 mm lengths

The humble stem has a significant effect on your bike's geometry and as a result its performance and your comfort. A shorter stem results in faster handling and a more upright riding position. Longer stems increase reach with slower more predictable handling.

Experiment with different length stems or get a pro bike fit to hone your perfect set-up.

Note. The length of a stem isn’t its overall length, from the very front to the very back, but the distance from the central point on the steerer tube and the centre of the handlebar.
Forks

Rockshox Recon RL Silver 130mm / 29er
Rockshox Recon RL Silver
Rockshox Revelation RC 29 / 130mm
+€209,99
Rockshox Revelation RC
RockShox Pike Ultimate RCT3 29er / 130mm
+€449,99
RockShox Pike Ultimate RCT3
Cane Creek Helm MK2 Air / 29 / 130mm 130mm
+€179,99
Cane Creek Helm MK2 Air / 29 / 130mm
Cane Creek Helm MK2 Air / 29 / 130mm 130mm
+€484,99
Cane Creek Helm MK2 Air / 29 / 130mm
Cane Creek Helm MK2 Air / 29 / 130mm 130mm
+€434,99
Cane Creek Helm MK2 Air / 29 / 130mm
Tubes

Vittoria Inner Tube / Presta / 29 X 1.95/2.50
Vittoria Inner Tube [OEM] / Presta / 29 X 1.95/2.50
Tubeless Tyre Upgrade and Setup
+€49,99
Tubeless Tyre Upgrade and Setup
Go tubeless
Bottle cages

No Bottle Cages (none)
No Bottle Cages
Sonder Sideblade Black / Left Entry
+€6,99
Sonder Sideblade
The Sideblade bottle cage not only gives your water bottle a lovely, secure hug, but its side loading system makes it easier to access when you need a drink, making staying hydrated a joy even when you've got a load of frame bags to work around!

The Side blade is geared at letting you get to your water when you've got a bike packed up with frame bags, this means that it's also ideal for compact and full-sus frames where a standard loading bottle cage system just won't fit, you can choose which side you'd like to access your bottle by with a twist of the cage in the mount before your ride.

Made of polycarbonate, the Sideblade is also super light and super duper tough - hooray!

Mudguards

No Mudguards (none)
No Mudguards
Sonder Fender Front MTB
+€5,99
Sonder Fender
The Sonder Front Fender protects you from excessive mud splatter on wet, mucky trails. These lightweight plastic mudguards don’t require any special fixings on your bike and can be strapped straight onto your forks with 4 cable ties (supplied).

Made from durable polypropylene, if the Fender does meet its end, it can be easily recycled by most councils or at your local recycling centres.

Pedals

No Pedals (none)
No Pedals
Sonder Reko
+€59,99
Sonder Reko
The Reko are lightweight SPD pedals designed gravel riding and cross-country mountain biking over longer distances.

The Reko's platform-free design reduces the overall weight of the pedals to 145g per pedal for lighter, faster riding. Double-sided SPD bindings are easy to clip in and out of and their compact design means they're less likely to clog with muck on filthy winter rides.

The clip-in design improves the efficiency of your pedal strokes, saving energy on long rides and improving power transfer on climbs, and gives you more control of the back end of the bike.
Sonder Slingshot Black
+€74,99
Sonder Slingshot
The wide platform Slingshot pedal is designed to provide the support, control and confidence you need for a variety of riding, whether on trail, gravel or road.

Wide 87x90 platform made from 6061 aluminium

Double-sided adjustable SPD clips

Chromoly axle with sealed bearings

The Slingshot's wide foot platform provides plenty of support to the foot for more comfortable pedalling over long distances, reducing hot-spots. This additional foot support also gives you greater control of the rear end of the bike on tight turns or technical trail.

If you're using the Slingshot for mountain biking, the pedal's wide surface gives you a platform to stand on unclipped, ready to bail out if needed, on heart rate-quickening sketchy sections.

With double-sided SPD clips and a large pedal area, the Slingshot is easy to clip in and out of in a hurry. A clipless system provides greater pedalling efficiency when climbing and more control when descending.

Initial Price: €2.549
Extras: €0
Total Price: €2.549

Description
Features
Build Spec
Geometry and Sizing
Frame Spec
Reviews

Description

The Signal is fast, it’s for flat out speed.

It pedals like an XC bike, descends like an enduro bike, and captures the rawness of riding a hardtail on fast, flowy singletrack. Stand up, sprint, and ride it hard on groomed descents at Llandegla and Glentress or take it to the big mountains and get loose.

At a glance

SRAM SX Eagle 12-speed groupset
Rockshox Recon Silver RL fork
Sonder Nova 29" wheelset
Hand-welded titanium frame

That low BB and long wheelbase gives a planted and stable feel through the corners and on high speed descents, the low stack height leaves you with less of that ‘tall’ 29er feeling – you’ll feel like you’re in the bike, not on the bike.

Big wheels roll faster. The 29 in wheels can be paired with 2.2 to 2.6ins tyres with clearance for winter conditions.

The titanium Signal frame is stiff, light and durable. 3Al 2.5V Aeronautical grade titanium tubing softens trail buzz and provides the engaging and lively feel that only Titanium can.

Why SX Eagle?

SRAM Eagle drivetrains are designed, engineered and manufactured to work as complete drivetrain systems. Its 1x drivetrain is built to be lightweight, strong and intuitive, with the gear range to ride on any terrain.

SX Eagle provides the same Eagle performance benefits as NX Eagle, but at a lower price point. The main differences stem from the choice of materials and finish options, but functionally SX is fully compatible with SRAMs Eagle groupset.

Features

2.6” tyre clearance

Bucketloads of clearance for 2.6” tyres gives you the benefits of higher volume tyres without getting clogged up in UK conditions.

Aggressive trail geometry

Neil has designed the Signal Ti to suit his aggressive riding style. A low bottom bracket makes it corner like its on rails, a spacious reach gives you room to move around on the bike, and the 66/74 head and seat angles give you the confidence to bomb the descents and while still being able to climb like a mountain goat.

Guided internal cable routing

Guided internally routed cables for a clean look and silent ride.

Titanium frame

Nothing looks quite so good as the famously resilient and durable titanium. Signal Ti’s aeronautical grade titanium tubing absorbs shock to soften the ride without any loss to feel or speed.

Custom available

We can customise any aspect of our Ti bikes. Come to us with what you want and Neil will make it happen.

Build Spec

Frameset
Frame:	Signal Ti Frame \| Titanium
Fork:	RockShox Recon Silver RL \| 130mm (travel)
Headset:	FSA Orbit C-40-ACB

Groupset
Shifters:	SRAM SX Eagle Trigger \| 1x \| 12-speed
Brakes:	SRAM Level \| Hydraulic \| Direct mount
Rotors:	Avid Centreline \| 180mm (front), 160mm (rear) \| 6-bolt
Rear derailleur:	SRAM SX Eagle \| Long cage \| 12-speed
Chainset:	SRAM SX Eagle \| 170mm \| 32t
Cassette:	SRAM PG1210 \| 11-50t \| 12-speed
Chain:	SRAM NX Eagle \| 12-speed
Bottom bracket:	SRAM PowerSpline \| 73mm \| 118mm

Wheelset
Wheels:	Sonder Nova 29" UK Made
Front tyre:	Goodyear Newton MTF Trail Tubeless \| 29 x 2.5" \| Black
Rear tyre:	Goodyear Newton MTR Trail Tubeless \| 29 x 2.4" \| Black
Tubes:	Vittoria Inner Tube

Finishing kit
Handlebars:	Sonder Aspect Riser \| 78cm
Stem:	Sonder Piskie
Seatpost:	Sonder Seatpost \| 31.6mm
Saddle:	Sonder Abode
Grips:	Sonder Clutch \| Black

Weight
Frame:	S: 1.9kg; M: 1.95kg; L: 2.0kg; XL: 2.06kg
Build:

Pedals not included with full builds
Specifications are subject to change without notice

Geometry and Sizing

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:
Small: Riders between 5ft 2in and 5ft 7in
Medium: Riders between 5ft 6in and 5ft 10in
Large: Riders between 5ft 9in and 6ft 2in
X-Large: Riders of 6ft 2in +

Size	Small	Medium	Large	X-Large
ST - Seat tube	400	425	465	485
ETT - Effective Top Tube	585	606	634	664
HT - Head tube	100	105	115	125
HA - Head angle	66	66	66	66
SA - Seat tube angle	74	74	74	74
CS - Chainstay	430-450	430-450	430-450	430-450
BB - BB drop	65	65	65	65
FO - Fork offset	42/51	42/51	42/51	42/51
WB - Wheelbase	1127	1149	1183	1220
SO - Standover	730	738	760	772
RE - Reach	412.5	432.5	457.5	485
SK - Stack	601	606	615	624
Tyre

Frame Spec

Titanium 29er hardtail mountain bike frame

Weight: S: 1.9kg; M: 1.95kg; L: 2.0kg; XL: 2.06kg
3Al/2.5V Aeronautical Grade Hand Welded Titanium Frame
148mm boost thru axle standard
Clearance for 2.6” tyres
Headset: IS42/28.6 \| IS52/40
73mm BB shell
Internal, fully guided cable routing
Stealth dropper routing
31.6mm seatpost diameter, 34.9mm clamp
Optimised for 130mm travel suspension fork (42 or 51mm offset)

Reviews