• Sonder Signal Ti Pinion
  • Signal Ti Pinion
    • Special Offer

    Signal Ti Pinion

    Aggressive titanium 29er hardtail

    £3,899 £4,299

    or from £67 /month V12 logo


    Select Options




    Select Accessories


    An aggressive titanium 29er hardtail trail bike with Pinion C1.12 gearbox and Cane Creek Helm MK2 Air fork: the bike for flat-out speed and sessioning the groomed trail centre trails
    Buy Now. Be Riding Next Week.

    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


    Select Options


    • Size
    • Size:




    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.


    Sonder Aspect Riser [OEM]
    Sonder Aspect Riser 780mm


    Sonder Aspect Riser [OEM]
    Sonder Aspect Riser 780mm


    sonder aspect carbon flat handlebar flatbar
    Sonder Aspect Carbon Riser 780mm

    +£99.99 +£64.99

    sonder scope handlebars
    Sonder Scope Handlebar 760mm

    +£39.99 +£32.49


    Sonder Abode [OEM]
    Sonder Abode Black / 138


    Sonder Zone [OEM]
    Sonder Zone 133 / Black

    +£34.99 +£29.99

    Sonder Zone [OEM]
    Sonder Zone 152 / Black

    +£34.99 +£29.99

    Sonder Kura [OEM]
    Sonder Kura

    +£47.99 +£39.99

    Brooks Cambium C17 Saddle [OEM] / All Weather / Black
    Brooks Cambium C17 Saddle / All Weather / Black

    +£114.99 +£92.49

    Brooks B17 Saddle
    Brooks B17 Saddle Standard / Black

    +£134.99 +£109.99


    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 170mm



    Sonder Piskie [OEM]
    Sonder Piskie 31.8mm / 35mm


    Sonder Piskie [OEM]
    Sonder Piskie 31.8mm / 45mm


    Sonder Piskie [OEM]
    Sonder Piskie 31.8mm / 55mm


    sonder talo bike stem
    Sonder Talo 35

    +£44.99 +£37.49

    sonder talo bike stem
    Sonder Talo 45mm

    +£44.99 +£37.49


    RockShox Pike Ultimate RCT3
    RockShox Pike Ultimate RCT3 130mm / 29


    Cane Creek Helm MK2 Air / 29 / 130mm
    Cane Creek Helm MK2 Air / 29 / 130mm 130mm



    WTB [OEM] Inner Tube / 29 / 2.2-2.4
    WTB Inner Tube / 29 / 2.2-2.4 Black


    Tubeless Tyre Upgrade and Setup
    Tubeless Tyre Upgrade and Setup



    Pinion X1 Chain
    Pinion X1 Chain


    Gates Carbondrive
    Gates Carbondrive



      Select Accessories


      Bottle Cages

      No Bottle Cages
      No Bottle Cages (none)


      Sonder Buzz Wire
      Sonder Buzz Wire Single

      +£5.49 +£4.99

      Sonder Buzz Wire
      Sonder Buzz Wire Pair

      +£10.99 +£8.99

      love mud side blade side loading bottle cage left
      Sonder Sideblade Black / Left Entry

      +£6.99 +£5.99

      love mud side blade side loading bottle cage left and right
      Sonder Sideblade Black / PAIR

      +£9.99 +£7.99

      love mud side blade side loading bottle cage right
      Sonder Sideblade Black / Right Entry

      +£6.99 +£5.99

      Sonder Blade
      Sonder Blade Black

      +£17.99 +£14.99

      Sonder Blade
      Sonder Blade Black / Pair

      +£29.99 +£24.99

      Ti Wire Bottle Cage
      Ti Wire Bottle Cage Single

      +£44.99 +£37.49

      Ti Wire Bottle Cage
      Ti Wire Bottle Cage Pair

      +£79.99 +£64.99

      Front Lights

      No Front Light
      No Front Light (none)


      Tau Front

      +£16.99 +£14.99

      Phase 550
      Phase 550

      +£24.99 +£19.99

      Phase 850
      Phase 850

      +£34.99 +£29.99

      Rear Lights

      No Rear Light
      No Rear Light (none)


      Lights Accessories

      No Bike Light Accessories
      No Bike Light Accessories (none)


      alpkit helmet mount bike light gps
      Helmet Mount Black

      +£7.99 +£6.99

      alpkit cockpit bike light gps mount
      Garmin Outfront Mount / Black

      +£24.99 +£19.99


      No Mudguards
      No Mudguards (none)


      sonder fender
      Sonder Fender Front MTB

      +£6.99 +£5.99


      No Pedals
      No Pedals (none)


      Sonder Torque
      Sonder Torque Black

      +£39.99 +£32.49

      reko clipless bike pedal
      Sonder Reko

      +£49.99 +£39.99

      distortion flat mountain bike pedal
      Sonder Distortion

      +£59.99 +£49.99

      sonder slingshot clipless pedal
      Sonder Slingshot Black

      +£79.99 +£64.99

      sonder Jekyll clipless and flat hybrid pedal
      Sonder Jekyll Black

      +£79.99 +£64.99

        Initial Price

        Signal Ti Pinion / Select a frame...



        Total Price

        V12 Interest Free Finance
        Buy Now. Be Riding Next Week.

        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.

        Every Signal Ti Pinion is built to order. This means the geometry, the tube lengths, the specification, everything is chosen exactly for you, your partner and the journeys you'll take together.

        It takes six months from the first conversations we have with you to getting your Signal Ti Pinion for your first ride. In this time we'll talk exactly about what you need and where you're going so that we can design and build your perfect tandem. It's actually a joyful six months, filled with the involvement of having a bike built especially for you, knowing the care and complete obsession over the detail that's going into it. Neil and our team of designers and builders are in touch every step of the way. It's a truly special experience.

        At a glance

        • Pinion C1.12 gearbox
        • RockShocks Pike Ultimate fork
        • Sonder Alpha 29" Uk made wheelset
        • X-Fusion Manic dropper seatpost

        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 Pinion?

        The pinion version of the Signal puts all the moving parts of the gear system out of harm’s way and gives an almost silent, well-balanced ride.

        It’s a low maintenance dream - you can cover 10,000km before you need to think about an oil change. The range of gears is just enormous (600%) and because of the way the gearbox works you can dump all of them in one go if you get caught out at the bottom of a brutal climb. It’s an amazing experience.

        All the weight of the gears are low and central with a pinion gearbox so handling of the Signal Pinion is beautifully balanced and assured.

        Gear Development

        With a 1:1 ratio, one rotation of the crank the chart shows the metres the bike travels forward.

        gear development chart



        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
        Frame:Signal Ti Frame | Titanium
        Fork:RockShox Pike Ultimate | 130mm (travel)
        Headset:FSA Orbit C-40-ACB
        Shifters:Pinion Rotary | 1x | 12-speed
        Brakes:SRAM G2 R | Hydraulic | Post Mount
        Rotors:SRAM Centerline | 180mm (front), 160mm (rear) | 6-bolt
        Gearbox:Pinion C1.12 | 12-speed
        Chainset:Pinion Forged | 170mm | 30t
        Cassette:Pinion Rear Chainring | 30t
        Chain:Pinion X1 | 12-speed
        Bottom bracket:n/a
        Wheels:Sonder Alpha 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:WTB | 29 x 2.2-2.4"
        Finishing kit
        Handlebars:Sonder Aspect Riser | 780mm
        Stem:Sonder Piskie
        Seatpost:X-Fusion Manic | 31.6mm
        Saddle:Sonder Abode
        Grips:Ergon GA2| Black
        Frame:S: 1.9kg; M: 1.95kg; L: 2kg; XL: 2.05kg;
        Build:S: TBC M: TBC L: TBC XL: TBC
        Pedals not included with full builds
        Specifications are subject to change without notice
        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:
        Small: Riders between 5ft 2in and 5ft 7in (157 and 170)cm
        Medium: Riders between 5ft 6in and 5ft 10in (167 and 177cm)
        Large: Riders between 5ft 9in and 6ft 2in (175 and 187cm)
        X-Large: Riders of 6ft 2in + (187cm +)

        Size Small Medium Large X-Large
        ST - Seat tube 400 425 465 485
        ETT - Effective Top Tube 585 606 634.9 665
        HT - Head tube 100 110 120 130
        HA - Head angle 66 66 66 66
        SA - Seat tube angle 74 74 74 74
        CS - Chainstay 430 430 435 435
        BB - BB drop 65 65 65 65
        FO - Fork offset 42/51 42/51 42/51 42/51
        WB - Wheelbase 1125 1147.1 1183 1214.4/td>
        SO - Standover 730 738 760 772
        RE - Reach 419.8 437.8 464.4 492
        SK - Stack 576 585.2 594.6 603.7
        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)

        • Sonder Signal Ti Pinion
        • Signal Ti Pinion