• Cortex SX in Storm Blue
  • Cortex SX Eagle
  • Cortex SLX in Mint
    • Sale

    Cortex SX Eagle

    $2,249 $2,999

    1

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    2

    Customize

    3

    Select Accessories

    Reset

    Built to Order. Be Riding 1 July.

    1

    Select Options

    Edit

    • Size
      Please select an available Size
    • Colour
      • Cortex Frame [V2]
      • Cortex Frame [V2]
      Please select an available Colour
    • Size:

    • Colour:

    2

    Customize

    Edit

    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 [OEM]
    Sonder Aspect Riser 780mm

    +$0.00

    Sonder Aspect Riser [OEM]
    Sonder Aspect Riser 780mm

    +$0.00

    sonder scope handlebars
    Sonder Scope Handlebar 760mm

    +$64.99 +$24.99

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

    +$103.99 +$64.99

    Saddle

    Sonder Abode [OEM]
    Sonder Abode Black / 138

    +$0.00

    Sonder Abode [OEM]
    Sonder Abode Black / 158

    +$0.00

    Sonder Kura [OEM]
    Sonder Kura

    +$61.99 +$51.99

    Sonder Zone [OEM]
    Sonder Zone 133 / Black

    +$49.99 +$47.49

    Sonder Zone [OEM]
    Sonder Zone 152 / Black

    +$49.99 +$47.49

    Brooks B17 Saddle [OEM]
    Brooks B17 Saddle Black

    +$189.99 +$169.99

    Seatpost

    Sonder Seatpost [OEM] 31.6
    Sonder Seatpost 31.6 400mm

    +$0.00

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 125mm

    +$155.99

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 150mm

    +$155.99

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

    +$155.99

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 125mm

    +$0.00

    X-Fusion Manic Drop Seatpost and Lever
    X-Fusion Manic Drop Seatpost and Lever 31.6mm / 150mm

    +$0.00

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

    +$0.00

    sonder ingot 31.6mm inline titanium seatpost - closed
    Sonder Ingot 31.6mm Inline

    +$194.99 +$145.99

    sonder ingot 31.6mm layback titanium seatpost - closed
    Sonder Ingot 31.6mm Layback

    +$194.99 +$145.99

    sonder ingot 27.2mm layback titanium seatpost
    Sonder Ingot 27.2mm Layback

    +$194.99 +$145.99

    sonder ingot 27.2mm straight inline seatpost
    Sonder Ingot 27.2mm Inline

    +$194.99 +$145.99

    Cane Creek eeSilk+ [OEM]
    Cane Creek eeSilk+ 27.2mmm / Alloy

    +$298.99 +$239.99

    Cane Creek eeSilk+ [OEM]
    Cane Creek eeSilk+ 31.6mm / Alloy

    +$298.99 +$239.99

    Stem

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

    +$0.00

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

    +$0.00

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

    +$0.00

    sonder talo bike stem
    Sonder Talo 35

    +$79.99 +$52.99

    sonder talo bike stem
    Sonder Talo 45mm

    +$79.99 +$52.99

    Forks

    RockShox Psylo Silver R [OEM] / 29 / 140mm
    RockShox Psylo Silver R / 29 / 140mm

    +$0.00

    RockShox Pike [OEM] / 29 / 140mm
    RockShox Pike / 29 / 140mm

    +$0.00

    RockShox Pike [OEM] / 29 / 140mm
    RockShox Pike / 29 / 140mm

    +$324.99

    RockShox Pike Ultimate [OEM] / RC2 / Charger 3.1 / 29 / 140mm
    RockShox Pike Ultimate / RC2 / Charger 3.1 / 29 / 140mm

    +$0.00

    RockShox Pike Ultimate [OEM] / RC2 / Charger 3.1 / 29 / 140mm
    RockShox Pike Ultimate / RC2 / Charger 3.1 / 29 / 140mm

    +$519.99

    RockShox Pike Ultimate [OEM] / RC2 / Charger 3.1 / 29 / 140mm
    RockShox Pike Ultimate / RC2 / Charger 3.1 / 29 / 140mm

    +$844.99

    Cane Creek Helm MK2 Air [OEM] / 29 / 140mm
    Cane Creek Helm MK2 Air / 29 / 140mm

    +$1,234.99

    Cane Creek Helm MK2 Air [OEM] / 29 / 140mm
    Cane Creek Helm MK2 Air / 29 / 140mm

    +$909.99

    Cane Creek Helm MK2 Air [OEM] / 29 / 140mm
    Cane Creek Helm MK2 Air / 29 / 140mm

    +$389.99

    Shock

    Rockshox Deluxe Select / 210 / 50
    Rockshox Deluxe Select / 210 / 50

    +$0.00

    Rockshox Deluxe Ultimate / 210 / 50
    Rockshox Deluxe Ultimate / 210 / 50 Black

    +$0.00

    Rockshox Deluxe Ultimate / 210 / 50
    Rockshox Deluxe Ultimate / 210 / 50 Black

    +$194.99

    Cane Creek DBair IL / 210 / 50
    Cane Creek DBair IL / 210 / 50 Black

    +$389.99

    Cane Creek DBair IL / 210 / 50
    Cane Creek DBair IL / 210 / 50 Black

    +$259.99

    Wheels

    Sonder Nova 29 [OEM] Wheelset / UK Build
    Sonder Nova 29 Wheelset / UK Build HG

    +$0.00

    Sonder Nova 29 [OEM] Wheelset / UK Build
    Sonder Nova 29 Wheelset / UK Build Microspline

    +$0.00

    Sonder Alpha 29 [OEM] Wheelset / UK Build
    Sonder Alpha 29 Wheelset / UK Build HG

    +$428.99 +$220.99

    Sonder Alpha 29 [OEM] Wheelset / UK Build
    Sonder Alpha 29 Wheelset / UK Build Microspline

    +$428.99 +$220.99

    Sonder Alpha 29 [OEM] Wheelset / UK Build
    Sonder Alpha 29 Wheelset / UK Build XD

    +$428.99 +$220.99

    Sonder Alpha 29 [OEM] Wheelset / UK Build
    Sonder Alpha 29 Wheelset / UK Build Microspline

    +$0.00

    Sonder Alpha 29 [OEM] Wheelset / UK Build
    Sonder Alpha 29 Wheelset / UK Build XD

    +$0.00

    Sonder Alpha 29 [OEM] Wheelset / UK Build
    Sonder Alpha 29 Wheelset / UK Build HG

    +$0.00

    Tubes

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

    +$0.00

    Tubeless Tyre Upgrade and Setup
    Tubeless Tyre Upgrade and Setup

    +$57.99

      3

      Select Accessories

      Edit

      Bottle Cages

      No Bottle Cages
      No Bottle Cages (none)

      +$0.00

      Sonder Buzz Wire
      Sonder Buzz Wire Single

      +$0.00

      Sonder Buzz Wire
      Sonder Buzz Wire Pair

      +$0.00

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

      +$8.99 +$7.99

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

      +$13.99 +$11.99

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

      +$8.99 +$7.99

      Sonder Blade
      Sonder Blade Black

      +$22.99 +$18.99

      Sonder Blade
      Sonder Blade Black / Pair

      +$38.99 +$31.99

      Sonder Ti Wire Bottle Cage
      Sonder Ti Wire Bottle Cage Single

      +$35.99 +$29.99

      Sonder Ti Wire Bottle Cage
      Sonder Ti Wire Bottle Cage Pair

      +$57.99 +$46.99

      Front Lights

      No Front Light
      No Front Light (none)

      +$0.00

      Rear Lights

      No Rear Light
      No Rear Light (none)

      +$0.00

      Lights Accessories

      No Bike Light Accessories
      No Bike Light Accessories (none)

      +$0.00

      Mudguards

      No Mudguards
      No Mudguards (none)

      +$0.00

      sonder fender
      Sonder Fender Front MTB

      +$8.99 +$7.99

      sonder defender mudguards pair
      Sonder Defender Mudguards 45mm

      +$44.99 +$38.99

      sonder defender mudguards pair
      Sonder Defender Mudguards 55mm

      +$44.99 +$38.99

      SKS Commuter Mudguard Set
      SKS Commuter Mudguard Set 28 / 45mm / Black

      +$49.99

      Pedals

      No Pedals
      No Pedals (none)

      +$0.00

      Sonder Torque
      Sonder Torque Black

      +$57.49 +$49.99

      distortion flat mountain bike pedal
      Sonder Distortion

      +$64.99

      reko clipless bike pedal
      Sonder Reko

      +$109.99 +$64.99

      sonder Jekyll clipless and flat hybrid pedal
      Sonder Jekyll Black

      +$119.99 +$96.99

      sonder slingshot clipless pedal
      Sonder Slingshot Black

      +$129.99 +$104.99

        Initial Price

        Cortex SX Eagle / Select a frame...
        $2,249.00

        Extras

        $0.00

        Total Price

        $2,249.00
        Built to Order. Be Riding 1 July.

        Fast and agile, Cortex is a mid-travel full suspension trail bike for big mountain epics on all terrain and flying round your local trail centre. It comes alive on long technical descents with 140mm travel up front and 135mm at the rear, big wheels and a stiff, responsive frame.



        With bang up to date geometry, Cortex inspires confidence with a playful character. Stand up and mash on the pedals out of turns, manual sections of trail and pop off tree stumps, rocks and roots. Smash out short and loose technical climbs, flat-out descents and tight techy singletrack sections. The harder you push the bigger your grin.

        The tried and tested Horst link design keeps the suspension active when braking. We've fine tuned the leverage curve and worked with SRAM RockShox to produce a rear shock that's custom-tuned for the Cortex - maximum downhill performance while maintaining the all-day pedalling efficiency from its predecessor. Cortex is your do-it-all bike of choice for lakeland 30-milers and flat-out trail centre laps alike; with enough travel to carry speed over longer sections of rough ground and a lively, playful feel through the twisty bits.

        Cortex' frameset is hand-welded from 6061 double-butted aluminium for the perfect mix of weight, rigidity and durability; with a slim hydroformed top-tube and down-tube designed to improve stiffness with just enough compliance to get you out of trouble. Internal cable and stealth dropper routing means clean lines, dampened with foam liners for a quiet ride. Dialed-in geometry and 2.4” tyre clearance gives heaps of grip; a comfortable and efficient climbing position for big days in the saddle; and a stable, spirited platform for smashing down descents.

        Why SRAM 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 SRAM's Eagle groupset.

        Your actual build date will depend on additional components you specify and from receipt of full payment. For any queries contact our Sonder team on +44 1773 417006.

        • Cortex SX in Storm Blue
        • Cortex SX Eagle
        • Cortex SLX in Mint