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Sonder Cortex GX Eagle Revelation

Fast and agile short travel full sus 29er mountain bike with SRAM GX Eagle drivetrain, Revelation fork and Deluxe rear shock

£2199.00

Available on finance, from per month*

Pictures are for illustration and some components and finishing kit of this build may be different. Please refer to the detailed spec sheet before placing an order.

  • Sonder Cortex GX Eagle Revelation - Green - Green
    Green
  • Sonder Cortex GX Eagle Revelation - Crayon - Crayon
    Crayon
  • Sonder Cortex GX Eagle Revelation - Brown - Brown
    Brown

How To Order

All our bikes are built individually to order. If you want to change any part of the spec to suit your needs then get in touch.

  • Cortex Frame

  • 1. Select Size

    Please select a size. See the fitting guide for size information

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    Small
    In Stock
    Medium
    In Stock
    Large
    In Stock
    X-Large
    2. Select Colour

    Please select a colour. If your desired colour is not available, you can request a Stock Alert and you will be emailed when the product is either back in-stock or on pre-order.

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    Brown
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    Crayon
    In Stock
    Green

    Please choose from the options above

    Please make sure you have read and understood the terms of a Pre-Order purchase before placing your order. Payment will be taken immediately and your item will be despatched when stock arrives. If you require additional items please place a separate order as it will be held and sent together. More about Pre Orders

Please allow 20 working days for us to build, check, pack and despatch your Sonder.

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Alpkit Ltd acts as a credit intermediary and offer credit products provided exclusively by Klarna Bank AB (publ). Klarna Bank AB (publ) is Authorised by the Swedish Financial Services Authority (Finansinspektionen) and is subject to limited regulation by the Financial Conduct Authority. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request. Finance is only available to permanent UK residents aged >18, subject to status, terms and conditions apply. Registered office: Sveavägen 46, 111 34 Stockholm, Sweden. Corporation ID number: 556737-0431.
At a Glance

Hand-welded from 6061 double butted aluminium frame for epic days over mixed terrain.

  • Short travel 29er full suspension 130 front and 120mm rear shock
  • Agile over mixed terrain perfect for full day epic rides
  • Well behaved but comes alive on technical descents and UK trail centres
  • 2.2” to 2.6” 29er

With bang up to date geometry, Cortex is confidence inspiring 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 you grin.

Cortex frameset is hand-welded from 6061 double butted aluminium with a tapered ovalised top-tube and large section down-tube for a stiff chassis with just enough compliance to get you out of trouble. 66 head angle, 74.5 seat tube angle, 40 mm bottom bracket drop and a 465 mm reach (size large). Cortex’s dialed in geometry and 2.6” tyre clearance offers a comfortable and efficient climbing position for big miles and a stable, spirited platform for smashing up descents.

Up to Date Trail Bike Geometry

Trail bike Agility with Enduro bike stability, the Cortex has a confidence inspiring, stable and forgiving ride.

Metric Shock Standard

Designed around metric shock sizing standard, with lengthened shocks and shorter strokes that increase bushing overlap for more smooth, supple, sensitive and reactive suspension action.​

Horst link suspension design

The tried and tested Horst link suspension design allows the suspension to stay active when braking.​

Tyre Clearance

​Clearance for up to 29 x 2.6in tyres.

Internal Cable Routing

​Internal routing in the front triangle for clean lines.

Frame spec

Alloy 29er short travel full suspension trail bike

Weight (kg): S: 2.73; M: 2.91; L: 3.05; XL: 3.11
Hydroformed and custom butted alloy frame tubing
Internal cable routing
Rear Shock: Rockshox Deluxe Select+ 190 x 45 mm
Horst link suspension layout
120 mm rear travel; 130 mm fork travel
Clearance for up to 29” x 2.6 in wide tyres
73 mm BSA threaded bracket shell
148 x 12 mm rear thru-axle
31.6mm seat tube, 34.9mm clamp
ZS44/28.6| ZS56/40 headset (frame and rear shock does not come with headset)

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 +

Cortex

Size Small Medium Large X-Large
ST - Seat tube 400 425 465 485
TT - Top tube 587 608 636 658
HT - Head tube 100 105 115 125
HA - Head angle 66 66 66 66
SA - Seat angle 74.5 74.5 74.5 74.5
CS - Chainstay 442 445 447 450
BB - BB drop 40 40 40 40
FO - Fork offset 51 51 51 51
WB - Wheelbase 1169 1191 1220 1244
SO - Stand over TBC TBC TBC TBC
RE - Reach 420 440 465 485
SK - Stack 602 606 615 625
Tyre Diameter 755 755 755 755
Fork Axle to Crown 540 540 540 540
Build Cortex GX Eagle Revelation
Frameset
Frame Cortex
Rear Shock Rockshox Deluxe Select+
Fork Rockshox Revelation RC, 130 mm Travel, 29”
Headset Love Mud Rumour
Spacers Love Mud Rings 35 mm
Seatclamp Love Mud Silent Partner 34.9 mm
Groupset
Brake Front SRAM Guide R
Brake Rear SRAM Guide R
Rotor Front Avid Centreline 160 mm
Rotor Rear Avid Centreline 180 mm
Rear Mech SRAM GX Eagle
Shifter Rear SRAM GX Eagle
Chainset SRAM GX Eagle DUB, 175 mm, 34T chainset
Chain SRAM GX Eagle
Cassette SRAM XG1275 Eagle, 10-50T
Bottom Bracket SRAM DUB
Finishing Kit
Stem Love Mud Piskie Stem, 31.8 mm, 35 mm
Seatpost X-Fusion Manic Drop Seatpost, 31.6 mm, 150 mm drop
Saddle Love Mud Abode
Grips Love Mud Clutch
Handlebar Love Mud Aspect Riser
Wheels
Rims Love Mud Hobo 29er / Shimano
Tyre Rear WTB Trail Boss 2.4, Tough Fast Rolling
Tyre Front WTB Vigilante 2.5, Light High Grip
Tubes WTB
Weight
Frame (inc shock) S: TBC M: TBC L: TBC XL: TBC
Built S: TBC M: TBC L: TBC XL: TBC

Swapouts and Upgrades

You can interchange Love Mud components on this build at no additional cost. So if you want a different length of stem, a particular saddle or bar then let us know in the notes section in the checkout and we'll get in touch. We also hold big stocks of SRAM, Rockshox, WTB and regular build with Shimano, Hope, Cane Creek. We'll build your Sonder with any part that suits your needs. Give us a call, with the same experienced mechanic helping throughout your build you know who to call if there's anything you want to know.

Click here for more information

Faqs

Support

Alpine Bond Warranty

We offer a 10 year guarantee on both our handmade titanium and Reynolds steel frames. 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.

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