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Last chance to buy
Cortex / Medium Short-travel 29er
£1,299 £2,349
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 Shimano SLX?
Shimano drivetrains are designed, engineered and manufactured to work as complete drivetrain systems. Shimano's new microspline hub means that you can run a 10 tooth cassette for a huge gear range. The new EV shifters and brakes provide loads of adjustment to get the perfect position as well as a rock-solid feel on the bars. And the 4-pot brakes provide consistent and reliable stopping power.
**Lead image represents the bike for sale, please see store pics for the actual bike.
Features
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.
Build Spec
| Frameset | |
|---|---|
| Frame: | Cortex Frame | 6061-T6 Aluminium, Heat-Treated |
| Fork: | RockShox Psylo Silver R | 140mm (travel) |
| Shock: | RockShox Deluxe Select+ | 210 x 50 |
| Headset: | FSA Orbit C-40-ACB |
| Groupset | |
|---|---|
| Shifters: | Shimano SLX M7100 | 1x | 12-speed |
| Brakes: | Shimano SLX M7120 | Hydraulic | Post mount |
| Rotors: | Shimano RT66 | 203mm (front), 180mm (rear) | 6-bolt |
| Rear derailleur: | Shimano SLX M7100 | Long cage | 12-speed |
| Chainset: | Shimano SLX M7100 | 170mm | 32t |
| Cassette: | Shimano CS-M7100 | 10-51t | 12-speed |
| Chain: | Shimano CN-M7100 | 12-speed |
| Bottom bracket: | Shimano MT801 | BSA |
| 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: | WTB | 29 x 2.4-2.8" |
| Finishing kit | |
|---|---|
| Handlebars: | Sonder Aspect Riser | 780mm |
| Stem: | Sonder Piskie |
| Seatpost: | X-Fusion Manic | 31.6mm |
| Saddle: | Sonder Abode |
| Grips: | Sonder Clutch | Black |
| Weight | |
|---|---|
| Frame: | S: TBC M: TBC L: TBC XL: TBC |
| 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
Sizing
| Size | Small | Medium | Large | X-Large |
| Rider Height | 5ft 2in - 5ft 7in (158-173cm) | 5ft 6in - 5ft 10in (170-177cm) | 5ft 9in - 6ft 2in (175-187cm) | 6ft 2in + (187cm +) |
| ST - Seat tube | 400 | 410 | 440 | 460 |
| ETT - Estimated top tube | 576 | 597 | 625 | 647 |
| HT - Head tube | 100 | 105 | 115 | 125 |
| HA - Head angle | 65 | 65 | 65 | 65 |
| AC - Axle to crown | 550 | 550 | 550 | 550 |
| SA - Seat angle | 75.6 | 75.6 | 75.6 | 75.6 |
| CS - Chainstay | 440 | 440 | 445 | 445 |
| BB - BB drop | 40 | 40 | 40 | 40 |
| FO - Fork offset | 44 | 44 | 44 | 44 |
| WB - Wheelbase | 1173 | 1195 | 1229 | 1253 |
| RE - Reach | 420 | 440 | 465 | 485 |
| SK - Stack | 608 | 614 | 624 | 633 |
Frame Spec
Alloy 29er short travel full suspension trail bike
| Weight: S: 2.73kg; M: 2.91kg; L: 3.05kg; XL: 3.11kg |
|---|
| Hydroformed and custom butted alloy frame tubing |
| Internal cable routing |
| Rear Shock: Rockshox Deluxe Select+ 190 x 45mm |
| Horst link suspension layout |
| 120mm rear travel; 130mm fork travel |
| Clearance for up to 29 x 2.6" wide tyres |
| 73mm BSA threaded bracket shell |
| 148 x 12mm 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) |
Standard delivery to UK addresses is free over £60.
Next Day deliveries will be shipped same day if you place your order before 2pm Monday - Friday.
If you are not happy or have changed your mind, you can return your unused product within 123 days of placing the order for a refund.
Simply return it to us, free of charge, with all the original packaging.