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Last chance to buy
Cortex / Medium
£1,799 £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 SRAM NX Eagle?
SRAM Eagle drivetrains are designed, engineered and manufactured to work as complete drivetrain systems. Its 1x drivetrain is a solution that is built to be lightweight, strong and intuitive, with the gear range to ride on any terrain.
NX Eagle provides the same Eagle performance benefits as the rest of the Eagle family. Slotting in just under the higher priced GX, the main differences are extra weight and the 11-50 range is not as wide as the 10-50 offered with GX, but functionally NX is 12-speed and fully compatible with SRAMs Eagle groupset.
**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.

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 |
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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 £50.
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.