Cortex SLX

Photos for illustration purposes. Please check the bike spec for detailed component listings.

Cortex SLX

Short travel 29er full suspension mountian bike

£2,249.00

Fast and agile short travel full sus 29er mountain bike with Shimano SLX 1x12 groupset, Rockshox Recon fork and Deluxe rear shock

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Description

Fast and agile, Cortex is a trail riding, down-country, all terrain mountain bike for seriously epic days out. It comes alive on long technical descents with 120 mm rear travel, big wheels and a stiff responsive frame.

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.

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At a Glance
  • Fast and agile short travel full sus 29er; perfect for mixed terrain and day long epics
  • Frame: Sonder Cortex 120 mm travel, hand-welded 6061 double butted aluminium
  • Fork: Rockshox Revelation RC / 29 / 130mm
  • Rear Shock: Rockshox Deluxe Select+ / 190x45
  • Groupset: Shimano SLX, 1x12, 10-51
  • Brakes: Shimano SLX M7120
  • Seat Post: X-Fusion Manic Drop Seatpost and Lever / 31.6mm / 125mm
  • Wheelset: Sonder Nova 29 / Shimano
  • Up to date geometry for trail bike agility and enduro bike stability

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.

Why 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.

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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
Build Cortex SLX
Frameset
Frame: Cortex Frame
Fork: Rockshox Revelation RC / 29 / 130mm
Shock: Rockshox Deluxe Select+ / 190x45
Headset: Love Mud Rumour / ZS44-ZS56
Seat Clamp:
Group Set
Brake Front: Shimano SLX M7120 Brake / Right / 1000mm
Brake Rear: Shimano SLX M7120 Brake / Left / 2000mm
Rotor Front: Shimano RT66 Rotor / 6 Bolt / 180mm
Rotor Rear: Shimano RT66 Rotor / 6 Bolt / 160mm
Rear Mech: Shimano SLX M7100 Rear Derailleur / 1 / 12
Rear Shifter: Shimano SLX M7100 Shifter / 12 / Direct
Chainset: Shimano SLX M7100 Crankset / 170mm / 32t
Bottom Bracket: Shimano BB52 Bottom Bracket
Chain: Shimano SLX Chain / 12 / 120
Cassette:
Finishing Kit
Stem: Sonder Piskie / 31.8mm / 45mm
Seatpost: X-Fusion Manic Drop Seatpost and Lever / 31.6mm / 125mm
Saddle: Sonder Zone / 133 / Black
Tape/Grips: Sonder Clutch / Black
Handlebar:
Wheelset
Wheels: Sonder Nova 29 Wheelset / Shimano
Front Tyre: Vittoria Mazza / TNT / 29 / 2.4
Rear Tyre: Vittoria Martello / TNT / 29 / 2.35
Tubes:
Weight
Frame: S: 1.97 kg; M: 2.0 kg; L: 2.1 kg; XL: 2.14 kg
Pedals not included with full builds
Geometry and Sizing

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
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
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 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)
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