Cube Ams Zero99 C:68X SLX 29 Mountain Bike 2026 - XC Full Suspension MTB

The Cube AMS Zero99 C:68X SLX 29 is crafted to give competitive XC riders every possible edge. At the core is Cube’s C:68X® carbon frame, weighing just 1,600g thanks to advanced Twin Mold technology. Geometry is shaped by input from elite XC racers, with optimised chainstay length for climbing efficiency, angle adjustment inserts to fine-tune steering, and clearance for up to 2.4” tyres for extra grip and control.
Key Features:
- C:68X® carbon frame, 1,600g, tuned XC geometry with angle adjustment
- Fox 34 SC Float Factory GRIP SL fork, 110mm, Kashima coated
- Fox Float SL Factory rear shock, 110mm, Kashima coated
- SRAM X0 Eagle AXS 12-speed wireless Transmission
- Magura MT8 SL hydraulic disc brakes, 180/160mm rotors
- Newmen Phase 30 carbon wheels, tubeless-ready
- Fox Transfer Factory dropper post with Kashima coating
- Available with 0% APR finance
Suspension is handled by Fox Factory Kashima-coated components. A Fox 34 SC Float Factory GRIP SL fork with 110mm travel delivers stiffness and precise control up front, while the Fox Float SL Factory rear shock balances lightweight efficiency with supple performance on rough ground. Both are controlled by remote lockouts, letting you switch between climbing efficiency and full suspension support at speed.
The SRAM X0 Eagle AXS Transmission brings wireless, fully integrated shifting performance to the Zero99 SLX. Built tough for racing, it delivers instant, precise gear changes with a wide-range 10-52T cassette. Paired with a 32T chainset, it offers gearing for steep climbs, flat-out sprints and everything in between.
Braking comes from Magura MT8 SL hydraulic discs, offering lightweight stopping power with consistent modulation on technical descents. The wheels are Newmen Phase 30 carbon, stiff and responsive, wrapped in Schwalbe Racing Ray and Racing Ralph 2.35” Super Race tyres for race-ready speed and grip.
Other premium touches include a Fox Transfer Factory dropper post with Kashima coating for confident descending, a Newmen Advanced carbon handlebar for precise control, and an ACID Nuance SLT X carbon saddle for comfort without compromise.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | C:68X® Monocoque Advanced Twin Mold Technology, FSP 4-Link, Boost 148, UDH™ |
| Fork | Fox 34 SC Float Factory GRIP SL, 2-Position Remote, Tapered, 15x110mm, 110mm, Kashima Coated |
| Rear Shock | Fox Float SL Factory Remote, 190x40mm, 2-Position Remote, Kashima Coated |
| Headset | ACROS Integrated, Top 1 1/8", Bottom 1 1/2", Fiber Inserts for Angle Adjustment |
| Stem | Newmen Evolution SL 318.2, 31.8mm |
| Bars | Newmen Advanced 318.0, Carbon, 740mm |
| Front Brake | Magura MT8 SL, Hydr. Disc Brake (180/160) |
| Rear Brake | Magura MT8 SL, Hydr. Disc Brake (180/160) |
| Rear Mech | Sram X0 Eagle AXS™ Transmission, 12-Speed |
| Shifters | Sram AXS™ Pod Controller |
| Speed | 12 |
| Rims | Newmen Phase 30 light/light Carbon, 28/28 Spokes, 15x110mm/12x148mm, Tubeless Ready |
| Front Tyre | Schwalbe Racing Ray, Super Race, Addix Speed, Kevlar, 2.35 |
| Rear Tyre | Schwalbe Racing Ralph, Super Race, Addix Speed, Kevlar, 2.35 |
| Seat Post | Fox Transfer Factory 30.9mm, Kashima Coated |
| Saddle | ACID Nuance SLT X Carbon |
| Chainset | Sram X0 Eagle™ Transmission, 32T |
| Bottom Bracket | Sram DUB MTB Wide, 92mm Pressfit |
| Chain | Sram GX Eagle™ Transmission |
| Cassette | Sram XS-1275, 10-52T |
Cube AMS Size Chart
|
Size |
Height (cm) | Height (in) |
|
S - 16" |
163 – 170 | 5’4” – 5’7” |
|
M - 18" |
169 – 179 | 5’6” – 5’10” |
| L - 20" | 178 – 188 | 5’10” – 6’2” |
| XL - 22" | 187 - 197 | 6’2” – 6’5” |
What size frame do I need if I am between sizes? - read here
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