Ibis Oso S 90 — 2026
Ibis Oso S 90 — 2026
The Ibis Oso S 90 brings together Bosch Performance Line CX Gen 5, 140 mm / 130 mm suspension, and a carbon fiber chassis for trail / full-power riding.
Why it belongs on the shortlist
A trail-focused platform for riders who value balanced handling, efficient climbing assistance, and a lively feel across technical singletrack. It is designed to cover long days without losing the character that makes a great mountain bike engaging.
Motor and battery
The Bosch Performance Line CX Gen 5 system delivers Up to 120 Nm and pairs with a 600 Wh; PowerMore 250 compatible battery. This configuration puts climbing support and repeatable vertical at the center of the ride.
Real-world range changes with elevation, support mode, rider mass, temperature, surface, tire setup, and battery condition. Use capacity as a comparison point and plan routes with a practical reserve.
Suspension and control
140 mm of front travel and 130 mm at the rear are paired with the RockShox Pike Base fork and RockShox Deluxe Select+ shock. The 29 inch wheel configuration supports the bike’s intended balance of rollover, cornering response, and descending stability.
Component highlights
| Frame | Carbon fiber |
|---|---|
| Motor | Bosch Performance Line CX Gen 5 |
| Torque | Up to 120 Nm |
| Battery | 600 Wh; PowerMore 250 compatible |
| Travel | 140 mm front / 130 mm rear |
| Fork | RockShox Pike Base |
| Shock | RockShox Deluxe Select+ |
| Drivetrain | SRAM Eagle 90 Transmission |
| Brakes | SRAM Maven Base |
| Wheel configuration | 29 inch |
| Approximate weight | See official complete-build figure |
| Color choices | Silver Surfer |
| US assist configuration | Class 1; assist to 20 mph without throttle |
Fit and sizing
Available size options:
- S
- M
- XM
- L
- XL
Start with the manufacturer chart, then compare reach, stack, standover, wheel setup, and dropper insertion. Riders between sizes should decide whether they prefer a more agile cockpit or a longer, more stable feel.
Setup for the first ride
A qualified technician should verify the wheels, brakes, fastener torque, cockpit, suspension pressure, tire setup, firmware, and complete drive-system operation. Fine-tuning sag, rebound, tire pressure, and controls to the rider makes a meaningful difference on trail.
Battery care
Charge with the supplied system in a dry, ventilated area on a stable surface. Inspect the battery and charger before use, follow the manufacturer’s storage guidance, and keep the system away from impact, extreme heat, and water intrusion.
Warranty
Lifetime frame and bushing warranty; Bosch electronics two years, subject to terms. Refer to the current manufacturer terms for registration, original-owner, component, and territory requirements.
Common questions
What type of rider suits this bike?
Riders looking for a premium trail / full-power e-MTB with full-power assistance and a technically focused component package.
How should I choose a size?
Use height and inseam as a starting point, then compare geometry and handling preference. A professional fit or test ride is the best final check.