Ibis Oso Trail 90
Built for all-day trail rides, after-work laps, and backcountry missions, the Oso TR 90 combines a Bosch Performance Line CX Gen 5 motor, 150mm rear travel, a 160mm fork, and balanced trail geometry. Designed for riders who want a capable e-MTB that can climb efficiently and still feel composed on descents, it delivers a versatile ride for a wide range of terrain.
Key highlights
- 160mm front / 150mm rear travel built for trail riding, technical climbs, and confident descending.
- dw-link suspension with V5 kinematics for traction, support, and efficient pedaling.
- Mixed or 29” wheel configurations depending on frame size, with modular dropout options.
- SRAM Eagle 90 Transmission designed for durability and shifting under load.
Design and durability
- Carbon frame with 150mm rear travel and Bosch CX Gen 5 drive system.
- Modular chassis allows wheel size, chainstay length, and travel configuration changes.
- Size-specific geometry, chainstay lengths, bottom bracket heights, and suspension kinematics.
- Lifetime frame warranty and lifetime bushing warranty.
Ride characteristics
- Balanced trail feel for long rides, varied terrain, and repeat laps.
- Powerful Bosch assist helps make steep climbs and bigger routes more manageable.
- Stable and capable on descents without feeling like a full gravity bike.
- Size-specific design helps maintain consistent handling across the full size range.
What makes the Oso TR different
- Bosch Gen 5 power: The Performance Line CX motor delivers quiet, natural-feeling assist with up to 120Nm of torque and a 600% support multiplier.
- 600Wh battery: Internal battery keeps weight lower and centered, with optional PowerMore 250Wh range extender compatibility for up to 850Wh total capacity.
- Extra-Medium sizing: Ibis adds an XM size in the middle of the range to improve fit options for more riders.
- Modular dropout system: Bolt-on dropouts and brake mounts allow chainstay length and wheel size configuration changes.
Fit, setup, and recommended upgrades
- We want every rider to get the most out of their new Oso TR.
- Local pickup customers: We can help dial in suspension sag, rebound, Bosch system setup, and cockpit position before your first ride.
- Shipped bikes: Bikes arrive professionally assembled and test ridden. Our staff can assist with setup questions if needed.
- Recommended upgrades: Pedals, tire inserts, frame protection, and brake pad options depending on terrain and riding style.
Ibis Oso TR 90 – Full specifications
Frame
| Frame | Carbon fiber, 150mm rear travel, dw-link suspension, Bosch CX Gen 5 compatible |
Suspension
| Fork | RockShox Lyrik Base, 160mm |
| Rear shock | RockShox Super Deluxe Select+, 230x60mm |
Motor & battery
| Motor | Bosch Performance Line CX, Generation 5 |
| Battery | 600Wh internal battery, PowerMore 250Wh range extender compatible |
| Display | Bosch Kiox 400c |
Wheels & tires
| Rims | Blackbird Send Alloy, Send I front / Send II rear |
| Front hub | Blackbird Hub |
| Rear hub | Blackbird Hub |
| Tires | Maxxis Assegai EXO+ 29x2.5 front / Maxxis DHR II DD MaxxTerra rear |
Drivetrain
| Shifter | SRAM Eagle 90 Transmission |
| Rear derailleur | SRAM Eagle 90 Transmission |
| Crankset | SRAM EX1, 160mm, 34T steel ring |
| Cassette | SRAM XS 1275 Transmission T-Type, 10-52T |
| Chain | SRAM GX Eagle Transmission T-Type |
Brakes
| Brakes | SRAM Maven Base |
| Rotors | SRAM Centerline 220mm front / rear, 6-bolt |
Cockpit
| Handlebar | Blackbird 35 Aluminum Riser Bar, 800mm |
| Stem | Blackbird 35 Stem, size-specific length |
| Seatpost | KS Vantage Dropper, 34.9mm, size-specific travel |
| Saddle | WTB Silverado Fusion CrMo 142 |
Sizing and fit
Height ranges are based on Ibis’ recommended sizing chart.
| Frame size | Recommended height |
|---|---|
| Small | 5’0” – 5’6” |
| Medium | 5’5” – 5’9” |
| Extra-Medium | 5’8” – 6’0” |
| Large | 5’11” – 6’3” |
| X-Large | 6’2” – 6’7” |
Frame geometry (mm and degrees) Tap to open chart
| Size | SM | MD | XM | LG | XL |
|---|---|---|---|---|---|
| Wheel size | MX | MX | 29” | 29” | 29” |
| Travel (front/rear) | 160 / 150 | ||||
| Reach | 438 | 460 | 484 | 508 | 532 |
| Stack | 619 | 630 | 638 | 648 | 660 |
| Head tube angle | 63.2° | 64° | 64° | 64° | 64° |
| Seat tube length | 381 | 381 | 405 | 432 | 450 |
| Seat tube angle | 77° | 77° | 77.5° | 78° | 78.5° |
| Chainstay | 440 | 440 | 455 | 455 | 455 |
| Wheelbase | 1222 | 1241 | 1285 | 1315 | 1346 |
| BB height | 339 | 342 | 345 | 348 | 351 |
| Standover | 697 | 708 | 736 | 747 | 763 |
| Recommended dropper | 140–170 | 140–170 | 180–210 | 180–210 | 180–210 |
| Water bottle | 22oz | 22oz | 26oz | 26oz | 26oz |
Component note: We reserve the right to make changes to product and component information at any time without notice, including equipment, specifications, models, colors, and materials.
