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The Ibis Oso HD Eagle 90 Ebike is built for riders who take gravity seriously
What Our Gearhead® Experts Are Saying:
"I reach for the Oso HD Eagle 90 Ebike when the terrain demands maximum capability. The Fox Factory 38 fork and Float X2 shock deliver premium suspension feel, the SRAM Maven Silver brakes hold firm at speed, and the Bosch CX Gen 5 motor with 100Nm keeps the climb manageable. This is an eMTB for riders who want gravity performance with pedaling range."
Who It's For
Advanced riders chasing technical terrain and long mountain days.
The Oso HD Eagle 90 Ebike fits confident, experienced riders who want gravity capable geometry and motor assisted climbing on demanding trails.
What It's For
Technical descents, shuttle laps, and big mountain missions.
Built for chunky rock gardens, rooted descents, and terrain that rewards travel and composure. The 600Wh battery with PowerMore compatibility handles long days without range anxiety.
Why We Like It
Factory suspension, powerful brakes, and a Bosch motor that transforms what you can climb.
The Ibis Oso HD Eagle 90 Ebike runs a carbon frame with gravity tuned geometry and a slack head angle for confident descending. The modular dropout system supports chainstay adjustment and mixed wheel size configurations.
Fox Factory 38 fork, Float X2 shock, and SRAM Maven Silver brakes deliver premium performance. The SRAM Eagle 90 Transmission with a 10 to 52 tooth cassette covers all terrain.
Bosch CX Gen 5 puts out up to 750W and 100Nm of torque with natural pedal feel. The 600Wh battery pairs with PowerMore for up to 850Wh total capacity on big days.
Heads up. We do our best to keep bike specs and images current, but occasional component changes can happen without warning and sometimes the photos might not show the exact build you'll receive. If you want to double check the details, our Gearheads are always here to help.
Details
- Bosch CX Gen 5 motor makes steep, technical climbs feel manageable
- 600Wh battery with PowerMore support so long days rarely end early
- Modular carbon frame lets you adjust fit and wheel size as you grow
- Fox Factory 38 fork smooths out rough terrain so you stay in control
- Float X2 shock keeps the rear wheel tracking so nothing catches you off guard
- Maven Silver brakes give you reliable stopping power on big descents
- Eagle 90 Transmission shifts precisely so you can focus on the trail
- Kiox 400c display keeps battery, speed, and assist mode easy to read
- Item #IBSB0FG
- Frame Material
- Carbon
- Suspension
- dw-link
- Rear Shock
- Fox Factory Float X2
- Rear Travel
- 165mm
- Fork
- Fox Factory 38 Grip X2
- Front Travel
- 180mm
- Headset
- Cane Creek 50 ZS56/ZS56
- Shifters
- SRAM Eagle 90 Transmission
- Rear Derailleur
- SRAM Eagle 90 Transmission
- Computer
- Kiox 400c
- Drive System
- Bosch Performance Line CX Generation 5
- Battery Type
- integrated Bosch PowerTube
- Battery Energy
- 600Wh (PowerMore 250Wh compatible; 850Wh total)
- Max Torque
- 100Nm
- Crankset
- Raceface Affect R
- Chainring Sizes
- 34t
- Crank Arm Length
- 160mm
- Cassette
- SRAM XS 1275 Transmission T-Type
- Cassette Range
- 10-52t
- Chain
- SRAM GX Eagle Transmission T-Type
- Brakeset
- SRAM Maven Silver
- Brake Type
- hydraulic disc
- Rotors
- SRAM Centerline (220mm)
- Handlebar
- Blackbird 35 (aluminum)
- Handlebar Width
- 800mm
- Grips
- Lizard Skins Strata Single Clamp
- Stem
- [small - medium] Blackbird 35, [x-medium - x-large] Blackbird 50
- Stem Length
- [small - medium] 35mm, [x-medium - x-large] 50mm
- Saddle
- WTB Solano Fusion CrMo
- Seatpost
- KS Vantage Dropper
- Wheelset
- Blackbird Send Alloy
- Hubs
- Blackbird 32H 6-Bolt
- Front Axle
- 15 x 110mm
- Rear Axle
- 12 x 148mm
- Tires
- [front] Maxxis Assegai DD MaxxGrip, [rear] Maxxis DHR II DD MaxxTerra
- Tire Size
- [front] 29 x 2.5in, [rear](small - x-medium) 27.5 x 2.5in, (large - x-large) 29 x 2.5in
- Activity
- enduro
- Manufacturer Warranty
- [bikes, wheels, rims] lifetime
One Frame, Three Trail Modes
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Find Your Model
OSO HD
Shuttle laps and big mountain descents
180mm front / 165mm rear travel
Gravity geometry gets riders to the top faster for another run down
OSO Trail
All-day missions and backcountry access
160mm front / 150mm rear travel
Efficient enough for long climbs, capable enough for technical descents
OSO Sport
Local trails and fast flowing singletrack
140mm front / 160mm rear travel
Less travel makes the bike more responsive and agile on tighter terrain
Inside The Oso
Quiet Motor, Real Torque
The Bosch Performance Line CX Gen 5 runs quiet on the trail. It delivers high torque with natural-feeling pedal assist that responds to input rather than fighting it
All-Day Battery, More If You Need It
The internal 600Wh battery sits low in the frame, improving balance and handling. Add the optional PowerMore 250Wh extender to reach 850Wh total for longer routes
Built To Change With Your Riding
Swap the shock and fork to convert between HD, Trail and Sport travel. Bolt-on dropouts let riders fine-tune chainstay length and switch between 29" and 27.5" rear wheels
Five Sizes, All Dialed
Every frame size gets its own geometry, so the bike fits and handles correctly for your height. A new Extra Medium sits between Medium and Large, covering the height range where 80% of Ibis riders land
Full Suspension, No Compromise
dw-link suspension manages pedaling, braking and trail input independently, so the bike stays efficient on climbs and controlled on descents
Shop The Oso Lineup
Ibis
Oso HD Eagle 90 Ebike
1 color
Ibis
Oso HD Ebike Frame
1 color
Ibis
Oso Sport Eagle 90 Ebike
1 color
Ibis
Oso Trail Eagle 90 Ebike
2 colors
Ibis
Oso Trail Ebike Frame
2 colors
Ibis
Oso Trail GX Transmission Ebike
2 colors
Built To Fly
Ibis Cycles started in 1981 when founder Scot Nicol opened a tiny workshop near Mendocino, California, with no big plan beyond building mountain bikes that were fun to ride and tough enough for the rough stuff. Today, from its home base in Santa Cruz, Ibis remains a small, rider-owned company focused on doing a few things really well: designing carbon and aluminum mountain bikes that climb efficiently, descend playfully, and feel lively every time you point them down the trail. With long-time owners and in-house engineering still deeply involved in the day-to-day, the brand stands for bikes that are light, durable, and above all, a blast to ride—whether you are racing, lapping local trails, or just chasing that next perfect corner.