IbisOso S 90
- Motor
- Bosch Performance Line CX120 Nm
- Battery
- 600 WhInternal; PowerMore 250 Wh range extender compatible (850 Wh)
- Travel F / R
- 140 / 130 mm
- Wheels
- 29"
- Frame
- Carbon
- Weight
- 22.2 kgManufacturer figure for lightest complete build (size XM), incl. frame protection and tyre sealant
Overview
The Ibis Oso S 90 ($7,999) is the only build of the Oso S: Bosch Performance Line CX Gen 5 with 600 Wh, RockShox Pike Base fork, RockShox Deluxe Select+ shock, SRAM Eagle 90 Transmission and SRAM Maven Base brakes. Claimed weight for complete builds starts at 22.18 kg (size XM).
The Oso S is the shortest-travel member of Ibis' carbon Oso e-MTB platform: 140 mm fork, 130 mm dw-link rear travel, 29-inch wheels in all sizes and a 63.9–64.4° head angle, aimed at tighter, flowing singletrack.
Like its siblings it uses the Bosch Performance Line CX Gen 5 motor (up to 120 Nm), a 600 Wh internal battery compatible with the PowerMore 250 Wh range extender (850 Wh total) and a Kiox 400C display. Ibis quotes 22.18 kg for a complete size XM build, the lightest in the Oso range.
- 140 mm fork / 130 mm dw-link rear travel
- 29" wheels in all five sizes
- Bosch CX Gen 5, 600 Wh + optional PowerMore 250
- 22.18 kg claimed (size XM)
Gallery
Photos: Ibis
Full specifications
Frame & suspension
- Frame
- Carbon fiber, Oso V2 (Oso S), dw-link, 130 mm
- Fork
- RockShox Pike, Base, 140mm, 29”
- Rear shock
- RockShox Deluxe Select+, 210x52.5mm
E-system
- Motor
- Bosch Performance Line CX, Generation 5
- Battery
- Bosch 600 Wh internal; PowerMore 250 Wh range extender compatible (850 Wh total)
- Display
- Bosch Kiox 400C, top-tube mounted
- Charger
- Bosch Smart System Charger
Drivetrain
- Crankset
- SRAM (SM-MD: SRAM 90, 155mm, 34T Steel Ring XM-XL: SRAM X1, 165mm, 34T Steel Ring)
- Rear derailleur
- SRAM Eagle 90 Transmission
- Shifter
- SRAM Eagle 90 Transmission
- Cassette
- SRAM XS 1275 Transmission, T-Type, 10-52T
- Chain
- SRAM GX Eagle Transmission, T-Type
- Chain guide
- MRP TR2 Top Guide
Brakes
- Brakes
- SRAM Maven Base
- Rotors
- SRAM Centerline 220mm, 6-Bolt
Wheels & tyres
- Rims
- Blackbird Send Alloy, 32H, Blackbird Hubs (F: Send I, 29 / R: Send II, 29)
- Front tire
- Maxxis Assegai 29x2.5 EXO
- Rear tire
- Maxxis DHR2 29x2.5 EXO+
Cockpit
- Headset
- Cane Creek 50, ZS56/ZS56
- Grips
- Lizard Skins Strata Single Clamp
- Handlebar
- Blackbird 35 Aluminum Riser Bar 800mm
- Stem
- BLKBRD Stem (SM-MD: 35mm, XM-XL: 50mm)
- Seatpost
- KS Vantage Dropper, 34.9mm (SM–MD: 140–170mm; XM–XL: 180–210mm)
- Saddle
- WTB Silverado Fusion CrMo 142
Manufacturer specification — source. Specs and prices can change; check with the brand or your dealer.
Oso S geometry
| Size | SM | MD | XM | LG | XL |
|---|---|---|---|---|---|
| Wheel Size | 29" | 29" | 29" | 29" | 29" |
| ASeat Tube | 381 mm | 381 mm | 405 mm | 432 mm | 450 mm |
| BTop Tube | 579 mm | 604 mm | 624 mm | 646 mm | 665 mm |
| CHead Tube | 99 mm | 109 mm | 121 mm | 136 mm | 152 mm |
| DChainstay | 456 mm | 456 mm | 457 mm | 457 mm | 457 mm |
| ESeat Tube Angle | 77.7° | 77.7° | 77.9° | 78.4° | 78.9° |
| FSaddle Height for Seat Tube Angle | 650 mm | 700 mm | 745 mm | 790 mm | 830 mm |
| GHead Tube Angle | 63.9° | 64.7° | 64.4° | 64.4° | 64.4° |
| HWheelbase | 1227 mm | 1246 mm | 1276 mm | 1307 mm | 1338 mm |
| IStack | 614 mm | 625 mm | 634 mm | 644 mm | 656 mm |
| JReach | 445 mm | 467 mm | 489 mm | 513 mm | 536 mm |
| KBB Drop | 44 mm | 41 mm | 41 mm | 38 mm | 35 mm |
| BB Height | 329 mm | 332 mm | 332 mm | 335 mm | 338 mm |
| LStandover | 684 mm | 697 mm | 722 mm | 733 mm | 750 mm |
| Dropper Post Length | 140–170 mm | 140–170 mm | 180–210 mm | 180–210 mm | 180–210 mm |
| Crank Length | 155 mm | 155 mm | 165 mm | 165 mm | 165 mm |
| Water Bottle Size | 22oz | 22oz | 26oz | 26oz | 26oz |
Source: Ibis. Values with the stock fork; angle ranges/wheel sizes vary by size.
Oso S 90: FAQ
How much does the Ibis Oso S 90 cost?
$7,999 (US MSRP, excl. sales tax). Prices vary by country and dealer.
How much does the Ibis Oso S 90 weigh?
Ibis quotes 22.2 kg.
What motor and battery does the Ibis Oso S 90 have?
Bosch Performance Line CX (120 Nm). 600 Wh battery — internal; PowerMore 250 Wh range extender compatible (850 Wh).
How much suspension travel does the Ibis Oso S 90 have?
140 mm at the fork and 130 mm at the rear, on 29" wheels.
What sizes does the Ibis Oso S 90 come in?
SM, MD, XM, LG, XL. Check the geometry table to compare reach and stack between sizes.
