Ibis OSO
Ibis OSO
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A whole new sport demands a whole new bike. Built from the ground up to deliver a new level of smooth, fast, and durable performance, the full-carbon-fiber Oso features our first-ever upper-link suspension dw-link platform. It stacks 155mm of rear travel with 170mm up front and is powered by a Bosch Performance line CX motor.
The Oso doesn’t just lean into enduro territory. It drops in, elbows out and goggles down. The long wheelbase, roomy cockpit and slack 64-degree head angle are designed for optimal racing performance. And its size-specific seat angles allow riders of any height to bang out climbs in comfort without wasting a watt.
Large and extra large Oso frames are built around matching 29-inch wheels, while small and medium frames get the mixed-wheel treatment and shorter chainstays. That keeps the Oso from ever feeling unwieldy. In fact, it’s pretty damn wieldy.
The Bosch Performance line CX has a quiet, powerful 85 NM drive unit, which offers the most natural-feeling acceleration since the invention of gravity. On top of that, you get Bosch’s two-year warranty, a network of 2,400 dealers across the U.S., UL safety-certified batteries, and its carbon-neutral operations. So, in case you were wondering, that’s why we went with Bosch.
With a deep 750wh battery on sizes medium thru XL and a 625wh battery on the small, the Oso is built to go big and still have enough juice left to go home.
It may look a little different, but the Oso’s Upper Link suspension is still dw-link. That means it packs all the traction and efficiency you’d expect from an Ibis, but with a more supportive leverage curve to keep up with all the demands of a full-powered e‑bike.
If it’s our fault, we’ll fix it. Simple as that.
PICK YOUR SIZE
The Oso doesn’t just lean into enduro territory. It drops in, elbows out and goggles down. Large and extra large Oso frames are built around matching 29-inch wheels, while small and medium frames get the mixed-wheel treatment and shorter chainstays.
170MM FORK (584MM AXLE TO CROWN)
| NOMINAL SIZE | SMALL | MEDIUM | LARGE | X-LARGE | |
|---|---|---|---|---|---|
| Seat Tube Length | A | 394 | 415 | 415 | 427 |
| Top Tube Length | B | 573 | 607 | 638 | 669 |
| Head Tube Length (4mm stack of lower cup not included) | C | 90 | 106 | 122 | 139 |
| Chainstay Length | D | 439 | 439 | 444 | 444 |
| Seat Tube Angle | E | 77° | 77° | 78° | 79° |
| Head Tube Angle | G | 64° | 64° | 64° | 64° |
| Wheelbase | H | 1206 | 1242 | 1294 | 1341 |
| BB (L/XL with Maxxis Minion 29x2.5WT tires, S/M with 27.5x2.5WT rear tire). | 341 | 341 | 340 | 340 | |
| BB Drop | K | 31 | 31 | 31 | 31 |
| Stack | I | 621 | 635 | 650 | 665 |
| Reach | J | 430 | 460 | 500 | 540 |
| Saddle Height | F | 655 | 705 | 765 | 820 |
| Standover | 677 | 714 | 729 | 731 | |
| Trail | 132 | 132 | 132 | 132 |
L/XL comes with Maxxis Minion 29x2.5WT tires, S/M comes with a Maxxis Minion 29x2.5WT front tire and a 27.5x2.5WT rear tire.
SIZING GUIDE (RIDER HEIGHT)
| Version | V1 |
| Frame Material | Carbon Fiber |
| Wheel Size | 29” up to 2.5" tires on L/XL, 27.5" up to 2.6" on S/M |
| Front Travel | 170mm forks (Max 190mm) |
| Rear Travel | 155mm |
| Boost Axles | 148mm rear / 110mm front |
| Seatpost Diameter | 31.6mm |
| Rear Brake | 203mm post mount / 220mm max |
| Chainstay Length | S/M 439mm, L/XL 444mm |
| Bottom Bracket | NA |
| Chainline | 55mm chainline, 182mm Q Factor |
| Chainguide | Compatible with Bosch Smart System Chain Guides (M/L/XL), Gen 4 (S) |
| Headset | ZS44 upper / ZS56 lower |
| Colors | Forrest Service Green or Storm Blue |
| Sizes | S / M / L / XL |
| Frame Warranty | Lifetime |
| Electronics Warranty | 2 Years |
| Motor | Bosch Performance Line CX |
| Battery | Bosch 750 Wh Powertube (M/L/XL), 625 Wh Powertube (S) |
| Charger | Bosch Smart System Charger |
| Display | Bosch Kiox 300 |
