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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.
GX Build
| Fork | Fox Performance Series, Float 38, 170mm, 44mm offset, 29″, 110x15mm |
| Shock | Fox Performance Elite Series, X2, 205x60mm |
| Motor | Bosch Performance Line CX |
| Wheels | Blackbird Send I/ Send II, Aluminium, Ibis Hubs, SM-MD: F – 29”/R – 27.5”, LG-XL: F/R – 29” |
| Tires | Front: Maxxis Assegai, 29×2.5″, 3C Maxxgrip, Double Down, TR, WT; Rear: Maxxis Aggressor, 29×2.5″, 3C Maxxgrip, Double Down, TR, WTSize SM–MD comes with a 27.5×2.5″ rear tire. |
| Brakes | Shimano XT M8120, 4 piston |
| Brake Rotors | Shimano SM-RT66, 220mm |
| Cranks | SRAM EX1 E-Crank, 32T ring, Ibis spider |
| Rear Derailleur | SRAM GX Eagle |
| Shift Levers | SRAM GX Eagle |
| Cassette | SRAM GX, XG 1275, 10-52 |
| Chain | SRAM GX Eagle |
| Chain Guide | Ibis Top Guide |
| Headset | Cane Creek 40 ZS44/ZS56 |
| Grips | Lizard Skin Charger Evo |
| Handlebar | Ibis Carbon Hi Fi, 31.8mm, 800mm |
| Stem | Ibis 31.8mmS/M: 40mm, L/XL: 50mm |
| Seatpost | Bike Yoke Revive DropperS: 125mm, M: 160mm, L: 185mm, XL: 213mm. Note there is a 250lb rider weight limit on this post. |
| Saddle | SDG Bel-Air, V3 |
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 were inspired by our race-winning Ripmo. 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.
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