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.
GX AXS
COMPONENT |
STANDARD COMPONENT |
UPGRADE / OPTION |
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 (F/R) |
Front: Maxxis Assegai, 29x2.5", 3C Maxxgrip, Double Down, TR, WT; Rear: Maxxis Aggressor, 29x2.5", 3C Maxxgrip, Double Down, TR, WT Size SM–MD comes with a 27.5x2.5" rear tire. |
|
Brakes |
Shimano XT M8120, 4 piston |
|
Rotors (F/R) |
Shimano SM-RT66, 220mm |
|
Crankset |
SRAM X1 E-MTB, 34t Steel Ring |
|
Rear Derailleur |
SRAM GX Eagle Transmission AXS |
|
Shifter |
Eagle AXS Controller |
|
Cassette |
SRAM XS-1275 10-52 Transmission |
|
Chain |
SRAM GX Eagle Transmission |
|
Chain Guide |
Ibis Top Guide |
|
Headset |
Cane Creek 40 ZS44/ZS56 |
|
Grips |
Lizard Skin Charger |
|
Handlebar |
Blackbird Carbon Hi Fi, 800mm |
|
Stem |
Ibis 31.8mm S/M: 40mm, L/XL: 50mm |
|
Seatpost |
Bike Yoke Revive Dropper S: 125mm, M: 160mm, L: 185mm, XL/XXL: 213mm. Note there is a 250lb rider weight limit on this post. |
|
Saddle |
SDG Bel-Air, V3 |
|
Images may not show actual build kit content. Pricing and specifications subject to change without notice. All prices are ex‐works Santa Cruz, CA. MSRP prices are US suggested retail prices and are exclusive of sales tax or VAT.