Meet the Oso TR — your do-it-all trail companion.
Powered by the Bosch CX Gen 5 motor, you get efficient pedal assist for all-day rides with the power and responsiveness you want on descents. Whether you're squeezing in quick after-work laps or heading deep into the backcountry, this bike is built to handle it all with confidence and balance.

Modular Chassis

Customize your ride your way. You can swap the shock, clevis, and fork to run any of the three travel options. The frame is compatible with both 29” and 27.5” wheels, and you can fine-tune your setup further with adjustable chainstay lengths.

Modular Dropout System

Dial in your perfect setup with bolt-on dropouts and brake mounts that let you adjust chainstay length and wheel configuration.

• 27.5” rear wheel: Comes with a 440mm dropout on SM/MD sizes
  Optional 440mm and 455mm dropouts available aftermarket
• 29” rear wheel: Comes with a 455mm dropout on XM/LG/XL sizes
  Optional 455mm and 465mm dropouts available aftermarket

Bosch Performance Line CX (Gen 5) Motor

Experience smooth, quiet, and powerful pedal assist with natural-feeling torque delivery that shines on technical terrain. You also benefit from Bosch’s trusted service network for peace of mind.

Integrated Bosch System

• Includes a Bosch water bottle cage and PowerMore range extender mount
• Kiox 400c display comes standard, giving you a clean interface and detailed ride metrics

Battery & Range

Ride farther with a 600Wh internal battery, with the option to add a 250Wh PowerMore range extender (sold separately) for up to 850Wh total capacity.

• Low, centered battery placement improves handling
• 600Wh keeps weight down while covering most rides
• Add the range extender for longer adventures and full-day missions
• Smart charge port placement keeps setup clean and simple

Long Dropper Post Compatibility

The uninterrupted seat tube design lets you run longer dropper posts across all frame sizes, so you get maximum clearance and control on descents.

Size-Specific Design

Every frame size (SM–XL) is tuned individually, so you get consistent handling and ride feel no matter your size. Geometry, chainstay length, bottom bracket height, and suspension kinematics are all optimized for you.

Expanded Size Range

With five sizes available, you can find your perfect fit more easily than ever. The added Extra-Medium size is designed to better serve riders in the most common height range.

DW-Link Suspension

Enjoy efficient climbing and excellent traction thanks to the proven dw-link suspension platform, designed by Dave Weagle.

Tire Clearance

Run up to 2.5” tires for added grip and confidence on any terrain.

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