Oso TR 2025

The Ibis Oso TR 2025 is the trail-oriented variant of Ibis's modular Oso platform, a carbon all-mountain eMTB built around the latest Bosch Performance Line CX Gen 5 drive unit and a 600 Wh internal battery. Headline numbers: 160 mm fork, 150 mm rear travel, Bosch CX Gen 5 at 120 Nm and 750 W peak (post-PU2.0 OTA), a 600 Wh battery (extendable to 850 Wh with the Bosch Powermore 250 range extender), 22.77 kg from size XM with frame protection and sealant, and a 63.2 to 64.0 degree adjustable head angle. The market verdict on the relaunched Oso family is that Ibis has built one of the cleanest do-everything eMTB platforms on the market with a "lifetime warranty on frame and bushings", aimed at riders who want the proven Bosch ecosystem in a Ripmo-feeling chassis.

Drive system and range. The Bosch CX Gen 5 in its current post-PU2.0 firmware delivers 120 Nm of torque and 750 W peak with sharper response, full hill-hold and the Bosch Flow App ecosystem. The 600 Wh internal battery is deliberately smaller than the 750/800 Wh fitted to many rivals, with Ibis arguing this saves roughly 1 kg on bike weight and lowers the centre of mass. The Powermore 250 Wh range extender bottle pushes total capacity to 850 Wh for big days. Real-world range on the 600 Wh internal in a 22.77 kg trail bike with the latest motor is comfortably 25 to 35 miles depending on assist mode and elevation gain.

Geometry and handling. Ibis offers five sizes (S, M, XM, L, XL) and the geometry is unusually progressive. The S sits at a slacker 63.2 degree head angle with a 438 mm reach and a short 440 mm chainstay, while sizes M through XL run a slightly steeper 64.0 degree head angle with 440 (M) or 455 mm (XM/L/XL) chainstays and reach progressing 460, 484, 508 and 532 mm. The XL at 532 mm reach and 1346 mm wheelbase is genuinely long, catering for tall riders properly. Size-specific chainstays mean the longer-reach frames carry proportionally longer rear-centres for balanced handling.

Build and value. The base trim listed in current gold is the platform price point. The full Oso TR build sheet pairs the Bosch CX Gen 5 with carbon frame, internal 600 Wh battery, and Ibis's clean cable management. Standout is the platform's modularity: the same carbon frame supports three configurations (TR for 150 mm, AM for 160 mm, and the longer-travel enduro variant), so buyers can choose the travel that suits their riding without a different chassis. Questionable point at retail is the 600 Wh battery in a class where 750 to 800 Wh is increasingly the norm, plus Ibis's premium price positioning.

Verdict. The Oso TR is in current production and shipping from May 2026, backed by a lifetime warranty on the carbon frame and bushings. No curated emtbforums.com community quotes for this exact model/year are on file yet (the second-generation Oso platform is new), so the assessment leans on the gold spec sheet and the press coverage of the relaunched platform. Buy it if you want the proven Bosch CX Gen 5 motor and ecosystem in a Ripmo-derived chassis, with size-specific geometry that scales properly to XL, the option to range-extend to 850 Wh with the Powermore bottle, and a lifetime frame warranty that very few competitors match. Look elsewhere if you want a sub-21 kg DJI Avinox lightweight, an 800 Wh battery as standard rather than as a range extender, or a sub-£5k price tag. The decision to fit a 600 Wh internal pack rather than the bigger Bosch PowerTube 800 is a genuine handling choice, prioritising sharper, lighter feel over outright capacity, and matches Ibis's design philosophy of analogue-bike-first ride quality. As of mid-2026 the Oso TR sits squarely in the do-everything trail eMTB conversation alongside the Specialized Levo, Trek Rail and Yeti 160E, with the Ibis differentiating itself on warranty, modular travel options and that distinctive Ripmo lineage.