Ibis Oso HD Frameset 2026Downhill Both Ways. The Ibis Oso HD Frameset is the gravity-focused foundation of the Oso platform, ready to build up for shuttle laps and big mountain lines. With 165mm of rear travel and geometry tuned for fast, technical descents, it's the most capable personality in the Oso lineup. Bolt-on dropouts let you configure chainstay length and wheel size to match your terrain, with all dropout options available aftermarket. The frame ships with a Fox Factory Float X2 rear shock and is optimized for a 180mm fork. With a Bosch Performance Line CX Gen 5 motor that boasts a low and centered 600Wh battery position and compatibility with a clean Power More integration for up to 850Wh total when the day demands it. Features Modular dropout system with bolt-on dropouts to fine-tune chainstay length and wheel size configuration - all options available aftermarket Bosch Performance Line CX Gen 5 motor with low and centered battery placement for improved balance and handling, and clean Power More integration for up to 850Wh total capacity Fox Factory Float X2 rear shock included230x65mm, optimized for 165mm of rear travel Optimized for a 180mm fork (597. 5mm axle to crown) with gravity-focused geometry built for fast, technical terrain Long dropper post compatibility with generous seat tube insertion depths across all sizes (SM-MD: 140-170mm / XM-XL: 180-210mm)Internal cable routing for a clean build, with Bosch motor and battery integration designed into the frame SPECIFICATIONSFrame Material Carbon Rear Travel165mm Fork Compatibility Optimized for 180mm (597. 5mm Axle to Crown)Rear Shock Fox Factory Float X2, 230x65mm Motor Bosch Performance Line CX, Generation 5Battery Bosch Power Tube 600Wh (Power More 250Wh compatible, 850Wh total)Bottom Bracket73mm BSA Threaded Seatpost Diameter34. 9mm Rear Axle148x12mm Thru-Axle (Boost)Headset Not Included (ZS56/ZS56)Intended Use Enduro, E-MTBNote: Components are subject to change without notice. METRICINCHIbis Oso HD (180mm Fork)Size SMMDXMLGXLA: Seat Tube Length381381405432450B: Top Tube Length583608628648668C: Stack626637646656668D: Reach428450474498522E: BB Height346349352355358F: BB Drop2724211815G: Head Tube Length99109121136152H: Head Tube Angle62. 3 deg63. 1 deg63. 1 deg63. 2 deg64 degI: Seat Tube Angle76. 1 deg76. 6 deg77. 1 deg77. 6 deg77. 6 degJ: Standover706717745755771K: Chainstay Length440440455455455L: Wheelbase12331251129513251357Suggested Rider Height Frame Size SMMDXMLGXLDropper Post Length140-170 mm140-170 mm180-210 mm180-210 mm180-210 mm Ibis Oso HD (180mm Fork)Size SMMDXMLGXLA: Seat Tube Length15. 015. 015. 917. 017. 7B: Top Tube Length22. 923. 924. 725. 526. 3C: Stack24. 625. 125. 425. 826. 3D: Reach16. 917. 718. 719. 620. 6E: BB Height13. 613. 713. 914. 014. 1F: BB Drop1. 10. 90. 80. 70. 6G: Head Tube Length3. 94. 34. 85. 46. 0H: Head Tube Angle62. 3 deg63. 1 deg63. 1 deg63. 2 deg64. 0 degI: Seat Tube Angle76. 1 deg76. 6 deg77. 1 deg77. 6 deg77. 6 degJ: Standover27. 828. 229. 329. 730. 4K: Chainstay Length17. 317. 317. 917. 917. 9L: Wheelbase48. 549. 351. 052. 253. 4 | Ibis Bicycles | Oso Hd Frameset 2026 | Gold | M