Ibis Oso Sport 90 2026

Ibis Oso Sport Built for fast trail rides, flowing singletrack, and quick after-work laps, the Oso S combines a Bosch Performance Line CX Gen 5 motor, 130mm rear travel, a 140mm fork, 29” wheels, and responsive trail geometry. Designed for riders who want a lighter-feeling, more playful e-MTB, it delivers quick handling, efficient climbing, and plenty of confidence for everyday trail riding. Key highlights 140mm front / 130mm rear travel built for fast trail rides, flowing singletrack, and technical climbs. dw-link suspension with V5 kinematics for traction, support, and efficient pedaling. 29” wheels across all sizes for roll speed, stability, and confident trail handling. SRAM Eagle 90 Transmission designed for durability and shifting under load. Design and durability Carbon frame with 130mm rear travel and Bosch CX Gen 5 drive system. Modular chassis allows wheel size, chainstay length, and travel configuration changes. Size-specific geometry, chainstay lengths, bottom bracket heights, and suspension kinematics. Lifetime frame warranty and lifetime bushing warranty. Ride characteristics Quick, responsive trail feel for riders who want an e-MTB that stays lively. Powerful Bosch assist helps make climbs, repeat laps, and longer routes more manageable. Stable enough for rougher trails while staying more agile than a longer-travel e-MTB. Size-specific design helps maintain consistent handling across the full size range. What makes the Oso S different Bosch Gen 5 power: The Performance Line CX motor delivers quiet, natural-feeling assist with up to 120Nm of torque and a 600% support multiplier. 600Wh battery: Internal battery keeps weight lower and centered, with optional PowerMore 250Wh range extender compatibility for up to 850Wh total capacity. Fast trail handling: The 140mm front / 130mm rear travel package gives the Oso S a quicker, more playful feel than the longer-travel Oso models. Modular dropout system: Bolt-on dropouts and brake mounts allow chainstay length and wheel size configuration changes. Fit, setup, and recommended upgrades We want every rider to get the most out of their new Oso S. Local pickup customers: We can help dial in suspension sag, rebound, Bosch system setup, and cockpit position before your first ride. Shipped bikes: Bikes arrive professionally assembled and test ridden. Our staff can assist with setup questions if needed. Recommended upgrades: Pedals, tire inserts, frame protection, range extender, and brake pad options depending on terrain and riding style. Ibis Oso S – Full specifications Frame Frame Carbon fiber, 130mm rear travel, dw-link suspension, Bosch CX Gen 5 compatible Suspension Fork RockShox Pike Base, 140mm, 29” Rear shock RockShox Deluxe Select+, 210x52.5mm Motor & battery Motor Bosch Performance Line CX, Generation 5 Battery 600Wh internal battery, PowerMore 250Wh range extender compatible Display Bosch Kiox 400c Wheels & tires Rims Blackbird Send Alloy, Send I front / Send II rear Front hub Blackbird Hub Rear hub Blackbird Hub Tires Maxxis Assegai 29x2.5 EXO front / Maxxis DHR II 29x2.5 EXO+ rear Drivetrain Shifter SRAM Eagle 90 Transmission Rear derailleur SRAM Eagle 90 Transmission Crankset SRAM EX1, 160mm, 34T steel ring Cassette SRAM XS 1275 Transmission T-Type, 10-52T Chain SRAM GX Eagle Transmission T-Type Brakes Brakes SRAM Maven Base Rotors SRAM Centerline 220mm front / rear, 6-bolt Cockpit Handlebar Blackbird 35 Aluminum Riser Bar, 800mm Stem Blackbird 35 Stem, size-specific length Seatpost KS Vantage Dropper, 34.9mm, size-specific travel Saddle WTB Silverado Fusion CrMo 142 Sizing and fit Height ranges are based on Ibis’ recommended sizing chart. Frame size Recommended height Small 5’0” – 5’6” Medium 5’5” – 5’9” Extra-Medium 5’8” – 6’0” Large 5’11” – 6’3” X-Large 6’2” – 6’7” Frame geometry (mm and degrees) Tap to open chart Size SM MD XM LG XL Wheel size 29” 29” 29” 29” 29” Travel (front/rear) 140 / 130 Reach 445 467 489 513 536 Stack 614 625 634 644 656 Head tube angle 63.9° 64.7° 64.4° 64.4° 64.4° Seat tube length 381 381 405 432 450 Seat tube angle 77.7° 77.7° 77.9° 78.4° 78.9° Chainstay 456 456 457 457 457 Wheelbase 1227 1246 1276 1307 1338 BB height 329 332 332 335 338 Standover 684 697 722 733 750 Recommended dropper 140–170 140–170 180–210 180–210 180–210 Water bottle 22oz 22oz 26oz 26oz 26oz Component note: We reserve the right to make changes to product and component information at any time without notice, including equipment, specifications, models, colors, and materials.