Agile, responsive, and playful - driven by the Bosch CX Gen 5 motor, the Oso S is made for tight terrain and flowing singletrack. It’s intuitive handling turns every ride into a fast, fun session on your favorite local trails.
| Fork | RockShox Pike, Base, 140mm, 29” | |
| Shock | RockShox Deluxe Select+, 210x52.5mm | |
| Motor | Bosch Performance Line CX, Generation 5 | |
| Wheels | Blackbird Send Alloy, 32H, Blackbird Hubs
F: Send I, 29 / R: Send II, 29 |
|
| Front Tire | Maxxis Assegai 29x2.5 EXO | |
| Rear Tire | Maxxis DHR2 29x2.5 EXO+ | |
| Brakes | SRAM Maven Base | |
| Rotors (F/R) | SRAM Centerline 220mm, 6-Bolt | |
| Crankset | SRAM EX1, 160mm, 34T Steel Ring | |
| Rear Derailleur | SRAM Eagle 90 Transmission | |
| Shifter | SRAM Eagle 90 Transmission | |
| Cassette | SRAM XS 1275 Transmission, T-Type, 10-52T | |
| Chain | SRAM GX Eagle Transmission, T-Type | |
| Chain Guide | MRP TR2 Top Guide | |
| Headset | Cane Creek 50, ZS56/ZS56 | |
| Grips | Lizard Skins Strata Single Clamp | |
| Handlebar | Blackbird 35 Aluminum Riser Bar 800mm | |
| Stem | Blackbird 35 Stem
SM-MD: 35mm, XM-XL: 50mm |
|
| Seatpost | KS Vantage Dropper, 34.9mm
SM–MD: 140–170mm |
|
| Saddle | WTB Silverado Fusion CrMo 142 |
63.9-64.4°Head Tube Angle I 77.7-78.9°Seat Tube Angle I 456–457mmChainstays
| Nominal Size | SM | MD | XM | LG | XL | |
|---|---|---|---|---|---|---|
| Wheel Size | 29 | 29 | 29 | 29 | 29 | |
| Seat Tube | A | 381 | 381 | 405 | 432 | 450 |
| Top Tube | B | 579 | 604 | 624 | 646 | 665 |
| Head Tube | C | 99 | 109 | 121 | 136 | 152 |
| Chainstay | D | 456 | 456 | 457 | 457 | 457 |
| Seat Tube Angle | E | 77.7° | 77.7° | 77.9° | 78.4° | 78.9° |
| Saddle Height for Seat Tube Angle | F | 650 | 700 | 745 | 790 | 830 |
| Head Tube Angle | G | 63.9° | 64.7° | 64.4° | 64.4° | 64.4° |
| Wheelbase | H | 1227 | 1246 | 1276 | 1307 | 1338 |
| Stack | I | 614 | 625 | 634 | 644 | 656 |
| Reach | J | 445 | 467 | 489 | 513 | 536 |
| BB Drop | K | 44 | 41 | 41 | 38 | 35 |
| BB Height | 329 | 332 | 332 | 335 | 338 | |
| Standover | L | 684 | 697 | 722 | 733 | 750 |
| Dropper Post Length | 140–170 | 140–170 | 180–210 | 180–210 | 180–210 | |
| Crank Length | 160 | 160 | 160 | 160 | 160 | |
| Water Bottle Size | 22oz | 22oz | 26oz | 26oz | 26oz |
| SM | 152 - 168CM |
| MD | 165 - 175CM |
| XM | 173 - 183CM |
| LG | 180 - 191CM |
| XL | 188 - 201CM |
