Oso S
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Free shipping, assembly, and tubeless setup.
Add your weight at checkout and we'll dial in your suspension before it ships.
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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.
Spec Sheet:
Fork
RockShox Pike Base, 140mm, 29"
Shock
RockShox Deluxe Select+, 210mm x 52.5mm
Motor
Bosch Performance Line CX, Generation 5
Wheels
Blackbird Send Alloy Rims, 32H, Blackbird Hubs
Front: Send I, 29"
Rear: Send II, 29"
Front Tire
Maxxis Assegai, 29 x 2.5 EXO
Rear Tire
Maxxis DHR II, 29 x 2.5 EXO+
Brakes
SRAM Maven Base
Rotors (F/R)
SRAM Centerline 6-Bolt 220F / 220R
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
XM–XL: 180–210mm
Saddle
WTB Silverado Fusion CrMo 142
Additional Info
Bikes ship for free in the continental US, come fully assembled, set up tubeless, with suspension set to rider weight at no charge.