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Orbea
Onna
Order through Rad Bikes in Bozeman. Contact us for pricing, order timing, and help with your build.
- Rear travelRear travel
- Hardtail
- Fork travelFork travel
- 100 mm
- Wheels
- 27.5″ / 29″ (size-dependent)
- Frame
- Aluminum
An aluminum hardtail mountain bike with wheel sizes matched to frame size and several component choices.
Manufacturer photography. Components shown may vary by build.
Build and paint options are from Orbea’s current regional listing. Please confirm US build availability with Rad Bikes.
Build specs
Onna 50 · Size LG
Frame & suspension
- Fork
- SR Suntour XCE 28 Coil 100mm QR
- Frame
- Orbea Onna Alloy, Dropout 9x135, BSA BB, Internal cable routing
- Fork travel
- 100 mm
- Rear travel
- Hardtail
Drivetrain
- Crankset
- Forged alloy, 22x36t, 7/8S
- Shifters
- Microshift TS38
- Cassette
- Sun Race CSM66 11-34t 8-Speed
- Rear derailleur
- Shimano Tourney TX800
- Front derailleur
- Shimano M315 31.8mm
- Chain
- KMC X8
Wheels & brakes
- Wheel / frame sizes
- 27.5″: XS, S. 29″: S, M, L, XL.
- Brakes
- Shimano MT200 Hydraulic Disc
- Wheels
- WH 2.1, Alloy, 27,5", 32H
- Tyres
- Kenda K1153 2.35" 22TPI
- Wheel size
- 27.5″ / 29″ (size-dependent)
Cockpit & contact points
- Headset
- 1"-1/2 Semi-Integrated
- Handlebar
- Alloy, 31.8 mm, Flat, 740 mm, 9° sweep
- Stem
- Alloy, 7º
- Seatpost
- SP 0.6, Alloy, 27.2mm, Setback 0
- Saddle
- Essax Adv soft135mm for Orbea
- Pedals
- VP-537 Black
Other components
- Geometry reference
- onna 50. Manufacturer reference configuration; other frame, wheel, fork and chainstay options may change measurements.
Geometry
Size LG
Size LG geometry
- Seat Tube (C-T) (29" wheels)
- 470 mm
- Top Tube (EFF) (29" wheels)
- 614 mm
- Head Tube (29" wheels)
- 105 mm
- Chainstay (29" wheels)
- 440 mm
- BB Drop (29" wheels)
- 64 mm
- BB Height (29" wheels)
- 309 mm
- Wheelbase (29" wheels)
- 1146 mm
- Head Angle (29" wheels)
- 68.5°
- Seat Angle (29" wheels)
- 74.5°
- RAKE (29" wheels)
- 46 mm
- Standover (29" wheels)
- 770 mm
- Reach (29" wheels)
- 440 mm
- Stack (29" wheels)
- 627 mm
- Fork Length (29" wheels)
- 517.9 mm
Manufacturer information checked 10/19/2026. Specs may vary by build and model year.
Order through Rad Bikes in Bozeman. Contact the shop to confirm pricing and order timing.