Orbea Onna 29 40 Mountain Bike 2026 - Hardtail MTB
Comfortable geometry and dependable trail-ready components make the Orbea Onna 29 40 a solid choice for riders getting into mountain biking. Its lightweight alloy frame, 100mm suspension fork and wide 29in tyres help deliver stable and predictable handling off-road.
Key Features:
- Orbea Onna alloy frame with internal routing and balanced MTB geometry
- SR Suntour XCT 30 Coil fork with 100mm travel
- Shimano Cues 1x9 drivetrain with wide-range 11-46t cassette
- Shimano MT200 hydraulic disc brakes for dependable stopping control
- 29in alloy wheels with Kenda Booster 2.4in trail tyres
- Tapered head tube improves steering precision and upgrade potential
- Available with 0% APR finance
The Orbea Onna 29 40 is designed to help newer riders feel comfortable and confident as their off-road riding develops. Its balanced geometry offers reassuring handling on trails and towpaths alike, while the lightweight alloy frame keeps the bike responsive and easy to manage on climbs and tighter sections.
A 100mm SR Suntour suspension fork helps absorb trail chatter and uneven terrain, improving comfort and control on rougher surfaces. The large-volume Kenda Booster 2.4in tyres add extra grip and stability, helping the bike feel planted through corners and loose ground while the 29in wheels roll smoothly over obstacles.
The Shimano Cues 1x9 drivetrain keeps shifting straightforward and reliable, with a wide-range cassette that gives plenty of climbing gears for steeper trails and longer rides. Shimano MT200 hydraulic disc brakes provide controlled braking performance in all weather conditions, helping build confidence on descents and technical sections.
Orbea has also included practical details that add long-term versatility, including internal cable routing for a cleaner finish and a tapered head tube for improved front-end stiffness and future upgrade options. Whether you are starting out on local trails, building fitness or exploring woodland routes at the weekend, the Onna 29 40 offers a capable and approachable ride.
Occasionally, without notice, manufacturers change product design and/or specifications.
| Frame | Orbea Onna Alloy, Dropout 9x135, BSA BB, Internal cable routing |
| Fork | SR Suntour XCT 30 Coil 100mm QR |
| Headset | 1"-1/2 Semi-Integrated |
| Stem | Alloy, 7º |
| Bars | Alloy, 31.8mm, Flat, 740mm, Sweep 9 |
| Front Brake | Shimano MT200 Hydraulic Disc |
| Rear Brake | Shimano MT200 Hydraulic Disc |
| Rear Mech | Shimano Cues U4000 GS Shadow |
| Shifters | Shimano Cues SL-U4000 |
| Speed | 9 |
| Rims | WH 2.1, Alloy, 29", 32H |
| Front Tyre | Kenda Booster 2.40" 30TPI |
| Rear Tyre | Kenda Booster 2.40" 30TPI |
| Seat Post | SP 0.6, Alloy, 27.2mm, Setback 0 |
| Saddle | Fortune QF-3091 |
| Chainset | Forged alloy, 32t |
| Chain | KMC eGlide |
| Cassette | Sun Race 11-46t 9-Speed |
| Pedals | VP-537 Black |
Mountain Bike Size Chart
|
Height
|
Bike Size
|
Mountain Bike Size
|
|
4’8” – 5’1”
143 – 155 cm
|
XXS
|
13” (33 cm)
|
|
5’1” – 5’4”
155 – 163 cm
|
XS
|
15” (38 cm)
|
|
5’4” – 5’7”
163 – 170 cm
|
S
|
16” (41 cm)
|
|
5’7” – 5’10”
170 – 178 cm
|
M
|
18” (46cm)
|
|
5’10” – 6’0”
178 – 183 cm
|
L
|
19” (48cm)
|
|
6’0” – 6’3”
183 – 191 cm
|
XL
|
20” (51 cm)
|
|
6’3” – 6’5”
191 – 196 cm
|
XXL
|
21” (53 cm)
|
|
6’5” – 6’9”
196 – 205 cm
|
XXXL
|
22” (56 cm)
|
* Mountain bikes are sized differently to road bikes. Typically, they are sized in inches as the first MTBs were produced in the USA. European brands like Lapierre and Haibike like to use centimetres for all their bikes. The measurements of their mountain bikes doesn’t match their road bikes but are like a simple conversion from the inches measurement. This is why we have included cm measurements in brackets for the Mountain bike column.
Read our bike size guide for more information on sizing.
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Orbea Onna 29 40 Mountain Bike 2026 - Hardtail MTB
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