Orbea’s new radical-looking urban ebike, the Diem, showcases an all-new frame design incorporating the brand's patented Diamond Glide frame design.
The diamond-shaped rear triangle looks similar to Rondo’s new gravel bike, the Ruut V2 and Specialized’s Sirrus Carbon urban bike. However, this is the first time we’ve seen it on an electric bike.
Orbea claims its frame design will maintain the stiffness and solidity required for housing a mid-motor (Shimano’s EP8 or EP6, in this case), while providing "class-leading" bump compliance without the need for a suspension fork or seatpost.
Instead, the Diem is all about keeping things as simple and fuss-free as possible, according to Orbea.
Where most bikes of this ilk opt for an alloy (or, more rarely, steel) fork, Orbea specs a carbon example to absorb vibrations and reduce weight. The frame is made from hydroformed aluminium.
The deeply sloped hydroformed top tube is almost flat, and mirrored neatly by the forward-facing top section of the diamond-shaped rear triangle.
The Diem’s steering features a ‘Spin Block’, which prevents the bar from rotating fully. Orbea says this makes the bike more stable when propped on its kickstand.
The Diem’s frame shape was designed to keep much of the weight as low as possible, aiding stability, while the front end is relaxed to a 70-degree head angle to keep the steering smooth.
| | S | M | L | XL |
|---|---|---|---|---|
| Seat tube angle (degrees) | 74.7 | 74.3 | 74 | 73.7 |
| Head tube angle (degrees) | 69 | 69.5 | 70 | 70.5 |
| Chainstay (mm) | 435 | 435 | 435 | 435 |
| Seat tube (mm) | 442 | 468 | 490 | 540 |
| Top tube (mm) | 586 | 610 | 634 | 659 |
| Head tube (mm) | 164.1 | 187.4 | 210.6 | 233.7 |
| Fork offset (mm) | 50 | 50 | 50 | 50 |
| Bottom bracket height (mm) | 279 | 279 | 279 | 279 |
| Wheelbase (mm) | 1102 | 1121.6 | 1140.8 | 1159.5 |
| Standover (mm) | 672 | 686 | 700 | 713 |
| Stack (mm) | 601 | 625 | 649 | 673 |
| Reach (mm) | 422 | 438 | 454 | 470 |
Integration simplified
The Diem has a range of integrated accessories that are usually bolted-on aftermarket items.
The chainstay incorporates a custom kickstand, while lights are built into the head tube and seatpost. These are powered by the main battery.
A powerful Supernova Starstream headlight is integrated into the one-piece handlebar. An StVZO-compliant rear light, which doubles as a braking light, is part of the mudguard.
The whole lighting array is intelligent and switches on automatically as the light fades.
The Diem's sealed battery can only be removed through the bottom bracket to improve security. Hidden Apple AirTag ports are also integrated into the bike.
The top of the stem has a USB-C port, drawing charge from the battery to power accessories on the go.
Ramping up the range
Orbea has employed Shimano’s open tech for the EP motors, enabling the use of third-party batteries.
Orbea has designed its own enlarged 630Wh battery (most of the competition uses a standard 500Wh or smaller battery) for the bike.
Orbea claims this is good for around nine hours of riding, or 150km of range, with a charge time of four hours via its own smart charger.
If you want a lighter version, the Diem can be specified with a lightweight 540Wh battery (120km range). Alternatively, if you want to go further, a 252Wh range-extender battery is available.
Make it your own
The Diem is available with Orbea’s semi-custom MyO program. Through this, you can specify your Diem with options on accessories, batteries and additional extras.
The Diem line starts with the Diem 30, which gets Shimano’s EP6 mid-motor and 9-speed Shimano Cues drivetrain. Orbea claims a 23kg weight for this model with the 540Wh battery in a size medium.
Next, it’s the Diem 20, with the bigger 630Wh battery, a Gates belt drivetrain and a Shimano Inter-5 hub gear. In a size medium, the Diem 20 has a claimed weight of 23.6kg.
The range-topping Diem 10 comes with Enviolo’s maintenance-free auto-shifting CVT (constant variable transmission) hub, Gates belt drive, Shimano’s EP8 motor and a large 630Wh battery.
A medium-sized Diem 10 has a claimed weight of 24.2kg.
Each model is available in four sizes, from small to XL.
Range and pricing details
Orbea Diem 10
- Price: €5,599 / $5,699 / £5,299
- Frame: Orbea Diem Hydro High Polished 2024, Flex Tech, 135x9 / 142x12, headset routing, custom kickstand, Orbea Urban Cockpit and equipment compatible
- Fork: Orbea Diem carbon fork, full carbon, 1” 1/8 - 1” 1/5 , thru-axle 12x1, post mount, disc mount, thru-axle 12x100mm, long mudguards compatible
- Crank: Shimano Steps EM600
- Headset: FSA 1-1/2” Integrated Aluminium Cup
- Handlebar: Orbea Urban, integrated light
- Bell: Knog OI Classic
- Brakes: Shimano Cues U8020 hydraulic disc
- Rear derailleur: Enviolo Automatiq, BT
- Chain: Gates CDX Belt
- Wheels: Alloy, tubeless, 25c, 32H
- Cassette: Gates CDX 34t for Enviolo
- Tyres: Vittoria e-Randonneur 50-622, reflective band
- Seatpost: OC Mountain Control MC21, 31.6mm, dropper
- Saddle: Selle Royal Vivo Ergo
- Pedals: VP-537 Black
- Mudguard: Curana Apollo Orbit 60mm
- Front light: Supernova Starstream Pro, High Beam
- Rear light: Orbea Fender integrated, with alert light
- Motor: Shimano EP801
- Battery: Orbea Internal 630Wh (Optional 250 Wh range extender)
- Range Extender: Orbea Custom Range Extender 252Wh
- Remote: EN600-L
- Charger: Orbea 2.Generation eBike Smart charger 42V/2-4A
Orbea Diem 20
- Price: €4,599 / $4,699 / £4,299
- Frame: Orbea Diem Hydro High Polished 2024, Flex Tech, 135x9 / 142x12, headset routing, custom kickstand, Orbea Urban Cockpit and equipment compatible
- Fork: Orbea Diem carbon fork, full carbon, 1” 1/8 - 1” 1/5 , thru-axle 12x1, post mount, disc mount, thru-axle 12x100mm, long mudguards compatible.
- Crank: Shimano Steps EM600
- Headset: FSA 1-1/2” Integrated Aluminium Cup
- Handlebar: Orbea Urban, integrated light
- Bell: Knog OI Classic
- Shifters: Microshift TN71 for Nexus Inter 5
- Rear Derailleur: Shimano Nexus Inter-5
- Chain: Gates CDX Belt
- Wheels: Alloy, Tubeless, 25c, 32H
- Cassette: Gates CDX 34t for Shimano Inter 5e
- Tyres: Vittoria e-Randonneur 50-622, reflective band
- Seatpost: Alloy, 31.6mm, Setback 0
- Saddle: Selle Royal Vivo Ergo
- Pedals: VP-537 Black
- Front light: Supernova Starstream Pure, Low Beam
- Rear light: Orbea Fender integrated, with alert light
- Motor: Shimano EP600
- Battery: Orbea Internal 630Wh (Optional 250 Wh range extender)
- Range extender: Orbea Custom range extender 252Wh
- Remote: EN600-L
- Charger: Orbea 2.Generation eBike Smart charger 42V/2-4A
- Brakes: Shimano MT201 Hydraulic Disc
Orbea Diem 30
- Price: €3,799 / $3,899 / £3,499
- Frame: Orbea Diem Hydro High Polished 2024, Flex Tech, 135x9 / 142x12, headset routing, custom kickstand, Orbea Urban Cockpit and equipment compatible
- Fork: Orbea Diem carbon fork, full carbon, 1” 1/8 - 1” 1/5 , thru-axle 12x1, post mount, disc mount, thru-axle 12x100mm, long mudguards compatible.
- Crank: Shimano Steps EM600
- Headset: FSA 1-1/2” Integrated Aluminium Cup
- Handlebar: Orbea Urban, integrated light
- Bell: Knog OI Classic
- Shifters: Shimano Cues SL-U4000
- Rear derailleur: Shimano Cues U4000 GS Shadow
- Brakes: Shimano MT201 Hydraulic Disc
- Chain: KMC eGlide
- Wheels: Alloy, Tubeless, 25c, 32H
- Cassette: Shimano CS-LG300 11-46t 9-Speed
- Tyres: Vittoria e-Randonneur 50-622, reflective band
- Seatpost: Alloy, 31.6mm, Setback 0
- Saddle: Selle Royal Vivo Ergo
- Pedals: VP-537 Black
- Front light: Supernova Starstream Pure, Low Beam
- Rear light: Orbea Fender integrated, with alert light
- Motor: Shimano EP600
- Battery: Orbea Internal 630Wh (Optional 250 Wh range extender)
- Range extender: Orbea Custom range extender 252Wh
- Remote: EN600-L
- Charger: Orbea 2.Generation eBike Smart charger 42V/2-4A
