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2025 Orbea

Diem 30 28mph

A 29″ aluminum frame commuter e-bike with mid-range components and shimano hydraulic disc brakes.
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Manufacturer Price

$3,858
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels29″ Aluminum
Drivetrain1 × 9
GroupsetCUES
MotorShimano 600W 85Nm mid-drive
Battery540Wh
BrakesShimano Hydraulic Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

35 mph

Diem 30 28mph

31 mph

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Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full Diem model range

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Sizing
SM

5'0" – 5'8"

MD

5'4" – 6'1"

LG

5'9" – 6'5"

XL

6'1" – 6'9"

Rider Fit Notes

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Price History
Reviews

Summary

The Orbea Diem is a stylish and high-quality commuter e-bike that excels in urban environments with its lightweight frame, dynamic motor, and precise handling. It offers a comfortable ride thanks to its Diamond Glide frame design and urban geometry, though some reviews note a lack of compliance on rougher surfaces. The bike's integrated features, such as the intelligent lighting system and USB-C charging, add to its practicality, but its high price point and stiff ride quality are noted drawbacks.

Pros
  • Lightweight frames and components

  • High-quality components and attention to detail

  • Dynamic motor and precise handling

  • Intelligent lighting system for safety

  • Integrated features like USB-C charging

Cons
  • Lack of compliance on rough surfaces

  • High price point

  • Stiff frame places more weight on hands

Key Quotes
The Diem is not just a powerful tool for city riding, but a classy and trustworthy partner that you can count on every day.
Bikerumor logoBikerumor
The Orbea Diem is an incredibly chic and high-quality urban ebike that impressed us with its handling, offering plenty of agility in city traffic.
Downtown logoDowntown
The Diem capitalises on both its beguiling frame design and the combination of a high-performance mid-drive motor and automatic gear hub to make riding in most environments an absolute pleasure.
ebiketips
I’ve never had more non-cyclist folks comment on a bike than the Diem.
Velo logoVelo

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ebiketips
Orbea Diem 10

Apr 2025

Verdict: An impressive urban option from the Spanish brand, delivering more than meets the eye

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Velo
Review: The Orbea Diem Is an Excellent Coffee Shop Companion

Aug 2024 · Alvin Holbrook

Orbea's new e-bike is a real looker.

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Downtown
Test debut of the new Orbea Diem 20 urban ebike on Parisian boulevards

Jul 2024 · Benedikt Schmidt

Presenting the Orbea Diem, touted as “The new A to B.” Our test reveals how it fares on Parisian boulevards and beyond.

Highs
  • Intuitive handling

  • Very agile

  • Stylish design & high-quality workmanship on the frame

Lows
  • Lack of compliance

  • Expensive

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Bikerumor
Seize the Day with Orbea's New Diem a Lightweight, Urban eBike

Mar 2024 · Ron Frazelle

Spanish bike company, Orbea introduces their new commuter eBike, the Diem, their latest step forward on urban strategy.

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Geometry
Specs
Build
Frame

Orbea Diem 2025, Diamond glide, Hydroformed Alloy 6061, High Polished, OLD 135x9 / OLD 142x12, Orbea cockpit and equipment ecosystem, w/ Custom Kickstand, Trailer compatible.

ColorsSpaceship Green (Matt); Ivory White (Gloss); Anthracite Glitter (Gloss)

Fork

Orbea Diem carbon fork, full carbon, 1" 1/8 - 1" 1/5 , post mount disc mount, Thru Axle 12x100mm, thread M12x1. Long mudguards compatible.

Headset

FSA 1-1/2" Integrated Aluminium Cup

Handlebar

Orbea Urban, Integ. light, Backsweep 30, Rise 50, Width 720

Saddle

Selle Royal Essenza 271x185mm

Seatpost

SP03, Alloy, 31.6mm, Setback 0

TypeRigid

Pedals

VP-836 Black with reflectors

Groupset
Rear Derailleur

Shimano Cues U4000 GS Shadow

Crank

Alloy 44t w/chainguard

Shifters

Shimano Cues SL-U4000

Cassette

Shimano CS-LG300 11-46t 9-Speed

Chain

KMC eGlide

Brakes

Shimano MT200 Hydraulic Disc

TypeShimano Hydraulic Disc

Wheels
Rims

Alloy, 26c, 32H

Tires

Schwalbe Marathon, 50-622, Reflective Tape

Electric Components
Motor

Shimano EP600

Battery

Orbea Internal 540Wh

Display

Shimano EN500

Charger

Orbea 2.Generation eBike Smart charger 42V/2-4A

Accessories
Lights

Front: Supernova Starstream Pro, High Beam, Rear: Orbea Fender integrated, with alert light

Fenders

Curana Apollo Orbit 60mm

Racks

Orbea RR-01 Alloy, w/Mik & Mik Side and Ortlieb QL3.1 system. Max. 20Kg

Lock

N/A

Bell

Knog Oi Small Flat

Rider Notes
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First added November 18

Last updated June 13