Orbea Diem 20 28mph

Shimano Full-Power Assist

The Shimano EP600 drive unit delivers up to 85Nm of torque with smooth, quiet, natural-feeling assistance, flattening hills and keeping you fresh on every commute. The 630Wh battery is built into the downtube for a clean, balanced, theft-resistant package, with an optional 252Wh range extender for even bigger days. As a Class 3 (28 mph) pedal-assist e-bike, the Diem 20 keeps pace with city traffic.

Clean, Quiet Belt Drive

The Diem 20 runs a Shimano Nexus Inter-5 Di2 electronic 5-speed hub paired with a Gates CDX carbon belt - shifts are at the touch of a button, even at a standstill, and the sealed hub and grease-free belt run clean and silent for years with minimal maintenance.

Designed-In Safety & Comfort

The patented Diamond Glide frame flexes vertically to absorb bumps, while wide Schwalbe Marathon tires smooth out rough streets. Integrated StVZO wraparound lighting keeps you seen day or night, and an integrated kickstand, Spinblock steering limiter, USB-C charging and AirTag-ready mount round out a city bike that's as practical as it is polished.

Available in three colorways

Spaceship Green, Ivory White, and Anthracite Glitter - in sizes S-XL.

Key Features

• Shimano EP600 full-power motor (up to 85Nm) with integrated 630Wh battery
• Class 3 / 28mph pedal-assist e-bike
• Aluminum Orbea Diem Diamond Glide frame, full-carbon fork
• Shimano Nexus Inter-5 Di2 electronic 5-speed hub with Gates CDX carbon belt drive
• Shimano MT200 hydraulic disc brakes
• Integrated StVZO wraparound lighting, front and rear
• Integrated kickstand, USB-C charging, AirTag-ready

Build Kit

Frame

Orbea Diem Aluminum 6061, Diamond Glide

Fork

Orbea Diem full carbon

Motor

Shimano EP600 (up to 85Nm)

Battery

Orbea Internal 630Wh (optional 252Wh range extender)

Display

Shimano EN500

Drivetrain

Shimano Nexus Inter-5 Di2 electronic 5-speed hub

Belt

Gates CDX carbon belt drive

Brakes

Shimano MT200 Hydraulic Disc

Crank

Shimano Steps

Wheels

Alloy, 32H

Tires

Schwalbe Marathon 50-622, reflective

Seatpost

Alloy, 31.6mm

Handlebar

Orbea Urban, integrated light, 720mm

Lighting

Integrated StVZO wraparound front and rear

Sizing

Orbea recommended rider height by size (approximate):

• S: 153-172 cm (5'0"-5'8")
• M: 164-183 cm (5'5"-6'0")
• L: 176-195 cm (5'9"-6'5")

XL

187-204 cm (6'2"-6'8")

Frequently Asked

• How fast is the Orbea Diem 20? It's a Class 3 e-bike with pedal assist up to 28 mph.
• What motor and battery does it use? Shimano EP600 (up to 85Nm) with an integrated 630Wh battery, plus an optional 252Wh range extender.
• Chain or belt? A clean, quiet, grease-free Gates CDX…