2021

Diamondback Union 1

Name: 2021 Diamondback Union 1
Brand: Diamondback

hybrid

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Colour / Onyx Matte

Size / Medium, Large, X-Large

At a glance

The 2021 Diamondback Union 1 is an hybrid aluminium road bike. It is priced at $3,500 USD, comes in a range of sizes, including Medium, Large, X-Large and a shimano drivetrain. The bike is part of Diamondback's Union 1 range of road bikes.

- Get it done.

The Class 3 Union 1 gets things done. Built on a sleek aluminum frame with internal cable routing, this e-bike is powered by a Bosch Performance Line Speed motor and a Powertube integrated 400Wh battery. The Bosch Purion on-board computer lets you focus on the important things with a minimalist design and with all the data you need at the touch of a button. A 10-speed Shimano drivetrain fine-tunes your pedaling, while Tektro hydraulic disc brakes keep your speed under control. Wide tires on 27.5-inch wheels take the sting out of rough pavement.

With an integrated rack and fenders, the Union 1 lets you cut through city traffic with ease and confidence.

- 350W Bosch Performance Line Speed motor for powerful pedal assistance

- Bosch Powertube 400Wh battery provides up to a 55-mile range

- Tektro M735 hydraulic disc brakes for maximum stopping power in any conditions

- Shimano Deore 10-speed drivetrain offers smooth, reliable shifting

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Where To Buy

Diamondback

Diamondback Union 1

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Reviews

Specifications

Frameset

Frame

Formed 6061 T6 Oversize Aluminum Alloy, Thru Axle Dropout, Disc Brake Specific, Powertube Integrated Battery
Motor

Bosch Performance Line Speed, 85Nm Torque, 28mph
Battery

Bosch Powertube 400Wh

Wheels

Hubs

Front: Formula, Sealed Bearing, Thru Axle
Rear: Formula, Sealed Bearing, Thru Axle
Tires

[F] 27.5 x 2.4" Schwalbe Super Moto

Drivetrain

Chain

KMC x10e EPT, Ebike Specific
Crank

FSA Forged Aluminum for Bosch System
Rear Derailleur

Shimano Deore M610, SGS
Shifters

Shimano Deore SL-M6000, 10 Speed

Components

Brakeset

Tektro M735, 4 Piston Front 180mm Rotor, 2 Piston Rear 160mm Rotor
Handlebar

Aluminum Alloy 3D Forged
Saddle

Custom Ergo Performance
Stem

Aluminum Alloy 3D Forged
Grips

Ergo Comfort Control
Headset

Integrated, Sealed Bearing

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FAQ

Q: How much is a 2021 Diamondback Union 1?

A 2021 Diamondback Union 1 is typically priced around $3,500 USD when new. Be sure to shop around for the best price, and also look to the used market for a great deal.

Q: What size 2021 Diamondback Union 1 should I get?

The 2021 Diamondback Union 1 comes in sizes Medium, Large, X-Large. After measuring your height, use the size chart below to find the typical Diamondback Union 1 size for your height. Remember that these sizes are a general guide and bike sizes can vary between riders and bikes. The best way to find your size is to go for a test ride.

Rider Height (cm)	Rider Height (in)	Frame Size
148cm - 158cm	4'10" - 5'2"	XS
158cm - 168cm	5'2" - 5'6"	S
168cm - 178cm	5'6" - 5' 10"	M
178cm - 185cm	5'10" - 6'1"	L
185cm - 193cm	6'1" - 6'4"	XL
193cm - 198cm	6'4" - 6'6"	XXL

Endurance

General

Gravel

Touring

Triathlon

Cyclocross