2022 Diamondback Bicycles Union 1

Category
Commuter
Design
Flat Bar, Rigid, non-suspension corrected
Frame
Aluminum
Fork
Aluminum
Features
Disc brake, E-bike

Geometry

MD 5'7" - 5'10"
SM 5'4" -5'7"
LG 5'10" - 6'1"
XL 6'1"-6'4"
Stack
612mm
612mm
623mm
642mm
Reach
408mm
408mm
419mm
429mm
Stack to Reach Ratio
1.5:1
1.5:1
1.49:1
1.5:1
Seat Tube Length, C-T
430mm
380mm
480mm
530mm
Top Tube Length, Effective/Horizontal Center
595mm
595mm
610mm
625mm
Top Tube Slope
20.6deg
25.6deg
16.3deg
13deg
Head Tube Angle
70deg
70deg
70.5deg
70.5deg
Seat Tube Angle
73deg
73deg
73deg
73deg
Head Tube Length
160mm
160mm
170mm
190mm
Bottom Bracket Drop
65mm
65mm
65mm
65mm
Bottom Bracket Height
288mm
288mm
288mm
288mm
Chainstay Length
470mm
470mm
470mm
470mm
Chainstay Length Horizontal
465.5mm
465.5mm
465.5mm
465.5mm
Front-Center
662.7mm
662.7mm
672.7mm
688.6mm
Front-Center Horizontal
659.5mm
659.5mm
669.5mm
685.5mm
Wheelbase
1125mm
1125mm
1135mm
1151mm
Fork Offset/Rake
50mm
50mm
50mm
50mm
Fork Length, Unknown
440mm
440mm
440mm
440mm
Trail
75.3mm
high
75.3mm
high
72mm
high
72mm
high
Mechanical Trail
70.7mm
70.7mm
67.8mm
67.8mm
Wheel Flop
24.2mm
24.2mm
22.6mm
22.6mm
Standover Height
750mm
728mm
786mm
820mm
Tire to Pedal Spindle
139.8mm
170 mm cranks
139.8mm
170 mm cranks
149.7mm
170 mm cranks
165.6mm
170 mm cranks
Pedal Spindle to Ground Clearance
118mm
170 mm cranks
118mm
170 mm cranks
118mm
170 mm cranks
118mm
170 mm cranks

1 Build

MD 5'7" - 5'10"
SM 5'4" -5'7"
LG 5'10" - 6'1"
XL 6'1"-6'4"
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
2.4in
2.4in
2.4in
2.4in
Tire Outer Diameter
705.9mm
705.9mm
705.9mm
705.9mm
Bike Length with Tires
1830.9mm
1830.9mm
1840.9mm
1856.9mm
Crank Length
170mm
170mm
170mm
Handlebar Width
700mm
700mm
700mm
Stem Length
80mm
80mm
80mm

Stack and Reach vs. Category Trend

Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Learn more about the Upright/Aggressive Scale
Category Trend
Commuter
Source:https://www.diamondback.com/bikes/road-gravel-bikes/ebike/union-1-4664