21 Flow



Want to zip through traffic comfortably during your daily commute while also looking stylish? You’ll love the Scandinavian-inspired design, convenient step-through frame, powerful motor, and 50-mile range of the Espin 21 Flow. Available in smoke gray and forest green, this beautiful e-bike unites form and function. Designed to work especially well for urban commuters, the 21 Flow can maneuver city streets at up to 20 mph. It has eight gears, a powerful Samsung 653 wH battery integrated on the lower part of the e-bike’s frame for better weight distribution, and a seat that encourages a more natural sitting posture, making rides easier on your back.

Forest Green
Smoked grey
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Gives your daily commutes and cruises a smooth boost

The fine-tuned Espin motor and controller that have undergone rigorous testing and QA is powerful and reliable. The Samsung 653 wh battery is fully integrated in the lower part of the frame for weight distribution and can take you as far as 50 miles per charge.

Hop on and off with ease

This step-thru bike was meant to work particularly well for urban commuters. It can easily maneuver city streets, and you can get on and off the bike quickly and easily to help keep you safe. Like the 21 Nesta, it’s great for shorter riders with a low step-thru frame. Also, it has 8 gears, a max speed of 20 mph and will work well on any terrain. So, you can ride the bike outside of the city as well.

Your safety matters

You should never have to compromise on safety or quality. Espin delivers both, with best-in-class manufacturing, great design, and quality performance-all at an unbeatable price point.

Model Name
21 Flow
Top Speed
tp to 20 mph
50 miles
Rear Mounted Geared Hub - 500 watt nominal/800 peak output
Samsung Cells; 48 volts; 13.6 ah, 653Wh
Charge Time
6 hours
Braking System
Zoom Dual Piston Hydraulic Disc Brake, Front/Rear w/180mm Rotor; Zoom levers with Integrated Motor Cutoff
Max Load
275 Lbs
55 lbs
Smart Device Concectivity
Espin color LCD
CST 27.5 x 2.10

Every Espin pedal-assist eBike comes with a 12-month warranty for all components and a 3-year warranty for the frame.

The warranty coverage only applies to the original registered owner of the Espin pedal-assist eBike and is not transferable. Warranty does not cover normal wear and tear, failures due to abuse, neglect, improper repairs, improper maintenance, modification or accidents.