UM Flash 125 - 2021 Specifications and Reviews

The 2021 UM Flash 125 is an entry-level scooter designed for commuters and new riders seeking affordable urban mobility. Powered by a reliable 125cc single-cylinder four-stroke engine producing 8.8 horsepower, it offers practical performance with automatic transmission for easy operation. Known for its budget-friendly approach to basic transportation, the Flash 125 suits riders prioritizing cost-effectiveness and simplicity over advanced features.

2021
Not Rated stars Average rating: Not Rated from 0 votes
.

General information

CategoryScooter
Year2021
ModelUM Flash 125
 
 

Engine and Transmission Specifications

Transmission typeChain   (final drive)
GearboxAutomatic
Cooling systemAir
IgnitionC.D.I
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Compression9.0:1
Torque9.0 Nm (0.9 kgf-m or 6.6 ft.lbs) @ 6000 RPM
Power8.8 HP (6.5 kW) @ 7700 RPM
Engine typeSingle cylinder, four-stroke
Capacity:125.0 ccm (7.63 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesExpanding brake (drum brake)
Front brakesSingle disc
Rear tire80/90-17
Front tire70/90-17
Rear SuspensionMonoshock
Front SuspensionTelescopic fork
 
 

Physical measures and capacities

Wheelbase1250 mm (49.2 inches)
Overall width710 mm (28.0 inches)
Overall length2015 mm (79.3 inches)
Overall height1005 mm (39.6 inches)
Seat height770 mm (30.3 inches) If adjustable, lowest setting.

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterElectric & kick
Color optionsRed, Blue, Orange, Silver

Performance Profile & Rider Fit

8.8 hp
Peak Power

Best For

Track5%
City80%
Cornering30%
Daily Riding70%
Touring15%
Passenger30%

Rider Profile

Best ForThis scooter is ideal for beginners or anyone wanting simple, low-stakes transportation without a learning curve.
PurposeIt is built for short urban commutes, running errands, and easy point-to-point city travel rather than performance riding.
Rider FitIts low seat height and light, automatic setup make it accessible to riders of nearly any size or strength.
CharacterIt has a friendly, unintimidating personality suited to relaxed, low-speed riding rather than excitement or adrenaline.
Not Ideal ForIt is not suited for highway touring, carrying a passenger long distances, or riders seeking speed and off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 UM Flash 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 770mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 UM Flash 125, with a moderate knee angle of around 95 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

Find bikes that fit your height →

Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

The 2021 UM Flash 125 is a sleek and stylish motorcycle that offers great performance for its class. With a 125cc engine, this bike is perfect for urban commuting and daily riding. The handling is responsive and the bike feels stable at high speeds. The design is modern and eye-catching, making it stand out on the road. The price point is also very attractive for riders on a budget. Overall, the UM Flash 125 is a solid choice for anyone looking for a reliable and affordable motorcycle. If you're in the market for a new motorcycle, the 2021 UM Flash 125 is definitely worth considering. Its impressive performance, stylish design, and budget-friendly price make it a great option for urban commuters and daily riders. With its 125cc engine, this bike offers a good balance of power and efficiency, making it a practical choice for city streets. Plus, its modern design will surely turn heads wherever you go.Overall, the UM Flash 125 is a great value for riders looking for a reliable and affordable motorcycle.
Reply

Add a Comment


Please Login or Register if you would like to leave a comment.