UM DSR 125 EX - 2023 Specifications and Reviews

The 2023 UM DSR 125 EX is a lightweight enduro motorcycle ideal for beginner and intermediate riders seeking affordable off-road capability. Powered by a reliable Aprilia-sourced 124.6cc single-cylinder four-stroke engine producing 14.8 horsepower, it combines nimble handling with modern features including fuel injection and liquid cooling. Best suited for trail riding and introductory adventure riding, the DSR 125 EX offers practical performance and accessibility for riders building off-road experience.

2023
1 stars Average rating: 1 from 1 votes
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General information

CategoryEnduro / offroad
Year2023
ModelUM DSR 125 EX

Engine and Transmission Specifications

Transmission typeChain   (final drive)
Gearbox6-speed
Cooling systemLiquid
IgnitionCDI
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection. Dellorto
Bore x Stroke58.0 x 47.0 mm (2.3 x 1.9 inches)
Compression9.2:1
Power14.8 HP (10.8 kW) @ 10750 RPM
Engine detailsAprilia engine
Engine typeSingle cylinder, four-stroke
Capacity:124.6 ccm (7.60 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Wave disc. Hydraulic. Radially mounted two-piston fork caliper.
Front brakesSingle disc. Wave disc. Hydraulic. Radially mounted two-piston fork caliper.
Rear tire120/80-18
Front tire90/90-21
Rear SuspensionMonoshock with gas reservoir
Front SuspensionInverted telescopic fork
 
 

Physical measures and capacities

Fuel capacity6.30 litres (1.66 US gallons)
Wheelbase1425 mm (56.1 inches)
Ground clearance190 mm (7.5 inches)
Overall width825 mm (32.5 inches)
Overall length2140 mm (84.3 inches)
Overall height1220 mm (48.0 inches)
Seat height910 mm (35.8 inches) If adjustable, lowest setting.
Power/weight ratio0.1190 HP/kg
Dry weight124.0 kg (273.4 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty3-year parts and labour
StarterElectric & kick
Color optionsYellow/black, Orange/black

Performance Profile & Rider Fit

14.8 hp
Peak Power

Best For

Track15%
City45%
Cornering55%
Daily Riding40%
Touring20%
Passenger20%

Rider Profile

Best ForThis bike suits beginner to novice riders who want a light, non-intimidating machine to build skills on both pavement and light trails.
PurposeIt is best suited for casual off-road exploration, learning enduro basics, and short commutes rather than serious performance riding.
Rider FitIts low 124 kg weight and manageable seat height make it accessible to smaller or less experienced riders, though the 910 mm seat height still requires reasonable inseam.
CharacterThe bike has a lightweight, nimble, playful character with modest power that rewards momentum and finesse over brute force.
Not Ideal ForIt is not for riders seeking highway speed, long-distance touring comfort, or aggressive off-road performance on technical terrain.

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

Rider Fit Visualizer

2023 UM DSR 125 EX Rider Ergonomics Assessment

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

Feet:

At 910mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with cannot reach comfortably on the 2023 UM DSR 125 EX, with a cramped knee angle of around 80 degrees and an upright 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.

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Rider Reviews

Total comments: 1
64x64

MotorcycleDB Review

I recently had the opportunity to test ride the 2023 UM DSR 125 EX and I was thoroughly impressed. This electric dirt bike offers a smooth and powerful ride, with its 48V electric motor delivering impressive torque. The lightweight design makes handling a breeze, and the long-lasting battery life allows for extended off-road adventures. The sleek and modern design of the DSR 125 EX is sure to turn heads, and the advanced technology incorporated into the bike sets it apart from other electric dirt bikes on the market. Overall, I highly recommend the 2023 UM DSR 125 EX to anyone looking for a thrilling and eco-friendly off-road riding experience. The 2023 UM DSR 125 EX is a game-changer in the world of electric dirt bikes. With its powerful electric motor, lightweight design, and long-lasting battery life, this bike offers an exhilarating off-road experience. The modern and sleek design, combined with advanced technology, makes the DSR 125 EX a standout choice in the electric dirt bike market. If you're in the market for an electric dirt bike that delivers both power and performance, the UM DSR 125 EX is definitely worth considering.
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