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Supermotos

2021Rieju MRT 50 SM Trophy

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The 2021 Rieju MRT 50 SM Trophy is a lightweight super motard designed for novice riders and enthusiasts seeking an agile, street-focused machine. Powered by a liquid-cooled Minarelli NG 50 two-stroke engine with a racing exhaust, it delivers responsive performance ideal for urban riding and track days. Its steel perimeter frame and detachable sub-chassis provide durability and easy maintenance.

Capacity
50.0 ccm
Engine
Single, two-stroke
Gearbox
6-speed
Dry weight
85.0 kg
Seat height
870 mm
Power
5.4 HP (4.0 kW)
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2021 Rieju MRT 50 SM Trophy

vs the 2020
Spec20202021
Front suspension FR16V inverted fork of Ø40mm. R16V inverted fork of Ø40mm.
Other years 2017 2018 2019 2020 2021 2022 2023 2024

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 12Agility 52Comfort 40Off-road 20Touring 10Road manners 35
Off-road & trail20%
Cornering30%
City riding60%
Daily riding45%
Touring10%
Two-up20%
Track5%
Best for
Based on the given data, this machine is built as a small-capacity electric commuter for short urban hops rather than performance riding.
Built for
It behaves as a quiet, low-key electric runabout with modest torque delivery and automatic transmission simplicity.
Not ideal for
This is not suitable for riders seeking real supermoto performance, high speed, offroad capability, or long-distance touring.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 870mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2021 Rieju MRT 50 SM Trophy, with a relaxed knee angle of around 135 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine
Capacity
50.0 ccm
Power
5.4 HP (4.0 kW)
Engine type
Single, two-stroke
Power/weight ratio
0.0635 HP/kg (dry)
Bore x stroke
40.3 x 39.0 mm
Cooling system
Liquid
Fuel system
Carburettor
Starting
Kick
Ignition
CDI
Lubrication system
Separate mixture
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Dimensions & weight
Wheelbase
1380 mm
Overall length
2070 mm
Overall width
800 mm
Overall height
1145 mm
Seat height
870 mm
Dry weight
85.0 kg
Fuel capacity
6.30 litres
Oil capacity
1.10 litres
Chassis & suspension
Frame
Highly resistant double cradle steel perimeter. Detachable rear sub-chassis.
Front suspension
R16V inverted fork of Ø40mm.
Rear suspension
Gas Mono-shock shock absorber and seaprate bottle PRS system
Brakes & wheels
Front brakes
Single disc. Galfer wave disc with double piston caliper
Front brakes diameter
300 mm
Rear brakes
Single disc. Galfer wave disc
Rear brakes diameter
200 mm
Front tyre
100/80-17
Rear tyre
130/70-17
Other
Color options
White/black/red/blue
Comments
Made in Spain.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 20172019202120222024
Capacity 50 cc 50 cc 50 cc 50 cc 50 cc
Dry weight 85 kg 85 kg 85 kg 85 kg 85 kg
Seat height 870 mm 870 mm 870 mm 870 mm 870 mm
Fuel capacity 6.3 L 6.3 L 6.3 L 6.3 L 6.3 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

The 2021 Rieju MRT 50 SM Trophy motorcycle is a fantastic option for riders looking for a lightweight and nimble supermoto bike. With its sleek design and impressive performance, this bike is sure to turn heads on the road. The 50cc engine provides plenty of power for urban commuting and weekend adventures, while the agile handling makes it a joy to ride in tight city streets and twisty backroads.

The Rieju MRT 50 SM Trophy also comes equipped with high-quality components such as upside-down front forks, a rear monoshock, and disc brakes for excellent stopping power. The stylish graphics and comfortable seating position further add to the appeal of this impressive motorcycle. Overall, the 2021 Rieju MRT 50 SM Trophy is a top-notch choice for anyone in the market for a versatile and fun supermoto bike that offers a great blend of performance and style.

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Common questions

What is the engine size of the Rieju MRT 50 SM Trophy?

The 2021 Rieju MRT 50 SM Trophy has a Capacity of 50.0 ccm (3.05 cubic inches).

What engine power does the Rieju MRT 50 SM Trophy have?

The 2021 Rieju MRT 50 SM Trophy has a Power of 5.4 HP (4.0 kW).

How many gears does the Rieju MRT 50 SM Trophy have?

The 2021 Rieju MRT 50 SM Trophy has a Gearbox of 6-speed.

How much does the Rieju MRT 50 SM Trophy weigh?

The 2021 Rieju MRT 50 SM Trophy has a Dry weight of 85.0 kg (187.4 pounds).

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