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Supermotos

2011Rieju MRT Pro 50 SM

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The 2011 Rieju MRT Pro 50 SM is a liquid-cooled two-stroke supermoto designed for young riders and beginners seeking an agile, lightweight machine. Its responsive single-cylinder engine and nimble handling excel in urban environments and light off-road use. Known for reliable performance and affordable pricing, it remains a popular entry-level choice in the 50cc supermoto category.

Capacity
50.0 ccm
Engine
Single, two-stroke
Gearbox
6-speed
Dry weight
96.5 kg
Seat height
900 mm
Power
5.4 HP (4.0 kW)
⇄ Compare with another bike + Add to garage All model years
Other years 2011 2012 2013

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 23Agility 90Comfort 35Off-road 15Touring 10Road manners 60
Off-road & trail15%
Cornering90%
City riding70%
Daily riding40%
Touring10%
Two-up15%
Track65%
Best for
Built as a pint-sized supermoto for sharp, flickable fun on tight tracks and urban streets rather than any serious speed or distance work.
Built for
A playful, high-revving two-stroke supermoto with premium-feeling components like an inverted Marzocchi fork and radial brakes packed into a tiny, toy-like chassis.
Not ideal for
Not suitable for riders wanting highway speed, long-distance comfort, passenger carrying, or genuine off-road capability.

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 900mm, a rider of 68.9" with a 31" (estimated) inseam will not reach the ground comfortably on the 2011 Rieju MRT Pro 50 SM, with a relaxed knee angle of around 135 degrees and a slightly forward 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
0.0560 HP/kg (dry)
Bore x stroke
40.3 x 39.0 mm
Cooling system
Liquid
Fuel system
Carburettor
Starting
Kick
Lubrication system
Separate mixture
Torque
Not on record - add it
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
Multidisk
Dimensions & weight
Wheelbase
1332 mm
Overall length
1970 mm
Overall width
750 mm
Overall height
1150 mm
Seat height
900 mm
Dry weight
96.5 kg
Fuel capacity
6.30 litres
Oil capacity
1.10 litres
Chassis & suspension
Frame
Double cradle. Highly resistant steel perimeter
Front suspension
Marzocchi inverted fork of 40mm.
Rear suspension
Gas Mono-shock shock absorber and separate bottle PRS system
Brakes & wheels
Front brakes
Single disc. Galfer wave disc of 300mm. with double piston caliper.
Front brakes diameter
300 mm
Rear brakes
Single disc. Wave disc of 200mm.
Rear brakes diameter
200 mm
Front tyre
100/80-17
Rear tyre
130/70-17
Other
Color options
Black, white

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 201120122013
Capacity 50 cc 50 cc 50 cc
Dry weight 97 kg 97 kg 85 kg
Seat height 900 mm 900 mm 850 mm
Fuel capacity 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.

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Common questions

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

The 2011 Rieju MRT Pro 50 SM has a Capacity of 50.0 ccm (3.05 cubic inches).

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

The 2011 Rieju MRT Pro 50 SM has a Power of 5.4 HP (4.0 kW).

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

The 2011 Rieju MRT Pro 50 SM has a Gearbox of 6-speed.

How much does the Rieju MRT Pro 50 SM weigh?

The 2011 Rieju MRT Pro 50 SM has a Dry weight of 96.5 kg (212.7 pounds).

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