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All Bikes/Rieju/Mrt 50
Rieju Mrt 50
Trial

Rieju Mrt 50

The Rieju Mrt 50 has a top speed of ~45 km/h (restricted to meet EU moped regulations; derestricted approximately 70-75 km/h), produces ~3 hp and weighs ~75 kg. Motoryk rates it 7/10.

La Rieju MRT 50 es una moto de enduro estilo trial de 50 cc producida por el fabricante español Rieju, una marca fundada en 1934 en Figueres, Cataluña. La MRT 50 se desarrolló como una máquina todoterreno para principiantes y dirigida a jóvenes pilotos y principiantes, y combina una geometría inspirada en el trial con una práctica capacidad de conducción en senderos. Se hizo famosa en los mercados europeos como una puerta de entrada accesible y asequible al motociclismo todoterreno, ya que cumplía con las restricciones de licencia AM para jóvenes de 16 años en muchos países de la UE.

~3 hp

Potencia

~4 Nm

Torsión

~75 kg

Peso

~45 km/h (restricted to meet EU moped regulations; derestricted approximately 70-75 km/h)

Velocidad máxima

~2.0 L/100km (estimated; note: real-world figures vary significantly with riding style)

Combustible

Desnudo

Cuerpo

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Lo que los compradores deben saber

⚙️

Minarelli AM6 Engine

The MRT 50 uses the widely respected Minarelli AM6 two-stroke engine, meaning spare parts and performance upgrades are cheap and readily available across Europe. This makes maintenance far easier than bikes with proprietary engines.

⚠️

Watch the Cooling System

The liquid-cooled AM6 variant is prone to coolant leaks and water pump wear if not regularly serviced — always check for overheating signs or milky residue before buying used. A neglected cooling system can lead to costly piston and cylinder damage.

💶

Decent Resale Retention

The Rieju MRT 50 holds its value reasonably well in the 50cc trials/enduro segment due to its sporty image and Spanish build quality, which is generally regarded as a step above budget Chinese competitors. Buying used in good condition is relatively safe as an investment.

Generaciones y especificaciones por año

2000–2005 Gen 1

El MRT 50 original presentado con motor Minarelli AM6, estilo motard inspirado en las pruebas y marco de acero.

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7.2/10

"Un arma urbana delgada y contundente con frustrantes límites de 50 cc."

La MRT 50 es más alta y estrecha de lo que cabría esperar de una bicicleta para estudiantes con restricciones: la altura del asiento de 920 mm y el ADN de las pruebas le dan una postura sorprendentemente firme e inspiradora de confianza en las curvas urbanas cerradas. El motor AM6 es la verdadera salvación: se trata de una unidad ajustable y de eficacia comprobada que arranca sin problemas a partir de unas 4.000 rpm y responde bien a una mejora de tubos y lengüetas, si la legislación local lo permite. Con una velocidad de 45 km/h restringida, te comerán vivo en cualquier carretera con tráfico en movimiento, y el escape original se estrangula deliberadamente hasta el punto de causar vergüenza. La estructura de acero da la impresión de estar sobreconstruida para una carrera de 50, lo que te favorece en carreteras más difíciles, pero el sistema de frenado económico de la era Grimeca necesita una mejora casi inmediata si tienes pensado pedalear con fuerza.

Pros

+Motor AM6 altamente ajustable
+Geometría de manejo alta y segura
+El marco de acero ligero absorbe el castigo
+Posición de conducción genuina de motard

Contras

La restricción de 45 km/h elimina la usabilidad
Los frenos de serie se sienten peligrosamente blandos
Los plásticos se agrietan después de pequeños vuelcos
Lo mejor para: Niños de 16 años que aprenden a conducir de verdad Omitir si: Necesitas la velocidad real de la carretera
2006–2010 Gen 2

Carrocería revisada, componentes de suspensión actualizados, ergonomía refinada y motor AM6 de dos tiempos continuo.

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7.4/10

"Arma pequeña y rudimentaria que golpea por encima del desplazamiento."

La MRT 50 de segunda generación es una bicicleta de trial para principiantes bien clasificada que realmente te enseña algo: la suspensión revisada absorbe mejor los terrenos rocosos que la mayoría de las rivales de 50 cc, y el asiento más alto de 920 mm te obliga a adoptar la posición correcta de pie desde el primer día. El motor AM6 es de sobra conocido: ajustable, fiable en todas partes, pero de serie, es asmático por debajo de las 4.000 rpm y tendrás que pisar el embrague constantemente en los tramos técnicos. La carrocería revisada es, sin lugar a dudas, mejor (cintura más delgada, más fácil de agarrar con las rodillas), pero la calidad del plástico sigue pareciendo que proviene de un catálogo de muebles de jardín. Con 68 kg, es lo suficientemente ligera como para que un adolescente pueda aguantar una sección de trial, pero los competidores más serios de un club lo superarán en una temporada y empezarán a tener la mira puesta en los 125.

Pros

+La suspensión revisada es notablemente más compatible
+Motor AM6: piezas baratas, ajustables y universales
+La ergonomía delgada recompensa la técnica adecuada de los ensayos
+Lo suficientemente ligero como para manipularlo cuando choques

Contras

La banda de potencia llega tarde, estrecha
Paneles de carrocería de plástico frágiles y baratos
El límite de 45 km/h limita el uso versátil
Lo mejor para: Conceptos básicos de las pruebas de aprendizaje para jóvenes principiantes Omitir si: Competir seriamente más allá de la clase de novatos
2011–2016 Gen 3

Gráficos y plásticos actualizados, sistema de frenado mejorado, pequeñas mejoras en el chasis, cumplimiento de la normativa Euro 2.

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2017–2023 Gen 4

Actualizaciones del motor que cumplen con la normativa Euro 4, sistema de escape revisado, estilo de carrocería e instrumentación modernizados.

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Reseña de un comprador usado

7.0/10
Lo mejor para
Urban commuters wanting real character, not plasticky

"A gem when clean, but buy carefully or regret it."

$1,500-$3,200 used

The Rieju MRT 50 is a Spanish-built trials-influenced supermoto that punches above its 50cc weight class in terms of looks and chassis quality. The frame is genuinely well-engineered, handling is razor-sharp, and the upright ergonomics make it genuinely fun to hustle through tight urban traffic. It feels more serious than your average restricted learner machine, and that's legitimately earned. Here's the reality check though — used examples are a lottery. These bikes attract young riders who thrash them hard, and the 50cc two-stroke engine is fragile when neglected. Always check for seized components, dodgy reed valves, and whether the previous owner ever bothered mixing oil properly. Parts availability is patchy outside Spain, so factor that into your budget. If you find a clean, low-mileage example with service history, you've found something worth having. If it's tatty and cheap, walk away — repairs will eat you alive.

Pros
Contras
Omitir si: You want cheap, easy, worry-free ownership
Best gear for the Rieju Mrt 50

Top 10 Accessories

Curated picks for the Rieju Mrt 50 — owned, ridden, recommended.

Affiliate · we may earn
Echo 6450001G Power Blend Gold Oil Mix 50:1 for 2 stroke2cycle Outdoor Power Equipment, High Performance Semi Synthetic, Low Smoke Emission 2.6 fl oz (6 Pack), 6450001G 2.6 fl oz
Engine Oil
Echo 6450001G Power Blend Gold Oil Mix 50:1 for 2 stroke2cycle Outdoor Power Equipment, High Performance Semi Synthetic, Low Smoke Emission 2.6 fl oz (6 Pack), 6450001G 2.6 fl oz
View on Amazon →
2.5-10" Off-Road Tire and Inner Tube Set, Dirt Bike Tire with 10-Inch Rim and 2.5/2.75-10 Dirt Bike Inner Tube Heavy Duty Compatiblewith Honda CRF50/XR50, Suzuki DRZ70/JR50, PW50(2 Set)
Tires
2.5-10" Off-Road Tire and Inner Tube Set, Dirt Bike Tire with 10-Inch Rim and 2.5/2.75-10 Dirt Bike Inner Tube Heavy Duty Compatiblewith Honda CRF50/XR50, Suzuki DRZ70/JR50, PW50(2 Set)
View on Amazon →
NICHE Drive Sprocket Chain Combo for Rieju MRT 50 Pro Front 11 Rear 52 Tooth 420HZ Standard 132 Links
Chain & Lube
NICHE Drive Sprocket Chain Combo for Rieju MRT 50 Pro Front 11 Rear 52 Tooth 420HZ Standard 132 Links
View on Amazon →
Mighty Max Battery YTX4L-BS SLA Battery for ATV Quad Dirt/Pit Bike 50/70/110/125 CC Brand Product
Battery
Mighty Max Battery YTX4L-BS SLA Battery for ATV Quad Dirt/Pit Bike 50/70/110/125 CC Brand Product
View on Amazon →
Road Passion Rear Brake Pads for RIEJU MRT-Pro 50 (Radial/double piston caliper) 2009-2015 R/ RS3 50 2011-2015 R
Brake Pads
Road Passion Rear Brake Pads for RIEJU MRT-Pro 50 (Radial/double piston caliper) 2009-2015 R/ RS3 50 2011-2015 R
View on Amazon →
Valvoline VR1 Racing SAE 20W-50 Motor Oil 5 QT
Engine Oil
Valvoline VR1 Racing SAE 20W-50 Motor Oil 5 QT
View on Amazon →
2.50-10 Dirt Bike Tire and Inner Tube Set,10-Inch Rim Off Road Mini Dirt Bike Front/Rear Tire and Inner Tube,Compatible with Honda CRF50/XR50, Suzuki JR50/DRZ70, and Yamaha PW50
Tires
2.50-10 Dirt Bike Tire and Inner Tube Set,10-Inch Rim Off Road Mini Dirt Bike Front/Rear Tire and Inner Tube,Compatible with Honda CRF50/XR50, Suzuki JR50/DRZ70, and Yamaha PW50
View on Amazon →
NICHE Drive Sprocket Chain Combo for Rieju MRT 50 Pro Front 11 Rear 52 Tooth 420V O-Ring 132 Links
Chain & Lube
NICHE Drive Sprocket Chain Combo for Rieju MRT 50 Pro Front 11 Rear 52 Tooth 420V O-Ring 132 Links
View on Amazon →
CB CHROMEBATTERY YTX4L-BS 12 V 50 CCA AGM – Maintenance-Free 4 Ah Battery for Mini ATV, Scooter, Pocket Bike – T3 Nut & Bolt Terminal – Fits TaoTao 50, Razor MX500 & More
Battery
CB CHROMEBATTERY YTX4L-BS 12 V 50 CCA AGM – Maintenance-Free 4 Ah Battery for Mini ATV, Scooter, Pocket Bike – T3 Nut & Bolt Terminal – Fits TaoTao 50, Razor MX500 & More
View on Amazon →
Road Passion Rear Brake Pads for RIEJU MRT Pro Supermotard (Radial caliper/cast wheel) 2009-2015 R/NKD 50 2008-2010 R
Brake Pads
Road Passion Rear Brake Pads for RIEJU MRT Pro Supermotard (Radial caliper/cast wheel) 2009-2015 R/NKD 50 2008-2010 R
View on Amazon →

Problemas comunes

🔥 2 CRITICAL
🔥Piston and ring wear from abuse SERIOUS

Compression test, listen for piston slap at idle

Fix cost: $150-$300
⚠️Seized or worn rear brake caliper MODERATE

Spin rear wheel, check for binding or uneven drag

Fix cost: $40-$120
💡Carb jetting issues and dirty pilot jet MINOR

Cold start quality, idle stability, throttle response

Fix cost: $20-$60
🔥Corroded or failing CDI unit SERIOUS

Cutting out under load, hard starting, spark test

Fix cost: $80-$180

Lista de verificación previa a la compra

Run compression test before buying
Check frame for cracks near swingarm
Inspect exhaust for repack or damage
Verify VIN and confirm not restricted

Decent if maintained, avoid neglected examples

Full Specifications

Engine Power ~3 hp @ 7,000 rpm (restricted; note: estimated based on typical 50cc two-stroke output in EU spec)
Torque ~4 Nm @ 6,000 rpm (note: estimated; official figures not widely published)
Top Speed ~45 km/h (restricted to meet EU moped regulations; derestricted approximately 70-75 km/h)
Weight ~75 kg (wet/curb weight; note: estimated based on similar Rieju 50cc models)
Fuel Consumption ~2.0 L/100km (estimated; note: real-world figures vary significantly with riding style)
Type Trial
Fairing No Fairing (Naked)

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Community Reviews

Discussion

Frequently Asked Questions

What are common problems with the Rieju Mrt 50? +

Piston and ring wear from abuse: Compression test, listen for piston slap at idle (serious) | Seized or worn rear brake caliper: Spin rear wheel, check for binding or uneven drag (moderate) | Carb jetting issues and dirty pilot jet: Cold start quality, idle stability, throttle response (minor)

Is the Rieju Mrt 50 a good motorcycle? +

A gem when clean, but buy carefully or regret it. Rating: 7.0/10. Best for: Urban commuters wanting real character, not plasticky. Avoid if: You want cheap, easy, worry-free ownership.

What is the horsepower of the Rieju Mrt 50? +

The Rieju Mrt 50 produces ~3 hp @ 7,000 rpm (restricted; note: estimated based on typical 50cc two-stroke output in EU spec), with ~4 Nm @ 6,000 rpm (note: estimated; official figures not widely published) of torque. Top speed: ~45 km/h (restricted to meet EU moped regulations; derestricted approximately 70-75 km/h).

Is the Rieju Mrt 50 good for beginners? +

Not really — the Rieju Mrt 50 is better for experienced riders (3700050 hp can be intimidating). Urban commuters wanting real character, not plasticky Avoid if: You want cheap, easy, worry-free ownership

Is the Rieju Mrt 50 reliable? +

Owners report 2 critical issues to watch for on the Rieju Mrt 50, notably: Piston and ring wear from abuse (Compression test, listen for piston slap at idle). Buy with a pre-purchase inspection.

Is the Rieju Mrt 50 good for daily use? +

Urban commuters wanting real character, not plasticky Fuel: ~2.0 L/100km (estimated; note: real-world figures vary significantly with riding style).