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.
The Rieju MRT 50 is a 50cc trials-style enduro motorcycle produced by the Spanish manufacturer Rieju, a brand founded in 1934 in Figueres, Catalonia. The MRT 50 was developed as an entry-level off-road machine aimed at young riders and beginners, combining trials-inspired geometry with practical trail riding capability. It became notable in European markets as an accessible and affordable gateway into off-road motorcycling, compliant with AM license restrictions for 16-year-olds in many EU countries.
~3 hp
Power
~4 Nm
Torque
~75 kg
Weight
~45 km/h (restricted to meet EU moped regulations; derestricted approximately 70-75 km/h)
Top Speed
~2.0 L/100km (estimated; note: real-world figures vary significantly with riding style)
Fuel
Naked
Body
Video Review
What Buyers Should Know
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.
Generations & Specs by Year
Original MRT 50 introduced with Minarelli AM6 engine, trials-inspired motard styling, steel frame.
"Skinny, punchy urban weapon with frustrating 50cc limits."
The MRT 50 rides taller and narrower than you'd expect from a restricted learner bike — that 920mm seat height and trials DNA give it a surprisingly planted, confidence-inspiring stance through tight urban corners. The AM6 engine is the real saving grace here; it's a proven, tuneable unit that pulls cleanly from around 4,000 rpm and responds well to a pipe and reed upgrade if your local laws allow. At 45 km/h restricted, you'll get eaten alive on any road with moving traffic, and the stock exhaust is deliberately strangled to the point of embarrassment. The steel frame feels overbuilt for a 50, which works in your favour on rougher roads, but the budget Grimeca-era braking hardware needs an upgrade almost immediately if you plan to ride it hard.
Pros
Cons
Revised bodywork, updated suspension components, refined ergonomics, continued AM6 two-stroke engine.
"Scrappy little trials weapon that punches above displacement."
The Gen 2 MRT 50 is a properly sorted beginner trials bike that actually teaches you something — the revised suspension soaks up rocky terrain better than most 50cc rivals, and the taller 920mm seat forces you into the right standing position from day one. The AM6 engine is a known quantity: tunable, parts-everywhere reliable, but bone-stock it's asthmatic below 4,000 rpm and you'll be slipping the clutch constantly on technical sections. That revised bodywork is legitimately better — slimmer waist, easier to grip with your knees — but the plastic quality still feels like it was sourced from a garden furniture catalogue. At 68kg it's light enough that a teenager can manhandle it through a trials section, but serious club competitors will outgrow it inside a season and start eyeing the 125.
Pros
Cons
Updated graphics and plastics, improved braking system, minor chassis refinements, Euro 2 compliance.
Euro 4 compliant engine updates, revised exhaust system, modernised bodywork styling and instrumentation.
Used Buyer Review
"A gem when clean, but buy carefully or regret it."
$1,500-$3,200 usedThe 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.
Top 10 Accessories
Curated picks for the Rieju Mrt 50 — owned, ridden, recommended.
Common Problems
🔥 2 CRITICALCompression test, listen for piston slap at idle
Spin rear wheel, check for binding or uneven drag
Cold start quality, idle stability, throttle response
Cutting out under load, hard starting, spark test
✅Pre-Purchase Checklist
Decent if maintained, avoid neglected examples
Full Specifications
Rivals & Alternatives
Bikes that buyers cross-shop with the Rieju Mrt 50
Sur-ron Light Bee X
Suzuki Ts125r
Kawasaki Klx110
Yamaha Wr125r
Aprilia Rx 125
Compare Rieju Mrt 50 Side-by-Side
compare_arrowsSpecs, power, weight & buyer verdict — head-to-head with the bikes most often cross-shopped.
Rieju Mrt 50 vs Sur-ron Light Bee X
Specs · Power · Buyer verdict
Rieju Mrt 50 vs Suzuki Ts125r
Specs · Power · Buyer verdict
Rieju Mrt 50 vs Kawasaki Klx110
Specs · Power · Buyer verdict
Rieju Mrt 50 vs Yamaha Wr125r
Specs · Power · Buyer verdict
Rieju Mrt 50 vs Aprilia Rx 125
Specs · Power · Buyer verdict
More Rieju Mrt 50 Guides
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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? +
Yes — the Rieju Mrt 50 is a reasonable choice for new riders (3 hp is manageable), weighing 75 kg. Urban commuters wanting real character, not plasticky
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).
How fast is the Rieju Mrt 50? +
The Rieju Mrt 50 reaches a top speed of ~45 km/h (restricted to meet EU moped regulations; derestricted approximately 70-75 km/h), producing 3 hp at 75 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.
What gear should I buy for a Rieju Mrt 50? +
Motoryk has curated a Top 10 gear list specifically for the Rieju Mrt 50, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/rieju/mrt-50/top10. Each pick is matched to this bike's spec.
