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All Bikes/Rieju/Mrt 300
Rieju Mrt 300
Trial

Rieju Mrt 300

The Rieju Mrt 300 has a top speed of Estimated ~100–110 km/h (note: not designed for top speed; trials-focused gearing limits highway performance), produces Estimated ~38–42 hp and weighs Estimated ~100–115 kg wet/curb weight. Motoryk rates it 7.8/10.

The Rieju MRT 300 is a trials/enduro-oriented motorcycle produced by the Spanish manufacturer Rieju, a company with roots dating back to 1934 in Figueres, Catalonia. Rieju developed the MRT line as a competition-focused trials bike, leveraging partnerships and engine sourcing to compete in the off-road segment, with the 300cc variant targeting serious trials and enduro riders. The model gained additional attention after Rieju acquired the rights to produce bikes based on Gas Gas designs following KTM's takeover of Gas Gas, making the MRT series a notable continuation of Spanish trials heritage.

Estimated ~38–42 hp

Power

Estimated ~35–38 Nm

Torque

Estimated ~100–115 kg wet/curb weight

Weight

Estimated ~100–110 km/h (note: not designed for top speed; trials-focused gearing limits highway performance)

Top Speed

Estimated 2.5–4 L/100km (note: highly variable depending on riding style; trials use is low-speed/high-throttle bursts)

Fuel

Naked

Body

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Video Review

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What Buyers Should Know

⚙️

GASGAS Engine Roots

The MRT 300 uses a 2-stroke engine derived from GASGAS trial technology, giving it proven off-road pedigree. This shared DNA means parts availability is generally good across the trials community.

⚠️

Watch the Cooling System

Early MRT 300 models had occasional issues with coolant hose connections and radiator mounting under hard enduro stress. Inspect these carefully on used bikes, as overheating can cause costly top-end damage.

💰

Strong Niche Resale

Rieju MRTs hold value reasonably well within the hard enduro niche due to limited production numbers and growing brand recognition since acquiring GASGAS's trial division. Low-hour examples are particularly sought after.

Used Buyer Review

7.8/10
Best for
Experienced off-road riders comfortable with two-strokes

"A seriously capable two-stroke bargain if parts logistics don't scare you."

$4,000-$6,500 used

The Rieju MRT 300 is a proper trials-derived enduro that punches well above its price point used. Built on a GasGas-sourced platform before Rieju went independent, these bikes are lightweight, flickable, and genuinely capable on technical terrain. The 300cc two-stroke delivers crisp, linear power that's surprisingly manageable — not the savage hit you'd expect. At used prices, typically $4,000-$6,000, you're getting a competitive machine for serious money savings. Here's the honest bit though — parts availability is the elephant in the room. Rieju's dealer network is thin in North America, and sourcing specific components can mean waiting weeks. Check that the powervalve is clean and the reeds aren't cracked before handing over cash. These bikes also demand proper two-stroke maintenance discipline; neglect shows fast. Find one with documented jetting and suspension setup and you're laughing. If you're a competent off-road rider who knows their way around a two-stroke, the MRT 300 is an absolute bargain. If you need a dealer around every corner, look elsewhere.

Pros
Cons
Skip if: Beginners needing local dealer support nearby

Top 10 Accessories

Curated picks for the Rieju Mrt 300 — owned, ridden, recommended.

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Common Problems

🔥 1 CRITICAL
⚠️Transmission false neutrals or difficult shifting MODERATE

Run through all gears cold and hot

Fix cost: $50-$300
⚠️WP suspension seals leaking fork oil MODERATE

Inspect fork lowers for oil residue or staining

Fix cost: $80-$200
🔥Crankshaft bearing wear on high-hour engines SERIOUS

Listen for bottom-end knock, check service history

Fix cost: $300-$700
💡Electrical gremlins, poor Spanish wiring quality MINOR

Test all lights, kill switch, and starter function

Fix cost: $30-$150

Pre-Purchase Checklist

Check frame for cracks near headstock
Verify airbox and filter condition
Confirm coolant is clean, no milky residue
Ask for service and hour meter records

Decent budget enduro, needs regular maintenance attention

Full Specifications

Engine Power Estimated ~38–42 hp @ 7,000 rpm (note: exact figures not officially published by Rieju for this model)
Torque Estimated ~35–38 Nm @ 5,500 rpm (note: best estimate based on comparable 300cc 2-stroke/4-stroke trials engines)
Top Speed Estimated ~100–110 km/h (note: not designed for top speed; trials-focused gearing limits highway performance)
Weight Estimated ~100–115 kg wet/curb weight (note: varies by model year; Rieju does not always publish official wet weights)
Fuel Consumption Estimated 2.5–4 L/100km (note: highly variable depending on riding style; trials use is low-speed/high-throttle bursts)
Type Trial
Fairing No Fairing (Naked)

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Compare Rieju Mrt 300 Side-by-Side

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Community Reviews

Discussion

Frequently Asked Questions

What are common problems with the Rieju Mrt 300? +

Transmission false neutrals or difficult shifting: Run through all gears cold and hot (moderate) | WP suspension seals leaking fork oil: Inspect fork lowers for oil residue or staining (moderate) | Crankshaft bearing wear on high-hour engines: Listen for bottom-end knock, check service history (serious)

Is the Rieju Mrt 300 a good motorcycle? +

A seriously capable two-stroke bargain if parts logistics don't scare you. Rating: 7.8/10. Best for: Experienced off-road riders comfortable with two-strokes. Avoid if: Beginners needing local dealer support nearby.

What is the horsepower of the Rieju Mrt 300? +

The Rieju Mrt 300 produces Estimated ~38–42 hp @ 7,000 rpm (note: exact figures not officially published by Rieju for this model), with Estimated ~35–38 Nm @ 5,500 rpm (note: best estimate based on comparable 300cc 2-stroke/4-stroke trials engines) of torque. Top speed: Estimated ~100–110 km/h (note: not designed for top speed; trials-focused gearing limits highway performance).

Is the Rieju Mrt 300 good for beginners? +

Yes — the Rieju Mrt 300 is a reasonable choice for new riders (38 hp is manageable), weighing 100 kg. Experienced off-road riders comfortable with two-strokes

Is the Rieju Mrt 300 reliable? +

Owners report 1 critical issue to watch for on the Rieju Mrt 300, notably: Crankshaft bearing wear on high-hour engines (Listen for bottom-end knock, check service history). Buy with a pre-purchase inspection.

Is the Rieju Mrt 300 good for daily use? +

Experienced off-road riders comfortable with two-strokes Fuel: Estimated 2.5–4 L/100km (note: highly variable depending on riding style; trials use is low-speed/high-throttle bursts).

How fast is the Rieju Mrt 300? +

The Rieju Mrt 300 reaches a top speed of Estimated ~100–110 km/h (note: not designed for top speed; trials-focused gearing limits highway performance), producing 38 hp at 100 kg curb weight. Real-world performance depends on rider weight, gearing, and road conditions.

What gear should I buy for a Rieju Mrt 300? +

Motoryk has curated a Top 10 gear list specifically for the Rieju Mrt 300, covering engine oil, tires, chain, battery, and brake pads — see motoryk.com/bikes/rieju/mrt-300/top10. Each pick is matched to this bike's spec.