Rieju MR 300 Racing - Specifications & Review

MR 300 Racing

Article Complete Info

Articleid137783
CategoryEnduro-offroad
MakeRieju
ModelMR 300 Racing
Year2024

Chassis, Suspension, Brakes & Wheels

FrametypeCenter frame in chrome-moly-steel. Aluminum subframe.
FrontbrakesSingle disc. Nissin brake caliper
Frontbrakesdiameter260 mm (10.2 inches)
FrontsuspensionKYB ø48 mm, AOS system, closed cartridge
Fronttyre90/90-21
Frontwheeltravel300 mm (11.8 inches)
RearbrakesSingle disc. Nissin brake caliper
Rearbrakesdiameter220 mm (8.7 inches)
RearsuspensionShock absorber with gas tank KYB
Reartyre140/80-18
Rearwheeltravel131 mm (5.2 inches)
WheelsExcel rim, aluminium radiated. Michelin Enduro Medium tires.

Engine & Transmission

Borexstroke72.0 x 72.0 mm (2.8 x 2.8 inches)
ClutchMultidisc in oil bath. Magura clutch pump.
CoolingsystemLiquid
EmissiondetailsEuro 5
EnginedetailsDirect reed valve VForce 4
ExhaustsystemOxa
FuelsystemCarburettor. Kehin PWK 38
Gearbox6-speed
IgnitionDigital CDI
TransmissiontypefinaldriveChain (final drive)

Other Specifications

ColoroptionsGreen/white/yellow
CommentsSpanish brand. Power maps: Rain/Dry.
StarterElectric & kick

Physical Measures & Capacities

Dryweight105.0 kg (231.5 pounds)
Fuelcapacity9.80 litres (2.59 US gallons)
Overallheight1235 mm (48.6 inches)
Overalllength2145 mm (84.4 inches)
Overallwidth810 mm (31.9 inches)
Seatheight950 mm (37.4 inches) If adjustable, lowest setting.

About Rieju

Country of Origin: Spain
Founder: Luis Riera & Jaime Juanola
Best Known For: Lively 50–125 cc roadsters and enduros; later hard-enduro two-strokes (MR/Enduro series)

Company History

Rieju has been part of Spain’s small-displacement fabric since the 1940s, earning a reputation for agile frames and engines that make the most of limited cubic centimeters. Generations learned clutch control and line choice on Rieju 50–125s that balanced playful power with credible brakes and suspension. The brand’s modern chapter leans into enduro, where acquisitions and partnerships brought proven two-stroke platforms under the Rieju badge. Set up for Iberian terrain—rocky climbs, dusty singletrack—the MR/Enduro models emphasize tractable bottom-end, sensible gearing, and real-world protection (radiator guards, skid plates) from the factory. Rieju listens to club paddocks: jetting/EFI maps, seat foam, and lever feel evolve quickly with rider feedback. Historically, the company exemplifies Spain’s rider-centric industry—machines that teach, reward finesse, and survive hard weekends. Whether buzzing to school or threading a ravine, a Rieju feels like a willing accomplice rather than a dare, which is why the marque remains woven into the country’s off-road culture.

Other Years

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