Rieju Marathon 125 AC - Specifications & Review

Marathon 125 AC

Article Complete Info

Articleid182589
CategoryEnduro-offroad
MakeRieju
ModelMarathon 125 AC
Year2013

Chassis, Suspension, Brakes & Wheels

FrametypeSteel dual beam perimeter
FrontbrakesSingle disc. Double piston caliper.
Frontbrakesdiameter260 mm (10.2 inches)
FrontsuspensionFork of Ø36mm.
Fronttyre90/90-21
RearbrakesSingle disc
Rearbrakesdiameter200 mm (7.9 inches)
RearsuspensionMono-shock shock absorber
Reartyre120/80-18
WheelsAlloy rims

Engine & Transmission

Borexstroke54.0 x 54.0 mm (2.1 x 2.1 inches)
CoolingsystemAir
Displacement125.00 ccm (7.63 cubic inches)
EnginedetailsSingle cylinder, four-stroke
ExhaustsystemRacing Muffle
FuelsystemCarburettor. VM26SS
Gearbox6-speed
TransmissiontypefinaldriveChain
Valvespercylinder4

Other Specifications

ColoroptionsBlack, white
CommentsSpanish brand
Electrical12 Volt
StarterElectric

Physical Measures & Capacities

Dryweight105.0 kg (231.5 pounds)
Fuelcapacity6.30 litres (1.66 gallons)
Overallheight1,165 mm (45.9 inches)
Overalllength2,150 mm (84.6 inches)
Overallwidth800 mm (31.5 inches)
Seatheight850 mm (33.5 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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