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Enduro - Offroad · 2010

Marathon 125 PRO

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2010 Rieju Marathon 125 PRO Technical Analysis & Specification Breakdown

Positioned in Rieju's enduro - offroad motorcycle lineup, the 2010 Rieju Marathon 125 PRO pairs a 125 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 52.0 x 58.6 mm (2.0 x 2.3 inches).

On the scales, the Marathon 125 PRO measures 107.6 kg (237 lbs) dry. Rider ergonomics and chassis geometry center around a 900 mm (35.4 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,395 mm (54.9 in) wheelbase engineered for quick, flickable steering geometry. The 6.3-liter (1.7 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Rieju archive, this model family spans 9 indexed model years from 2010 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.

Standover Height
900 mm (35.4 in)
Engine
Displacement 125.0 ccm (7.63 cubic inches)
Engine Type Single cylinder, four-stroke
Engine Details Single cylinder, four-stroke
Bore x Stroke 52.0 x 58.6 mm (2.0 x 2.3 inches)
Valves/Cylinder 4
Fuel System Carburettor. Keihin CVEK 30
Cooling Liquid
Transmission
Gearbox 6-speed
Final Drive Chain (final drive)
Performance
Exhaust Racing Muffler
Chassis
Frame Type Double cradle. Highly resistant steel perimeter
Front Suspension Marzocchi fork of Ø40mm.
Rear Suspension Gas Mono-shock shock absorber PRS system
Wheelbase 1395 mm (54.9 inches)
Wheels & Brakes
Front Tyre 90/90-21
Rear Tyre 120/80-18
Front Brakes Single disc. Galfer Wave
Front Brake Ø 300 mm (11.8 inches)
Rear Brakes Single disc. Galfer Wave
Rear Brake Ø 200 mm (7.9 inches)
Dimensions & Weight
Dry Weight 107.6 kg (237.2 pounds)
Seat Height 900 mm (35.4 inches) If adjustable, lowest setting.
Overall Height 1200 mm (47.2 inches)
Overall Length 2150 mm (84.6 inches)
Overall Width 800 mm (31.5 inches)
Fuel Capacity 6.30 litres (1.66 US gallons)
Other
Starter Electric
Color Options Blue, white
Notes

Spanish made bike.

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Before You Compare This Bike

Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.

Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
Rider Profile

Who Is This Bike For?

🌲
Best For
Off-Road & Adventure
📏
Seat Height
90 cm / 35.4 in
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