2021 Rieju MR 300 Racing Technical Analysis & Specification Breakdown
Built around Rieju's enduro - offroad motorcycle platform, the 2021 Rieju MR 300 Racing pairs a 299.3 cc (18.3 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 72.0 x 72.0 mm (2.8 x 2.8 inches).
On the scales, the MR 300 Racing measures 105 kg (231 lbs) dry. Rider ergonomics and chassis geometry center around a 960 mm (37.8 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,480 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 8.9-liter (2.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Rieju archive, this model family spans 4 indexed model years from 2021 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
960 mm (37.8 in)
Engine
Displacement299.3 ccm (18.26 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsDirect reed valve VForce 4
Bore x Stroke72.0 x 72.0 mm (2.8 x 2.8 inches)
Fuel SystemCarburettor
IgnitionDigital CDi
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
ClutchMultidisc in oil bath. Magura clutch pump.
Performance
Emission DetailsEuro 5
ExhaustPowerCore 2.1- Rieju Powered
Chassis
Frame TypeCenter frame in chrome-moly-steel
Front SuspensionKYB ø48 mm, AOS system, closed cartridge
Front Travel300 mm (11.8 inches)
Rear SuspensionKYB mono-shock
Rear Travel131 mm (5.2 inches)
Wheelbase1480 mm (58.3 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre140/80-18
Front BrakesSingle disc. Nissin brake caliper
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc. Nissin brake caliper
Rear Brake Ø200 mm (7.9 inches)
WheelsExcel rim, aluminium radiated
Dimensions & Weight
Dry Weight105.0 kg (231.5 pounds)
Seat Height960 mm (37.8 inches) If adjustable, lowest setting.
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.
