Rieju NKD 125 - 2010 Specifications and Reviews

The 2010 Rieju NKD 125 is a lightweight naked bike ideal for new riders and urban commuters seeking affordable, accessible performance. Powered by a simple air-cooled single-cylinder four-stroke engine, it delivers straightforward handling and fuel efficiency. The bike is best known for its practical design and responsive Mikuni carburetor system, making it reliable transportation for entry-level motorcycle enthusiasts.

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General information

CategoryNaked bike
Year2010
ModelRieju NKD 125

Engine and Transmission Specifications

Exhaust systemExhaust pipe with stainless steel silencer
Transmission type,final driveChain
Gearbox5-speed
Cooling systemAir
Fuel systemCarburettor. Mikuni VM20SS
Bore x stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Engine typeSingle cylinder, four-stroke
Capacity:125.00 ccm (7.63 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter220 mm (8.7 inches)
Rear brakesSingle disc
Front brakes diameter280 mm (11.0 inches)
Front brakesSingle disc
Rear tyre dimensions130/80-17
Front tyre dimensions100/80-17
Rear suspensionMono-shock shock absorber
Front suspensionPaioli fork of Ø36mm.
Frame typeTriangular double cradle double steel tube
 
 

Physical measures and capacities

Fuel capacity10.40 litres (2.75 gallons)
Wheelbase1,300 mm (51.2 inches)
Overall width620 mm (24.4 inches)
Overall length1,900 mm (74.8 inches)
Overall height1,060 mm (41.7 inches)
Seat height800 mm (31.5 inches) If adjustable, lowest setting.
Dry weight103.9 kg (229.1 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack, red, blue, silver.
StarterElectric & kick

Performance Profile & Rider Fit

Best For

Track20%
City82%
Cornering55%
Daily Riding70%
Touring25%
Passenger30%

Rider Profile

Best ForThis is a friendly, low-intimidation bike well suited to beginners, new licence holders, or riders stepping up from scooters.
PurposeIt's built primarily as a lightweight urban commuter and learner naked bike rather than a performance or adventure machine.
Rider FitThe low seat height and light dry weight make it easy to handle for smaller or less experienced riders, including at a standstill in traffic.
CharacterIt has a simple, no-frills naked-bike character with modest single-cylinder performance, favoring approachability and nimbleness over outright speed.
Not Ideal ForIt's not a good fit for highway touring, carrying a passenger long distances, or riders seeking strong acceleration and top-end power.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2010 Rieju NKD 125 Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 800mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2010 Rieju NKD 125, with a moderate knee angle of around 115 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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