AJS CSR NKT1 125 - 2009 Specifications and Reviews

The 2009 AJS CSR NKT1 125 is a lightweight sport bike ideally suited for new riders and commuters seeking an affordable entry into motorcycling. Its 124cc twin-cylinder engine delivers modest power with reliable liquid cooling and electric start convenience. Known for its nimble handling and fuel efficiency, this model represents accessible sportbike styling for budget-conscious enthusiasts.

2009
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General information

CategorySport
Year2009
ModelAJS CSR NKT1 125
 
 

Engine and Transmission Specifications

ClutchWet, multiplate
Transmission typefinal driveChain
Gearbox5-speed
Cooling systemLiquid
StarterElectric
IgnitionCoil CDI
Fuel systemCarburettor
Bore x stroke44.0 x 40.0 mm (1.7 x 1.6 inches)
Power11.39
Stroke4
Engine typeTwin
Capacity:124.00 ccm (7.57 cubic inches)

Physical measures and capacities

Wheelbase1,320 mm (52.0 inches)
Seat height787 mm (31.0 inches) If adjustable, lowest setting.
Dry weight153.0 kg (337.3 pounds)

AJS CSR NKT1 125 dimensions and frame

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre dimensions130/90-15
Front tyre dimensions90/90-18
Rear suspensionTwin reservoir shocks
Front suspensionTelefork
 
 

Speed and acceleration

Power/weight ratio0.0744 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsRed
Fuel capacity18.00 litres (4.76 gallons)

Performance Profile & Rider Fit

11.4 hp
Peak Power

Best For

Track15%
City60%
Cornering50%
Daily Riding55%
Touring25%
Passenger25%

Rider Profile

Best ForThis bike suits new or learner riders, including those on a restricted licence, rather than experienced riders seeking performance.
PurposeIt is best suited to light urban riding and short leisurely trips rather than outright speed or long-distance work.
Rider FitThe low seat height and light dry weight make it easy to handle and manage for smaller or less experienced riders.
CharacterIt has a quirky, cruiser-styled sportbike look with a small-capacity twin engine, offering charm and character over raw performance.
Not Ideal ForIt is not suitable for riders wanting high speed, serious touring range, or any off-road capability.

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

Rider Fit Visualizer

2009 AJS CSR NKT1 125 Rider Ergonomics Assessment

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

Feet:

At 787mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2009 AJS CSR NKT1 125, with a cramped knee angle of around 70 degrees and a forward-leaning 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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