2015 Yamaha Jog ZR Technical Analysis & Specification Breakdown
Positioned in Yamaha's scooter motorcycle lineup, the 2015 Yamaha Jog ZR pairs a 49 cc (3 cu in) liquid-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 3.4 HP (2.5 kW) at 7,000 rpm while maximum torque reaches 3.9 Nm (2.9 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 38.0 x 43.5 mm (1.5 x 1.7 inches) with a 12.0:1 compression ratio.
On the scales, the Jog ZR measures 83 kg (183 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 725 mm (28.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,160 mm (45.7 in) wheelbase engineered for quick, flickable steering geometry. The 4.4-liter (1.2 US gal) fuel tank paired with a rated consumption of 1.43 L/100 km provides an estimated theoretical range of roughly 308 km (191 miles) between fill-ups, while factory top speed is listed at 105 km/h (65 mph).
Within MotoLibrary's Yamaha archive, this model family spans 3 indexed model years from 2011 to 2015, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power Band Window
6,500–7,000 rpm
Theoretical Range
~308 km (191 mi)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power3.4 HP (2.5 kW)) @ 7000 RPM
Torque3.9 Nm (0.4 kgf-m or 2.9 ft.lbs) @ 6500 RPM
Compression12.0:1
Bore x Stroke38.0 x 43.5 mm (1.5 x 1.7 inches)
Fuel SystemInjection
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTCI
LubricationSeparate lubrication
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchDry centrifugal
Performance
Top Speed105.0 km/h (65.2 mph)
Fuel Consumption1.43 litres/100 km (69.9 km/l or 164.49 mpg)
Greenhouse Gases33.2 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSteel backbone
Rake24.0°
Trail70 mm (2.8 inches)
Front SuspensionTelescopic fork
Front Travel70 mm (2.8 inches)
Rear SuspensionUnit swing
Rear Travel60 mm (2.4 inches)
Wheelbase1160 mm (45.7 inches)
Ground Clearance90 mm (3.5 inches)
Wheels & Brakes
Front Tyre90/90-10
Rear Tyre90/90-10
Front BrakesSingle disc. Bremo
Front Brake Ø190 mm (7.5 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø110 mm (4.3 inches)
WheelsDie cast aluminium
Dimensions & Weight
Weight incl.83.0 kg (183.0 pounds)
Seat Height725 mm (28.5 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.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
