The YZF-R125 is the most advanced 125 production supersport machine that Yamaha has ever built. This radical, high-revving, fuel-injected 125 is the work of the same engineers who created our legendary YZF-R1 and YZF-R6 supersport bikes.
And, as you’d expect, the YZF-R125 is packed with advanced MotoGP technology as well as a whole range of R-series type engine and chassis features. Its liquid-cooled, 4-stroke, 4-valve, single cylinder, SOHC engine is tuned to deliver free-revving performance right through to maximum power at 9,000rpm – and for instant response and efficient operation this remarkable 6-speed 125 is equipped with a compact fuel injection system.
The race-inspired chassis features a Deltabox frame and aluminium swinging arm for outstanding handling performance, and lightweight 5-spoke wheels help to minimize unsprung weight to give impressive roadholding. A large diameter 292mm front disc with a 230mm diameter rear disc make for effective stopping power, and the aggressive R-series bodywork lets everybody know exactly where this bike’s DNA has come from!
Main Features of Yamaha R125:
Liquid-cooled single-cylinder 4-stroke
SOHC 4-valve cylinder head
Wet-sump lubrication system
Fuel injection
Electric start
6-speed transmission
R6-style mid-ship muffler
Dual catalysers
Air Induction system
Just like its larger R-series brothers, the new R125 features a lightweight Deltabox frame which delivers an optimum balance of strength and rigidity for class-leading handling performance. The twin spar Deltabox design has proved to be one of the lightest and best-handling frame designs in the supersport category, and its use on the new YZF-R125 underlines Yamaha’s total commitment to building the best-handling machine in the class.One of the most significant features of the new R125 is that it has been constructed with a fullsized chassis, which is unique in its segment. For example, the wheelbase on the new Yamaha R-series is 1,353mm, over 58mm greater than a typical sports 125, which helps to enhance stability.
With its unmistakeable R-series styling, the R125 stands out in the crowd, and is easy to mistake for a much larger capacity machine. The dual headlights have a distinctive R-series look, while the low frontal area and small tail are clearly influenced by the bigger R-series bikes. And like the chassis, the bodywork is full-sized, making this new sportsbike the most impressive looking machines in the class.
Complementing the race-bred Deltabox frame is a cast aluminium swinging arm. By keeping unsprung weight low, this high quality swinging arm allows the link-type rear suspension system to operate more efficiently and deliver more responsive handling qualities.
High build quality is evident wherever you look on the new R125, and the front braking system is another example of Yamaha’s commitment to using only high-specification components. As well as ensuring that the unsprung weight is minimised in order to enhance the front and rear suspension performance, the distinctive 10-spoke alloy wheels give the R125 a unique look. The lightweight wheels are fitted with some of the widest rubber in the class, with a 100/80-17 tyre at the front, and a massive 130/70-17 tyre at the rear.
--------SPECIFICATION--------
NAME - YAMAHA R125
TYPE - SPORTS
Engine - Liquid-cooled, 4-stroke, single cylinder, 4-valve, SOHC
Displacement - 124.66 cc
Bore x stroke - 52.0 x 58.6 mm
Compression ratio - 11.2 : 1
Maximum power - 11.0 kW (15 PS) @ 9,000 rpm
Maximum torque - 12.24 Nm (1.25 kg-m) @ 8,000 rpm
Lubrication system - Wet sump
Fuel System - Fuel injection
Clutch type - Wet, multiple-disc coil spring
Ignition system - TCI
Starter system - Electric
Transmission system - Constant mesh, 6-speed
Final transmission - Chain
Fuel tank capacity - 13.8 L
Oil tank capacity - 1.15 L
Chassis - Steel Deltabox
Front suspension system - Telescopic forks
Front travel - 130 mm
Rear suspension system - Swingarm (monocross)
Rear travel - 125 mm
Caster angle - 24.2°
Trail - 86.1 mm
Front brake - Single disc, Ø 292 mm
Rear brake - Single disc, Ø 230 mm
Front tyre - 100/80-17 M/C
Rear tyre - 130/70-17 M/C
Length - 2,015 mm
Width - 660 mm
Height - 970 mm
Seat height - 818 mm
Wheel base - 1,355 mm
Minimum ground clearance - 155 mm
Wet weight - 138 kg
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