2014 Yamaha YZF-R 125

Make Model	Yamaha YZF-R 125
Year	2014
Engine	Four stroke, single cylinder, SOHC, 4 valve
Capacity	124 cc / 7.6 cu-in
Bore x Stroke	52 x 58.6 mm
Cooling System	Liquid cooled
Compression Ratio	11.2:1
Induction	Fuel Injection
Oil Capacity	1.20 liters / 0.08 quarts)
Lubrication	Wet sump
Ignition	TCI
Starting	Electric
Max Power	11 kW / 15 hp @ 9000 rpm
Max Torque	12.4 Nm / 1.25 kg-m @ 8000 rpm
Clutch	Wet Multiple-disc
Transmission	6 Speed
Final Drive	Chain
Frame	Delta box
Front Suspension	Upside-down telescopic fork, Ø 41 mm
Front Wheel Travel	130 mm / 5.1 in
Rear Suspension	Linked monoshock with spring preload adjustment
Rear Wheel Travel	118 mm / 4.6 in
Front Brakes	Single 292mm disc
Rear Brakes	Single 230mm disc
Front Tyre	110/80 -17
Rear Tyre	130/70 -17
Caster	26°
Trail	98 mm
Dimension	Height 1065 mm / 41.9 in Length 1955 mm / 76.9 in Width 680 mm / 26.7 in
Wheelbase	1355 mm / 53.3 inc
Seat Height	825 mm / 32.4 in
Wet Weight	140 kg / 308.5 lbs
Fuel Capacity	11.5 Litres / 3.0 gal

Yamaha has revamped its latest YZF-R125 to look and feel more like a scaled down MotoGP racer. The company, a leader in the sports 125cc market for a number of years, constantly hones its tiny zappers, but always within the power limits established by national authorities around the world.

In Europe, for example, 125cc bikes of any kind are not allowed to have more than 15 horsepower. But within this power limit, Yamaha has created a lovely little screamer that’s dressed in a radically redesigned fairing inspired by that of the celebrated YZF-R6 Supersport racer. Double headlights flank the air scoop, which is now located on the nose of the fairing for maximum efficiency.

The engine has been upgraded, too. Given the power limits, the lively, liquid-cooled sohc four valver has been designed with undersquare measurements (52mm bore x 58.6mm stroke) to obtain the fattest possible torque curve at mid rpm. Additionally, the undersquare measurements allow a very clean combustion chamber design and a flat piston top, along with a compression ratio of 11.2:1. This ensures good midrange response, thanks also to the completely renewed integrated injection-ignition system, which further aids fuel efficiency.

Yamaha’s YZF-R125 delivers its “legal” peak of 15 horsepower at 9,000 rpm, and torque reaches 9.2 pound-feet at 8,000. As for the revised chassis, it now sports a 41mm inverted fork, which is set at 25 degrees of rake and with 3.5 inches of trail. The front disc brake is also new, now featuring a single 292mm rotor and a radial-mount caliper. Belted cross-ply tires that measure 110/80-17 in front and 130/70-17 in back are more than adequate for serious riding. Other vitals include a 53.0-in. wheelbase, a seat height of 32.5 in., and a claimed wet weight—with all liquids in place and 3.0-gallon tank full of gasoline—of only 308.5 lb.