The choice of future champions. Right now the YZ125 is the bike of choice for future champions. The YZ125’s super slim bodywork, agile high speci cation chassis and at seat allow you to shift weight quickly for total control – and with Yamaha’s most powerful 125cc production engine, high e ciency braking system and state-of-the-art suspension, this bike is destined for the victorYZone! When you’re aiming for the top you need the right bike that can deliver the performance you need to show you’re a winner. The YZ125’s engine features a YPVS for increased useability over a wider rpm range – and with its Keihin powerjet carburettor and slick shifting 6-speed transmission, the best-ever YZ125 gives tomorrow’s professional riders the winning performance they need to make their name.
And if you’re really serious about making it to the top, Yamaha’s highly successful YZ bLU cRU FIM Europe Cup program is the way to go. It’s where tomorrow’s stars get a chance to qualify for the bLU cRU Europe Cup SuperFinale, and it’s the place where winning riders can take their rst steps towards a professional career The choice of future champions. Yamaha has been building 2-stroke motocross bikes for the past 50 years – and has been an equally long racing history. It is this unrivalled experience that has enabled the company to develop the latest YZ125 – a bike that is built to take you into the victorYZone! Featuring lightweight race-bred engine internals and bene tting from Yamaha’s famous torque-boosting YPVS (Yamaha Power Valve System), the YZ125 develops hard-hitting power that keeps you way out front. The high-e ciency air intake ensures optimum performance and instant throttle response – and the slick shifting close-ratio 6-speed transmission helps you to shave precious seconds o your lap times. Its sharp looking ultra slim bodywork gives you a high degree of controllability on the ground and in the air – and the at seat and race-developed ergonomics allow you to move easily around the bike when braking and accelerating hard. The YZ125 is in it to win it – now just add your ability and prepare to enter the victorYZone!
Most powerful YZ125 engine
The high-tech 125cc 2-stroke engine is the most powerful unit ever used on the YZ125. Equipped with Yamaha’s famous YPVS that gives instant response and excellent useability across the rpm range – and featuring lightweight race-bred internals – it’s destined to take you to the victorYZone!
Ultra-slim bodywork
The latest generation bodywork is ultraslim, with the area between the rider’s knees the narrowest it’s ever been on a YZ125 – and this athletic and modern design underlines the bike’s lightness and compactness. These slim dimensions give a high level of rider mobility and reinforce this lightweight racer’s feeling of agility.
Keihin Powerjet carburettor
The YZ125 is equipped with a Keihin PWK 38,1mm carburettor featuring a solenoid controlled powerjet for even more explosive performance – giving a real advantage out of the gate and when accelerating hard out of corners. A TPS (Throttle Position Sensor) and 3D map controlled CDI ensure optimized ignition timing, while the V-Force reed valve assembly ensures optimum intake e ciency at all engine speeds.
Smooth shifting 6-speed transmission
Every second counts, and for reduced lap times the YZ125 runs with a supersmooth shifting 6-speed transmission that enables you to accelerate e ciently and stay out in front. Transmission ratios have been carefully chosen by Yamaha’s engineers to maximize race performance and power output in all conditions.
High e ciency air intake
The complete intake system has been developed to provide the smoothest possible ow of air into the 38.1mm carburettor for a high level of engine e ciency. Components including the seat base, rear frame and sidepanels are all designed to reduce air resistance for stronger and more useable power output.
Race developed ergonomics
Engine performance is just one element of being competitive – the ability to handle the power e ectively and take total control of the chassis is also vital. A at seat with a low front combined with a slim tank and narrow radiator shrouds make it easy to shift your weight around the bike for increased controllability when braking, accelerating and cornering.
Engine Engine type Liquid-cooled;2-stroke;Single cylinder Displacement 125cc Bore x stroke 54,0 x 54,5 mm Compression ratio 8,2-10,1 : 1 Lubrication system Premix Clutch type Wet;Multiple Disc Ignition system CDI Starter system Kick Transmission system Constant Mesh;6-speed Final transmission Chain Fuel system Fuel system Chassis Frame Semi double cradle Front suspension system Telescopic fork Front travel 300 mm Rear suspension system link suspension;Swingarm Rear travel 315 mm Front brake Hydraulic single disc, Ø270 mm Rear brake Hydraulic single disc, Ø240 mm Front tyre 80/100-21 51M Rear tyre 100/90-19 57M Caster angle 26º Trail 109 mm Dimensions Overall length 2.135 mm Overall width 825 mm Overall height 1.295 mm Seat height 980 mm Wheel base 1.445 mm Minimum ground clearance 365 mm Wet weight (including full oil and fuel tank) 96 kg Fuel tank capacity 7,0 L Oil tank capacity n/a
