AGILITY, ABILITY, VICTORY
Light weight, but heavy on the fun factor. The 125cc liquid‑cooled 2‑stroke is the most fun you can have on two wheels.
The new YZ125X racer is the perfect entry point to the world of enduro. A lightweight two-stroke that will kickstart your off-road journey and set you on a path to racing success.
Its 125cc, liquid-cooled, two-stroke, reed-valve-inducted engine sports Yamaha’s Power Valve System (YPVS), combined with a six-speed transmission tuned for smooth and controllable power character across the entire rev range.
- Engine TypeLiquid-cooled, 2-stroke, reed-valve
- Displacement (cc)125.0
- Bore x Stroke (mm)54.0 x 54.5
- Compression Ratio7.4 – 8.8 : 1
- Lubrication SystemPremix
- Fuel ManagementCarburettor
- Starter SystemKick
- Fuel Tank Capacity (L)8.0
- Final TransmissionChain
- TransmissionConstant mesh 6-speed
78 in (198.1 cm)
122.2 in (310.5 cm)
62 in (157.5 cm)
83 in (211.5 cm)
11 in (28 cm)
16.2 US GAL (61.3 L) STORAGE CAPACITY
ECO / WORK / NORMAL DRIVING MODES
CONNECTED AS ONE
Innovation meets acceleration. The 449cc liquid‑cooled DOHC 4‑stroke YZ450F sports industry‑leading suspension, electric start and the smartphone power tuner app ‑ so you can dial in your ride.
Yamaha continues to use spring-type forks with refined, speed-sensitive damping to give industry-leading suspension performance straight out of the box.
Yamaha Power Tuner App
Yamaha’s exclusive Power Tuner app puts the flexibility and precision tunability of the GYTR® Power Tuner into your smartphone. Make fueling and ignition timing changes instantly and upload them to the bike via the onboard WiFi system for the ultimate in track-side tuning.
Electric Starter System
Utilizing a compact starter motor and ultra-lightweight lithium battery, the YZ450F brings the convenience of push-button starting to the racetrack, for effortless restarts under pressure, and relaxed riding when the clock isn’t ticking.
Potent Fuel-Injected Engine
A high-compression cylinder head, forged piston, aggressive cam profiles, cylinder geometry and much more work together to give YZ450F riders the best balance of open-class power with controllability.
Advanced Alloy Frame
Yamaha’s bilateral beam aluminum frame features main spars, engine mounts and engine mounting position that centralize mass and provide an ideal balance between cornering feel and straight-line rigidity.