2021 Yamaha YZ125X

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The perfect step up to a full-size Cross Country machine, this lightweight 2-stroke is the pinnacle of performance on the race course.


Two-Stroke Agility: Tuned for Cross Country and Hare Scrambles Racing
The YZ125X is optimized for the unique demands of Hare Scrambles and GNCC® racing. The YPVS™-equipped 125cc two-stroke engine is combined with a six-speed transmission for the ultimate cross country power plant.

Lightweight Aluminum Frame
The ultra-lightweight YZ125-spec frame features a carefully engineered combination of aluminum castings, forgings, and extrusions for the perfect balance of rigidity and flex. The industry-leading fully adjustable, the KYB® speed-sensitive spring-type suspension is tested and tuned specifically for the needs of cross-country racers.

GNCC-Specific Features
18-inch rear wheel, sealed O-ring chain, off-road focused tires, and suspension settings, a standard side stand and fuel tank petcock with reserve position are perfect for GNCC racing.

Industry-Leading Suspension
Yamaha’s renowned spring-type KYB® fork is matched with a long-travel shock, both fully adjustable and tuned for the demands of cross country racing.

Racing Style and Ergonomics
The YZ125X carries the racing heritage of the YZ motocrosser with its aggressive styling from the front fender to the rear brake protector. Complete with an aluminum tapered handlebar, YZ-F-style footpegs, gripper seat, and Dunlop® tires, the YZ125X is ready to race out of the crate.

Engine Type: 125cc liquid-cooled 2-stroke; reed-valve inducted
Bore x Stroke: 54.0 mm x 54.5 mm
Compression Ratio: 7.4~8.8:1
Fuel Delivery: Carburetor
Transmission: 6-speed; multiplate wet clutch
Final Drive: Chain
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