2022 Yamaha YZ125X
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 mated to a six-speed transmission for the ultimate cross-country powerplant.
Lightweight aluminium frame
Ultra-lightweight YZ125-spec frame features a carefully engineered combination of aluminium castings, forgings and extrusions for the perfect balance of rigidity and flex for competition-ready handling character and composure.
Industry-leading suspension
Yamaha’s renowned KYB® speed sensitive spring-type front fork is matched with a high-performance KYB® long-travel rear shock, both fully adjustable and tuned for the demands of cross-country racing.
GNCC®-specific features
Cross country focused suspension setup and Dunlop® Geomax AT81 tyres, 45,74 cm rear wheel, sealed O-ring chain, a standard side stand and fuel tank petcock with reserve position are perfect for GNCC® 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 aluminium tapered handlebar, YZ-F-style foot pegs, gripper seat and Dunlop® Geomax AT81 tyres, the YZ125X is competition-ready straight out of the crate.
The new high-performance braking system
The newly designed front and rear brake setup offer exceptional braking power and feel while reducing unsprung weight.
GNCC®-tuned YZ125 Power
Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilizes a revised compression ratio, Yamaha Power Valve System (YPVS™) timing and a model-specific CDI unit—all focused on creating broad power delivery that suits off-road terrain and a wide range of rider skill levels.
Revised power valve
The YZ125X features the patented Yamaha Power Valve System—with broader opening timing compared to the motocross version for smoother power—to create a smooth balance of power across the rev range.
Narrow exhaust pipe
The compact exhaust expansion chamber provides both horizontal and vertical clearance on tight, technical trails while still providing excellent exhaust efficiency.
Racing intake system
Specially designed carbon fibre reed-valve petals improve throttle response and engine performance across the entire rpm range.
Six-speed transmission
Smooth-shifting six-speed transmission ensures proper gearing, from tight woods to wide-open fire roads, optimizing power delivery from the two-stroke powerplant.
YZ125 cooling system
Large-capacity radiator features a large cooling core with protective louvres for maximum cooling efficiency and durability in racing conditions.
