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YZ125X

Based on the celebrated YZ125 motocrosser, the YZ125X is optimised for the unique demands of enduro and cross country racing.

The powerful Yamaha Power Valve System (YPVS) equipped 125cc two-stroke engine is mated to a six-speed transmission for the ultimate cross country powerplant. An ultra-lightweight aluminium semi-double cradle frame is engineered to provide competition-ready handling character and composure.

It comes paired with best-in-class Speed Sensitive KYB® spring-type front fork and high performance KYB® long-travel rear shock, both fully adjustable and tuned for the specific demands of cross country racing.

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Features

2 stroke power tuned for off road
2 stroke power tuned for off road

The YZ125's advanced, liquid-cooled YPVS-equipped 125cc two-stroke engine provides impressive acceleration, thrilling mid- to high-rpm power, along with supreme usability.

YZ based frame
YZ based frame

A race-proven, highly developed aluminium semi-double cradle frame is engineered to provide the perfect balance of rigidity and flex for competition-ready handling character and composure. Removable aluminium rear subframe is constructed of square-section tubing for reduced weight.

Cross-country features
Cross-country features

The YZ125X comes equipped with an 18-inch rear wheel, standard side stand, sealed O-ring chain, reserve fuel petcock, lightweight bar pad, headlight and scraper between the fork's dust and oil seal, all adding up to exceptional off-road performance.

Enduro ergonomics
Enduro ergonomics

A racy ‘gripper’ type seat and narrow fuel tank combine with a tapered aluminium handlebar and adjustable mounts to create greater freedom of movement and more comfortable ergonomics for riders.

Enduro-specific wheels and tyres
Enduro-specific wheels and tyres

Cross-country-spec Dunlop Geomax MX33 tyres front and rear are ready to head straight to the races. An 18-inch rear tyre has a taller sidewall to improve comfort and reduce pinch flats.

Industry-leading KYB fork
Industry-leading KYB fork

Industry-leading, fully adjustable KYB spring-type forks now feature tool-free compression adjustment at the top of each fork leg. The speed sensitive damping uses piston speed to control damping force for super-precise handling and a smooth ride, with minimal wasted stroke or abrupt shocks for the rider – all tuned for the demands of off-road racing.

Technical Specifications

YZ125X
Yamaha YZ Finance Showroom
Engine Type
Liquid-cooled, 2-stroke, reed-valve
Displacement (cc)
125
Bore x Stroke (mm)
54.0 x 54.5
Compression Ratio
7.8 - 10.2 : 1
Lubrication System
Premix
Fuel Management
PWK38S
Ignition
CDI
Starter System
Kick
Fuel Tank Capacity (L)
7
Final Transmission
Chain
Transmission
Constant mesh 6-speed
Length (mm)
2155
Width (mm)
825
Height (mm)
1290
Seat Height (mm)
970
Wheelbase (mm)
1455
Ground Clearance (mm)
355
Wet Weight (kg)
97
Frame Type
Aluminium controlled filled semi double cradle
Suspension Front
Telescopic forks, 300mm travel
Suspension Rear
Swingarm (link suspension), 315mm travel
Brakes Front
Hydraulic single disc, 270mm
Brakes Rear
Hydraulic single disc, 240mm
Tyres Front
80/100-21 51M Tube type
Tyres Rear
110/100-18 64M Tube type
showroom_folder				yz125x
showroom_brand				yamaha
showroom_brand_wufoo		yamaha
showroom_gallery_count		
showroom_technology_data	
showroom_engine_data		Engine Type|Liquid-cooled, 2-stroke, reed-valve;Displacement (cc)|125;Bore x Stroke (mm)|54.0 x 54.5;Compression Ratio|7.8 - 10.2 : 1;Lubrication System|Premix;Fuel Management|PWK38S;Ignition|CDI;Starter System|Kick;Fuel Tank Capacity (L)|7;Final Transmission|Chain;Transmission|Constant mesh 6-speed
showroom_chassis_data		Frame Type|Aluminium controlled filled semi double cradle;Suspension Front|Telescopic forks, 300mm travel;Suspension Rear|Swingarm (link suspension), 315mm travel;Brakes Front|Hydraulic single disc, 270mm;Brakes Rear|Hydraulic single disc, 240mm;Tyres Front|80/100-21 51M Tube type;Tyres Rear|110/100-18 64M Tube type
showroom_dimensions_data	Length (mm)|2155;Width (mm)|825;Height (mm)|1290;Seat Height (mm)|970;Wheelbase (mm)|1455;Ground Clearance (mm)|355;Wet Weight (kg)|97 

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content_description1		

Based on the celebrated YZ125 motocrosser, the YZ125X is optimised for the unique demands of enduro and cross country racing.

The powerful Yamaha Power Valve System (YPVS) equipped 125cc two-stroke engine is mated to a six-speed transmission for the ultimate cross country powerplant. An ultra-lightweight aluminium semi-double cradle frame is engineered to provide competition-ready handling character and composure.

It comes paired with best-in-class Speed Sensitive KYB® spring-type front fork and high performance KYB® long-travel rear shock, both fully adjustable and tuned for the specific demands of cross country racing.

content_description2

Engine Type|Liquid-cooled, 2-stroke, reed-valve;Displacement (cc)|125;Bore x Stroke (mm)|54.0 x 54.5;Compression Ratio|7.8 - 10.2 : 1;Lubrication System|Premix;Fuel Management|PWK38S;Ignition|CDI;Starter System|Kick;Fuel Tank Capacity (L)|7;Final Transmission|Chain;Transmission|Constant mesh 6-speed#####Frame Type|Aluminium controlled filled semi double cradle;Suspension Front|Telescopic forks, 300mm travel;Suspension Rear|Swingarm (link suspension), 315mm travel;Brakes Front|Hydraulic single disc, 270mm;Brakes Rear|Hydraulic single disc, 240mm;Tyres Front|80/100-21 51M Tube type;Tyres Rear|110/100-18 64M Tube type#####Length (mm)|2155;Width (mm)|825;Height (mm)|1290;Seat Height (mm)|970;Wheelbase (mm)|1455;Ground Clearance (mm)|355;Wet Weight (kg)|97

content_description3 content_allow_reviews n content_author content_external_ref1 content_external_ref2 content_external_ref3 showroom-Yamaha-YZ125X content_compatibility_code n content_external_src content_fullpath Yamaha YZ125X content_level 2 content_id 3043 content_module content_name YZ125X content_short_description1 content_short_description2 content_short_description3 content_type_code showroom content_type_id 15 content_type_name Showroom date_posted 0000-00-00 00:00:00 date_updated 2026-05-06 15:22:07 page_editor page_header YZ125X page_id 3043 page_index page_subheader parent_content_id 3033 parent_id 3033 rating 0 reviews 0 sortorder 0 subtitle templatebody showroom_model templatefoot templatehead templatesearch thumb_content_type_id 0 timestamp 2026-05-06 15:22:07