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YZ125SP

Celebrate seven decades of motorsports excellence with this striking 70th Anniversary Edition. Designed to commemorate the 1955 birth of Yamaha Motor Company, iconic white and red Yamaha speed block livery combines with the YZ125's sleek, aggressive bodywork for standout style.

Mix in the hard-hitting power of its 125cc YPVS-equipped two-stroke engine and intuitive control from its lightweight chassis and class-leading KYB® suspension, and the YZ125 70th Anniversary Edition is a bike designed to compete straight out of the box.

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Features

Powerful Two-Stroke YZ125 Engine
Powerful Two-Stroke YZ125 Engine

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

Close-ratio transmission
Close-ratio transmission

Close-ratio six-speed transmission has wider transmission gear tooth width and optimised gear ratios for maximum performance.

Keihin Powerjet carburettor
Keihin Powerjet carburettor

High-precision Hitachi Astemo® Keihin PWK38S carburetor features a power jet, throttle position sensor and 3D-map-controlled CDI unit for precise ignition timing. The result is clean, crisp throttle response, superior rideability and excellent over-rev character.

Best-in-class KYB suspension
Best-in-class KYB suspension

Yamaha’s SSS (Speed Sensitive System) KYB front forks are widely regarded as being amongst the best designs available on a production motocross bike, and the YZ125 features low speed damping settings on both the front and rear suspension systems for better handling characteristics. Tool-free compression adjustment now features on top of each fork leg.

Lightweight frame
Lightweight frame

Race-proven, highly developed aluminium semi-double cradle frame is engineered to provide just the right amount of strength and flex for the perfect balance of stability and cornering performance. Removable aluminium rear subframe is constructed of square-section tubing for reduced weight.

Powerful braking system
Powerful braking system

The high performance braking system features a 270mm front rotor, 240mm rear rotor, large front pistons and rigid calipers, all combining to provide exceptional braking power and feel.

Race-developed ergonomics
Race-developed ergonomics

Complete with an aluminium handlebar, two-position adjustable handlebar clamp, lightweight bar pad, wide footpegs, gripper seat, adjustable clutch lever with works-style cable adjuster and lightweight rear sprocket design, the YZ125 is competition-ready straight out of the crate.

Technical Specifications

YZ125SP
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
8.2 - 10.1 : 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)
2135
Width (mm)
825
Height (mm)
1295
Seat Height (mm)
980
Wheelbase (mm)
1445
Ground Clearance (mm)
365
Wet Weight (kg)
96
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
100/90-19 57M Tube type
showroom_folder				yz125sp
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|8.2 - 10.1 : 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|100/90-19 57M Tube type
showroom_dimensions_data	Length (mm)|2135;Width (mm)|825;Height (mm)|1295;Seat Height (mm)|980;Wheelbase (mm)|1445;Ground Clearance (mm)|365;Wet Weight (kg)|96 

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content_description1		

Celebrate seven decades of motorsports excellence with this striking 70th Anniversary Edition. Designed to commemorate the 1955 birth of Yamaha Motor Company, iconic white and red Yamaha speed block livery combines with the YZ125's sleek, aggressive bodywork for standout style.

Mix in the hard-hitting power of its 125cc YPVS-equipped two-stroke engine and intuitive control from its lightweight chassis and class-leading KYB® suspension, and the YZ125 70th Anniversary Edition is a bike designed to compete straight out of the box.

content_description2

Engine Type|Liquid-cooled, 2-stroke, reed-valve;Displacement (cc)|125;Bore x Stroke (mm)|54.0 x 54.5;Compression Ratio|8.2 - 10.1 : 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|100/90-19 57M Tube type#####Length (mm)|2135;Width (mm)|825;Height (mm)|1295;Seat Height (mm)|980;Wheelbase (mm)|1445;Ground Clearance (mm)|365;Wet Weight (kg)|96

content_description3 content_allow_reviews n content_author content_external_ref1 content_external_ref2 content_external_ref3 showroom-Yamaha-YZ125SP content_compatibility_code n content_external_src content_fullpath Yamaha YZ125SP content_level 2 content_id 3037 content_module content_name YZ125SP 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 YZ125SP page_id 3037 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