YZ125X at Racecourse Motors

2 stroke power tuned for off road

Based on the legendary 125cc liquid-cooled, reed-valve-inducted YZ two-stroke engine, the YZ125X utilises 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.

YZ based frame

Ultra-lightweight YZ125-spec frame features carefully engineered combination of aluminium castings, forgings and extrusions for the perfect balance of rigidity and flex, with industry-leading fully adjustable, KYB speed sensitive spring-type suspension tested and tuned specifically for the needs of enduro racers.

Cross-country features

The YZ125X comes equipped with off-road focused tyres with an 18” rear wheel, larger rear sprocket, a side stand, sealed O-ring chain and a reserve fuel petcock.

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

Cross-country-spec Dunlop Geomax AT81 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, fully adjustable KYB spring-type fork with 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.

Engine

Engine Type: Liquid cooled, 2-stroke, reed-valve

Displacement (cc): 125.0

Bore x Stroke (mm): 54.0 x 54.5

Compression Ratio: 7.4 - 8.8 : 1

Lubrication System: Premix

Fuel Management: Carburettor

Ignition: CDI

Starter System: Kick

Fuel Tank Capacity (L): 8.0

Final Transmission: Chain

Transmission: Constant mesh 6-speed

Chassis

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, 245mm

Tyres Front: 90/90-21 Dunlop AT81F

Tyres Rear: 110/90-18 Dunlop AT81

Dimensions

Length (mm): 2140

Width (mm): 825

Height (mm): 1285

Seat Height (mm): 955

Wheelbase (mm): 1455

Ground Clearance (mm): 365

Wet Weight (kg): 95