Yamaha YZ125X - 2018 Specifications and Reviews

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General information

CategoryEnduro / offroad
ModelYamaha YZ125X
Year2018
 
 

Engine and Transmission Specifications

ClutchO-ring chain
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
Lubrication systemPremix
IgnitionCDI
Fuel systemCarburettor. Mikuni TMX 38
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Compression7.1:1
Engine detailsReed-valve-inducted
Engine typeSingle cylinder, two-stroke
Capacity:124.00 ccm (7.57 cubic inches)
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter245 mm (9.6 inches)
Rear brakesSingle disc. Hydraulic.
Front brakes diameter270 mm (10.6 inches)
Front brakesSingle disc. Hydraulic.
Rear tyre100/90-18
Front tyre80/100-21
Rear wheel travel315 mm (12.4 inches)
Rear SuspensionFully adjustable single shock
Front wheel travel300 mm (11.8 inches)
Front SuspensionSpeed-sensitive system inverted fork
Trail109 mm (4.3 inches)
Rake (fork angle)26.0°
Frame typeSemi-double cradle aluminium frame

Physical measures and capacities

Oil capacity0.70 litres (0.05 quarts)
Fuel capacity8.00 litres (2.11 gallons)
Wheelbase1,443 mm (56.8 inches)
Weight incl. oil, gas, etc93.5 kg (206.1 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
StarterKick
Color optionsBlue/White

Performance Profile & Rider Fit

Best For

Track55%
City10%
Cornering85%
Daily Riding10%
Touring10%
Passenger5%

Rider Profile

Best ForBest suited to intermediate-to-advanced off-road riders who understand 2-stroke power delivery and clutch management.
PurposeBuilt as a cross-country/off-road competition machine, essentially a trail-tuned YZ125 motocrosser with wider-ratio gearing and off-road suspension settings.
Rider FitVery light wet weight and tall seat height demand an active, fit rider comfortable standing and shifting body weight through rough terrain.
CharacterRaw, high-strung, and reward-driven, this bike delivers sharp, punchy 2-stroke power and razor-sharp agility for riders who like to work the bike hard.
Not Ideal ForNot for riders seeking comfort, highway capability, passenger accommodation, or a low-maintenance, easy-going ride.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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