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2021 Yamaha YZ125
2021 Yamaha YZ125

Specs

General Information

Manufacturer
Yamaha
Yamaha
Model Year
2021
2021
Model
YZ125
YZ125
Model Code
YZ125M2
YZ125M2
Color
Team Yamaha Blue
Team Yamaha Blue

Brakes/Wheels/Tires

Brakes

Front - Hydraulic disc, 270 mm

Rear - Hydraulic disc, 245 mm

Front - Hydraulic disc, 270 mm

Rear - Hydraulic disc, 245 mm

Tires

Front - 80 / 100-21 Dunlop® MX52

Rear - 100 / 90-19 Dunlop® MX52

Front - 80 / 100-21 Dunlop® MX52

Rear - 100 / 90-19 Dunlop® MX52

Dimensions

Length
84.1 in.
84.1 in.
Height
51 in.
51 in.
Width
32.6 in.
32.6 in.
Weight
Wet - 207 lb.
Wet - 207 lb.
Ground Clearance
14.4 in.
14.4 in.
Wheelbase
56.8 in.
56.8 in.
Seat Height
38.4 in.
38.4 in.

Drivetrain

Transmission
Constant-mesh 6-speed
Constant-mesh 6-speed
Final Drive
Chain
Chain

Engine

Engine
2-stroke, Reed-valve inducted
2-stroke, Reed-valve inducted
Cooling
Liquid
Liquid
Displacement
125 cc
125 cc
Bore x Stroke
54 x 54.5 mm
54 x 54.5 mm
Compression Ratio
8.6 ~ 10.7:1
8.6 ~ 10.7:1
Clutch
Multi-plate wet
Multi-plate wet
Carburetion
Mikuni® TMX 38
Mikuni® TMX 38
Ignition
CDI
CDI
Fuel Capacity
2.1 gal.
2.1 gal.

Operational

Front Suspension

KYB® Speed-Sensitive System inverted fork; fully adjustable

Travel - 11.8 in.

KYB® Speed-Sensitive System inverted fork; fully adjustable

Travel - 11.8 in.

Rear Suspension

KYB® single shock; fully adjustable

Travel - 12.4 in.

KYB® single shock; fully adjustable

Travel - 12.4 in.

Rake
Caster angle - 26°
Caster angle - 26°
Trail
4.3 in.
4.3 in.

Other

Warranty
30 Day (Limited Factory)
30 Day (Limited Factory)

Features

Chassis / Suspension

  • 270 MM FRONT BRAKE: Large 270 mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
  • ALUMINUM FRAME: A carefully engineered, advanced aluminum frame and swingarm give the YZ125 the best handling in its class.
  • LIGHTWEIGHT SUBFRAME: Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
  • INDUSTRY-LEADING FORK: The Speed-Sensitive System 48mm KYB® fork and the damping force are controlled by the piston speed for a smoother, more precise ride with 11.8 inches of travel.
  • ADVANCED KYB® SHOCK: Rear, fully adjustable KYB® shock features reduced-friction Kashima Coat™ internals, 12.4 inches of travel, separate adjusters for high- and low-speed compression damping and a full lock oil rebound system for increased comfort. All add up for fantastic rear wheel control and a sweet ride.
  • RACE-READY TIRES: Premium Dunlop® knobbies offer race-spec traction and wear.

Engine

  • TWO-STROKE POWER: Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio.
  • RACE-DEVELOPED INTAKE: Reed-valve spacer improves acceleration across the entire powerband.
  • YAMAHA POWER VALVE SYSTEM: Patented YPVS™ combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
  • CLOSE-RATIO TRANSMISSION: Six-speed, close-ratio transmission optimizes gear ratios for maximum performance.
  • DIGITAL IGNITION: Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
  • HIGH-CAPACITY RADIATOR: Large-capacity radiator features a 10-row core with four louvers to deliver maximum cooling efficiency at all performance levels.

Other Features

  • RACE-READY FEATURES: Complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster, the YZ125 is ready to race out of the crate.

Top Features

  • MODERN STYLING: The front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs offer modern, aggressive styling —just like the 4-strokes.
  • LIGHTWEIGHT FRAME: A light aluminum frame houses a patented YPVS™-equipped ripper of an engine for an awesome power-to-weight ratio.
  • RACE-READY FEATURES: Complete with an aluminum handlebar, titanium foot pegs and gripper seat, the YZ125 is ready to race out of the crate.
  • IDEAL BALANCE: A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class.
  • RIDER-FRIENDLY CHASSIS: Ultra light weight means nimble handling and less fatigue.
  • 270 MM FRONT BRAKE: The large 270 mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.

Chassis / Suspension

  • 270 MM FRONT BRAKE: Large 270 mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.
  • ALUMINUM FRAME: A carefully engineered, advanced aluminum frame and swingarm give the YZ125 the best handling in its class.
  • LIGHTWEIGHT SUBFRAME: Removable aluminum rear subframe is constructed of square-section tubing for reduced weight.
  • INDUSTRY-LEADING FORK: The Speed-Sensitive System 48mm KYB® fork and the damping force are controlled by the piston speed for a smoother, more precise ride with 11.8 inches of travel.
  • ADVANCED KYB® SHOCK: Rear, fully adjustable KYB® shock features reduced-friction Kashima Coat™ internals, 12.4 inches of travel, separate adjusters for high- and low-speed compression damping and a full lock oil rebound system for increased comfort. All add up for fantastic rear wheel control and a sweet ride.
  • RACE-READY TIRES: Premium Dunlop® knobbies offer race-spec traction and wear.

Engine

  • TWO-STROKE POWER: Amazingly compact 124cc reed-valve-inducted two-stroke helps produce an awesome power-to-weight ratio.
  • RACE-DEVELOPED INTAKE: Reed-valve spacer improves acceleration across the entire powerband.
  • YAMAHA POWER VALVE SYSTEM: Patented YPVS™ combines crisp, hard-hitting bottom-end acceleration with strong midrange and eye-opening top-end.
  • CLOSE-RATIO TRANSMISSION: Six-speed, close-ratio transmission optimizes gear ratios for maximum performance.
  • DIGITAL IGNITION: Digital CDI system delivers precise spark and monitors engine speed to ensure optimal timing for faster, stronger response during hard acceleration.
  • HIGH-CAPACITY RADIATOR: Large-capacity radiator features a 10-row core with four louvers to deliver maximum cooling efficiency at all performance levels.

Other Features

  • RACE-READY FEATURES: Complete with an aluminum handlebar, 2-position adjustable handlebar clamp, wide foot pegs, gripper seat and adjustable clutch lever with works-style cable adjuster, the YZ125 is ready to race out of the crate.

Top Features

  • MODERN STYLING: The front fender, front number plate, radiator shrouds, side number plates, air box, rear fender, fork guards, as well as the rear brake disc protector, rear brake caliper protector and wider foot pegs offer modern, aggressive styling —just like the 4-strokes.
  • LIGHTWEIGHT FRAME: A light aluminum frame houses a patented YPVS™-equipped ripper of an engine for an awesome power-to-weight ratio.
  • RACE-READY FEATURES: Complete with an aluminum handlebar, titanium foot pegs and gripper seat, the YZ125 is ready to race out of the crate.
  • IDEAL BALANCE: A pure motocross machine, the light and nimble YZ125 is the perfect choice for riders stepping up from the 85cc class.
  • RIDER-FRIENDLY CHASSIS: Ultra light weight means nimble handling and less fatigue.
  • 270 MM FRONT BRAKE: The large 270 mm front disc brake coupled with high-performance pad material offers outstanding machine control and performance, plus exceptional stopping power and controllability.