Yamaha YZ125

Yamaha YZ125
Manufacturer	Yamaha
Production	74-08
Engine	125
Sparkplug	B1OEV '77-80 , '81; B9EV '74-75; B9EG '82 , '84 , '85 , '88 , '89-93 , '94-96 , '97-98; BR9EG '83 , '86-87 , '99-04 , '05-08; B10EV '76
Front Tire	3.00-21 '76 , '77-80 , '81 , '82; 2.75-21 '74-75; 80/100-21 '86-87 , '88 , '89-93 , '94-96 , '97-98 , '99-04 , '05-08; 90/90-21 '83 , '84 , '85
Rear Tire	6675 '76 , '77-80 , '81 , '82; 130/80-18 '83 , '84 , '85; 100/90-19 '89-93 , '94-96 , '97-98 , '99-04 , '05-08; 3.50-18 '74-75; 100/100-18 '86-87 , '88
Manuals	Service Manual
	Tech Specs · Brochures · Reviews · Ads · Videos

The Yamaha YZ125 was a two-stroke 125cc motocross dirtbike produced by Yamaha beginning in 1974.

1974 YZ125A

1974 Yamaha YZ125A in Silver

SERIAL # 453-000101 - 007730

1976 YZ125C

1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125C in Yellow
1976 Yamaha YZ125C in Yellow
1976 Yamaha YZ125C in Yellow
1976 Yamaha YZ125C in Yellow
1976 Yamaha YZ125C in Yellow
1976 Yamaha YZ125 in Yellow
1976 Yamaha YZ125 in Yellow

1975

SERIAL # 453-100101 - 101620

1976

SERIAL # 537-000101 - 014044

1977

SERIAL # 1W1-000101 - 015610

1978

SERIAL # 2K6-000101 - 015080

1979

1979 Yamaha YZ125

SERIAL # 2X3-000101 - N/A

1980 YZ125G

1980 Yamaha YZ125-G in Yellow

1980 Yamaha YZ125 in Yellow

SERIAL # 3R3-000101 - ON

1981 YZ125H

1981 Yamaha YZ125H profile

1981 Yamaha YZ125H

Race-developed over a three year period, the YZ125H was the first liquid-cooled Yamaha motocrosser. The alloyed aluminum radiator was mounted to the top triple clamp. Coolant was channeled through the handlebar crown, steering head pipe and the down pipe of the frame. Liquid-cooling helped minimize heat-induced power loss racers experienced during a race.