Description
Features:
- Dual stage reeds
- Minor change gives major H.P. improvements
- Faster opening and closing
- Greater low pressure (Low-throttle) response
- Greater velocity and flow area
- Longer overall life
- No engine damage if broken
Fitment
Yamaha It250 1977
Yamaha It250 1978
Yamaha It250 1979
Yamaha It250 1980
Yamaha It250 1981
Yamaha It250 1982
Yamaha It250 1983
Yamaha It400 1979
Yamaha It425 1980
Yamaha It465 1981
Yamaha It465 1982
Yamaha It490 1983
Yamaha It490 1984
Yamaha YZ250 1978
Yamaha YZ250 1979
Yamaha YZ250 1980
Yamaha YZ250 1981
Yamaha YZ250 1982
Yamaha YZ250 1989
Yamaha YZ465 1980
Yamaha YZ465 1981
Yamaha YZ490 1982
Yamaha YZ490 1983
