BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams Beta X-Trainer 300 2017

Beta X-Trainer 300 2017

With removable plastic inside tool tray

Barcode: 8059347043951

that the original championship Super-M utilizes

7mm Exhaust Duration (@1mm): 248 degrees Lobe Center: 104 degrees Valve Lash:

BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams Beta X-Trainer 300 2017Boyesen Power Reeds 640 Improves throttle response and fuel economy, enhances acceleration and top end speed Revolutionary dual stage reeds outperform and outlast any stock reed Yamaha IT250 1977 1983 IT400 1979 IT425 1980 IT465 1981 1982 IT490 1983 1984 YZ250 1978 1989 YZ250WR 1989 YZ400 1979 YZ465 1980 1981 YZ490 1982 1983 Part No. 05 640 (oro2u. com)