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BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams 7mm Exhaust Duration (@1mm): 248

SKU 18490824084
4.6
BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams 7mm Exhaust Duration (@1mm): 248
BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams 7mm Exhaust Duration (@1mm): 248
BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams 7mm Exhaust Duration (@1mm): 248
BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams 7mm Exhaust Duration (@1mm): 248
Description

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

EN/MX300 19-26

With higher tread heights and larger block widths

High viscosity lubricant

Barcode: 8059347043951

BOYESEN REEDS 640R YZ250 78-82, BR001640 Fuel Tanks & Tank Foams 7mm Exhaust Duration (@1mm): 248Boyesen 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)

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