Excellent Quality USA Made Late BSA 650 Twins STD Bronze Valve Guide Set. This is as good as it gets! Machined right here in the USA using the best quality materials available! We recommend using these guides as the material (Phosphor Bronze) is compatible with alloy cylinder heads and provides a tighter & more accurate tolerance then your standard valve guide! Valve Guides have a Diameter of .501". Fits all BSA A65 Twins (Lightning, Thunderbolt & Firebird Scrambler) from 1971-1972 only. Please refer to your parts catalog for proper fitment.
*****Please note that this set is not compatible with BSA Unit Twins from 1962-1970! Please review the measurements abouve to ensure the best fitment!******
•Made in the USA
•O.E.M Part number is 71-2300