BSA Unit A65 Black Diamond Intake & Exhaust Valve Set 68-0663R 68-0665R 1966-72

  • $ 129.95


New USA Made Kibblewhite BSA 650 Unit Twins Black Diamond Intake & Exhaust Valve Set. This is as good as it gets! If your Rebuilding your Top End on your BSA Unit Twin and looking to install the absolute Best Quality parts, then this set is exactly what you need! You won't find a better price or quality on these BSA Black Diamond Valves! Made from One Piece Forgings! Fits all BSA 650 A65 Twins (Lightning, Thunderbolt, Spitfire, Firebird, Etc) from 1966-1972 only. Please refer to your parts catalog for proper fitment.

*****Please check the specifications below to ensure the best fitment! Early Cylinder Heads from approx 1962-1965 used different Diameter Valves!*****



*What is Black Diamond?*
-CNC machined from one-piece forgings of EV8 Stainless Steel. Multi-stage process reduces friction, and provides superior resistance to corrosion and wear.


Intake specs
-Head Diameter: 1.600"
-Stem Diameter: .3112"
-Stem Length: 3.600"


Exhaust Specs
-Head Diameter: 1.410"
-Stem Diameter: .3107"
-Stem Length: 3.555"


•Made in the USA
•O.E.M Part number is 68-0663, 68-0665, V253 or V254