New USA Made Kibblewhite BSA & Triumph Unit Singles Black Diamond Intake & Exhaust Valve Set. This is as good as it gets! If your Rebuilding your Top End on your BSA / Triumph Unit Single and your 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 Black Diamond Valves! Made from One Piece Forgings! Fits the Triumph Unit Singles (TR25W Trophy, T25SS & T25T) from 1968-1971. Also fits BSA 250 Unit Singles (C25, B25 & B25SS) from 1967-1971. Please refer to your parts catalog for proper fitment.
*****Please note that this Valve Set is only Compatible with the Models that are listed abouve! Make sure you have the correct Cylinder Head to suit this Valve!*****
*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.
-Head Diameter: 1.453"/36.91mm
-Stem Diameter: .3105"
-Overall Length: 3.677"
-Head Diameter: 1.315"/33.40mm
-Stem Diameter: .3095"
-Overall Length: 3.645"
•Made in the USA
•O.E.M Part number is 68-0661, 68-0662, 70-7777 or 70-8112