Kibblewhite Black Diamond Valves NOW AVAILABLE for PRE UNIT TRIUMPH!

Wednesday, Jun 08, 2016

Now in stock from Kibblewhite are brand new valves designed specifically for the Pre Unit Triumph 650.

After a recent failure with a well known English manufacturer’s name brand valves, it became very apparent that there was a need for a high quality 1pc forged stainless valve for the earlier Triumph heads.

Kibblewhite manufactured these valves with their Black Diamond® nitride coating to take any punishment your engine can produce. These are without a doubt the best valves ever made for the Pre Unit and Early Unit Triumph engines.


The intake valve head is 1.500″ and replaces Triumph part number 70-3310, E3310, or Alpha V137.

The exhaust valve head is 1.343″ and replaces Triumph part number 70-2904, E2904, or Alpha V138.

The valves can also be used in Pre Unit Alloy 500 heads as oversize to replace the 1.437″ intake and 1.312″ exhaust.

These are also correct for most early Unit 650 heads up to 1966.

For more information or ordering please see our store here

Our intimate knowledge of camshafts and valve train, as well as our practical
experience of using these in our engines have proudly made us the
number one dealer for Kibblewhite Triumph parts in the USA.  
Kibblewhite, pre unit, racing