This listing is for ONE R/H 28mm carb.  Jetted versions for specific apps available for a little more money, also jetted PAIRS.  Please inquire.

The 'EVOLUTION' carb by Wassell, imported from Britain.  Direct replacement for Amal 928 Concentric Premier.

Jetting as supplied:  pilot jet 17, needle jet 106, slide #3, main jet 180.

The carburetor has all the advancements of the Amal 'Premier':  removable pilot jet, hard-anodized billet slide and adjustable float.

Passivated surface finish coating is not as perfect as I'd prefer, uneven in spots, but it is what it is.  If you're building a rider it will work better than fine, and the price can't be beat.  

I will answer questions promptly, good luck and thanks for looking.