SR Triumph Line blank piston
                 These castings were designed from the 
                  original piston of a 2 hp "SR" R&V engine. Extra 
                  stock was allowed on the outside to accommodate larger bore 
                  engines. It can be machined to a bore ranging from 4.000 inches 
                  to 4.312 inches. The original pin height of the R&V is 2 
                  5/16 from bottom, stock is available to machine pin bore higher 
                  or lower by 5/16 inches. A drawing is available of the casting, 
                  and questions are welcomed. Priced at $85.00 USD, plus $12.50 
                  shipping, within the lower 48 states. Outside the USA, actual 
                  shipping.