TRIUMPH Big bore piston set 650 to 750 STD Aerco UK Made Hastings rings standard

You will get the one brand new set of pistons and rings for your big bore kit. Unit 650 to 750 / The pistons are Aerco, UK Made the rings are Hastings USA Made. The pistons are 75.83mm at the skirt.

This is for 1965 to 1971 650 engines where a big bore kit is installed.

1973 and up are 750 engines and these are not correct for those.