TRIUMPH Big bore piston set 650 to 750 STD Aerco UK Made Hastings rings standard Triumph This product is New -

This product is New - Carb fiber spacer Amal 900 PWK Triumph Norton BSA 1/8" thick

Use with stock factory gear

they measure 6 1/4" long x 1 3/4" OD / The top of the seat measures 14" long x 16" wide / the distance of the holes are 9 3/8" & 8 1/8" & 7"

this is rated at 12V 9 Amp Hour 85CCA

010 10 over BSA A65 A50 A10 650 500 67-1431 Large journal

TRIUMPH Big bore piston set 650 to 750 STD Aerco UK Made Hastings rings standard Triumph This product is New -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.