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BSA Engine Parts

BSA Bantam Ball Bearing open

BSA Bantam Ball Bearing open

Ball Bearing open1 7/8"x 7/8"x3/8"
BSA/Triumph Piston B25 & TR25 Std.

BSA/Triumph Piston B25 & TR25 Std.

BSA/Triumph Piston B25 & TR25 Std. Bore: 67mm Piston Clearance 0.12mm or 45thou comp. ratio 9.25:1
BSA/Triumph Piston B25 & TR25 +060

BSA/Triumph Piston B25 & TR25 +060

BSA/Triumph Piston B25 & TR25 +060Bore: 67mm +060 (=68.5mm)Piston Clearance 0.12mm or 45thoucomp. ratio 9.25:1
BSA/Triumph Piston B25 & TR25 +040

BSA/Triumph Piston B25 & TR25 +040

BSA/Triumph Piston B25 & TR25 +040 Bore: 67mm +040 (=68mm) Piston Clearance 0.12mm or 45thou comp. ratio 9.25:1
BSA/Triumph Piston B25 & TR25 +020

BSA/Triumph Piston B25 & TR25 +020

BSA/Triumph Piston B25 & TR25 +020Bore: 67mm +020 (=67.5mm)Piston Clearance 0.12mm or 45thoucomp. ratio 9.25:1
BSA Piston M20 +40. 83.0mm

BSA Piston M20 +40. 83.0mm

BSA Piston M20 +040. 83.0mm Replica complete 82mm +040 (=83mm) Piston Clearance 0.12mm or 45thou
BSA Piston B33/M33 1954-60 +020

BSA Piston B33/M33 1954-60 +020

BSA Piston B33/M33 1954-60 +020 Made in Italy +020=85.5 mm Gudgeon Pin Diameter: 19mm Middle Gudgeon Pin to TOP: 43.5 mm Piston Clearance 0.12mm or 45thou Compression Ratio: 7.5:1 65-1613...
BSA Piston A65 Assembly Std. /Pair

BSA Piston A65 Assembly Std. /Pair

BSA Piston A65 Assembly Std. 9:1 75 mm Made in Far East - good quality Piston rings are Hepolite Price per Pair Piston Clearance 0.12mm or 45thou Genuine Original Hepolite
BSA Piston 85mm B50/Goldstar +40 500cc

BSA Piston 85mm B50/Goldstar +40 500cc

BSA Piston +40 500cc B50/Goldstar85mmPiston Clearance 0.12mm or 45thouCompression 10:1compr. hight: approx. 32.6 mmGudgeon Pin Diameter: 19.00mm
BSA DBD Goldstar Piston 500cc +20

BSA DBD Goldstar Piston 500cc +20

GPM, Slipper 500cc 85.5 mm 9.5:1 Piston Clearance 0.12mm or 45thou
BSA DBD Goldstar Piston 500cc +60

BSA DBD Goldstar Piston 500cc +60

BSA Gold Star Piston +060 500cc GPM Slipper 86.5 mm 9.5:1 Piston Clearance 0.12mm or 45thou Can be used on BSA B50 as a +80 Piston
BSA DBD Gold Star 500cc Piston +40

BSA DBD Gold Star 500cc Piston +40

GPM Slipper Diam. 86 mm 9.5:1 Pin Diameter: 19mm
BSA CB/DB Goldstar 350cc Piston 060

BSA CB/DB Goldstar 350cc Piston 060

BSA CB/DB Goldstar 350cc Piston 06072.5 mmPiston Clearance 0.12mm or 45thou
BSA C15 Piston STD.

BSA C15 Piston STD.

Piston BSA C15 STD. GPM STD= 67mm Piston Clearance 0.12mm or 45thou Compression Height: 36.3mm Compression 7.5:1
BSA C15 Piston +040

BSA C15 Piston +040

Piston BSA C15 +040 STD=67mm +040= 68mm Piston Clearance 0.12mm or 45thou Compression 7.5:1
BSA C15 Piston +020

BSA C15 Piston +020

Piston BSA C15 +020 with Gudgeon Pin and 2 Circlips Piston Clearance 0.12mm or 45thou Compression: 7.5:1
BSA Bantam D10/14 Piston +60 Hepolite

BSA Bantam D10/14 Piston +60 Hepolite

BSA D10/14 175cc Piston +60 Hepolite Ref 17952 complete STD= 60mm +60= 61.5mm Piston Clearance 0.12mm or 45thou
BSA B50/Goldstar Piston +060

BSA B50/Goldstar Piston +060

BSA B50 Piston 06085.5 mmSlipper Piston Clearance 0.12mm or 45thouCompression 10:1Gudgeon Pin Diameter: 18.9mm
BSA B44 Piston +040. 80mm

BSA B44 Piston +040. 80mm

BSA B44 Piston complete +040 = 80 mm compr. ratio 9.4:1 Made by GPM Middle gudgeon pin to lowest point of piston: 29 mm Middle gudgeon pin to highest point...
BSA B44 Piston +20. 79.5mm

BSA B44 Piston +20. 79.5mm

+20 = 79.5 mm GPM, cpl. compr. ratio 9.4:1 Made by GPM Middle gudgeon pin to lowest point of piston: 29 mm Middle gudgeon pin to highest point of piston:...