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BSA Piston +40= 86 mm  OHV 1947-52 . B33, B34, B34 Gold Star 8.5:1 JP Long Conrod mod. only. Rod number o/e 66-483 85mm std Please look at all pictures including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou  

JAP Twin Piston +020 / Pair including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 1000cc OHV
Model KTO
KTOR
STD = 85.7 mm x 85 mm Bore and Stroke +020
Gudgeon Pin: 13/16=20,6mm
Compression Height: 32.45mm
JP

BSA Piston STD OHV 1947-52 85mm. 1947-1952. = 85mm B33, B34, B34 Gold Star 8.5:1 Long stroke  Models only. 
Conrod number o/e 66-483 85mm std  JP including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 

Norton ES2 Piston +040
complete
GPM/Gandini
STD. 79mm +040 (80.0mm)
gudgeon pin 22.25 mm
Make: Gandini Italy
Compression Height: 35.1mm

Piston Clearance 0.12mm or 45thou including gudgeon Pin, piston rings and circlips

Ariel 550cc Piston +030  87,15 mm
JP Piston including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou  

Triumph T20 Piston Std 9-1 C.P.172 E3958.E3959.E3960.E3961 E1750.E1767 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

BSA GPM A65 Piston Pair STD 7.5-1
Compression High: 37mm
Gudgeon Pin DM: 19mm including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per pair  

BSA A65 Piston +020 Pair
7.5:1
Gandini
Gudgeon Pin Diameter 19 mm - 3/4"
Compr. hight 37 mm Lightning

020 = 75.5 mm including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per Pair

BSA A65 19233 Piston Pair STD. 75 mm 9:1 Compression including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per Pair Please look at All pictures

BSA A7 Piston Pair +040 7.5-1 Compression Ratio   7,5:1 Compression height    approx. 41 mm Piston length approx.. 68 mm Gudgeon pin Ø  11/16” – approx.. 18 mm Gandini including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per Pair Please view ALL Pictures

BSA Piston A65 Assembly +020
9:1 Made in Far East - good quality Piston rings are Hepolite Price per Pair including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

BSA A50 500cc Piston Pair +020 1963-70 = 66 mm Compression ratio 9:1 Please see measurements in techn. data and last picture Complete incl. Gudgeon pin, piston rings and circlips Piston Clearance 0.12mm or 45thou price per pair

BSA B31 Piston Complete Std. 71 mm Diameter more measurements see last pict. including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

BSA B31 Piston complete +080 STD = 71 mm +080 = 73 mm more meas. see last pict. including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

Ariel 550cc Piston +040  87,15 mm
JP Pistonincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thou

BSA A65 19233 Piston Pair +060 19729:1 CompressionWeight 1 piston incl. Rings and Clips and gudgeon pin  470 gincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per PairPlease look at ALL pictures 

Ajs/Matchless 605cc Pistons Pair Modle 31. G12.CS.G12CSR. Monarch. 060 1960 -66 models including gudgeon Pin, piston rings and circlips

STD = 72 mm+1.5mmm = 73.50mm.
8.5 to 1.
Bore  at 0.12mm or 0.0045".
Make JP. price per pair 2.03125” compression height

AJS/Matchless Piston 592cc OHV Mod. 30/G11 1956-58 +060 = 73,5 mm
CR 7.5:1

JP Piston including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou price per pair please see last pict.

AJS/Matchless Piston STD. 500ccm = 82,55 mmAJS 18S. Matchless G80SC.R. 7.3:1 Gudgeon Pin: 7/8" - 22mmincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPlease look at all pictures 

BSA A65 Piston 060 Pair 9:1 76,5
GPMLightning

Gudgeon Pin Diameter 19 mm - 3/4"
Compr. hight 37 mm

060 = 76.5 mmWeight one piston incl. rings, pin: 425 gincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per PairPlease look at all pictures

BSA B31 Piston Complete +040 71 mm Diameter = STD +040 = 72 mm more measurements see last pict. including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou  

Norton ES2 Piston +060
complete
GPM/Gandini
M18
STD. 79.0mm +060 (80.5mm)
Gudgeon Pin 22 mm
Compression Height: 35.1 mm
Length gudgeon Pin is 66 mm

Piston Clearance 0.12mm or 45thou
including gudgeon Pin, piston rings and circlips

Bearing.
Gearbox Layshaft.
Brough Superior.
Norton. Ariel. R117

OD: 40mm
ID: 17 mm
W: 12 mm
Made in England

Rubber Cable Tie 110mm long Ignition Rubber cable Clip
 

Ariel/BSA/Norton Ball Race
OD: 2 1/4" - 57.2mm
ID: 1" -25.4mm
W: 5/8" -16mm
LJ1JC3 RHP

i.e. BSA A7/A10 7" Rear Full width hub,
bearing that goes in the rear sprocket 1956
B31,B33, A7, A10 1956 - front Wheel full width hub, Ariel type
B31,B33, A7, A10 1956 - rear Wheel for hub and sprocket

Ariel 1956-57 all Mod. all wheels