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JAP Single Cylinder SV Piston +060 JP
STD= 85.725mm including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 500cc= Model K
85.7mm x 85

550cc = Model L
85.7mm x 95

600cc= Model U
85.7mm x 104

Gudgeon Pin: 13/16" - 20.7mm
Compression Height: 1 5/8" - 41.3mm
Piston Length: 3 1/4" - 82.5mm

Triumph 500cc T100T Piston Pair to be fitted after 1967 Made in England including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per pair

Triumph T20s Tiger Cub. Piston 9:1 STD 63,00mm Piston clearance 0,12 mm including gudgeon pin, circlips and piston rings

Triumph T100T Piston 500cc  +060 Pair including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Made in England Price per pair

BSA Bantam D7 / D10 175cc Piston +060 1958/66 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Made in England

BSA GPM A65 Piston Pair +060 7.5-1
Compression High: 37mm
Kolbenbolzen DM: 19mm including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou price per pair

BSA GPM A65 Piston Pair +040 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

AJS/Matchless JP Pistons 500cc Twin
-1955 +060

Bore: 66mm +060(=67.5mm) including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou
JP
Compression Ratio  7:1
Price per Pair

AJS/Matchless JP Pistons 500cc Twin
-1955 Std.

Bore: 66mm including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou
JP
Compression: 7:1
Price per Pair

Bsa Sloper Piston. 500cc. 1925-31 +060 81.5 mm

Measurements see last pict. gudgeon pin 16 mm

S25,S26,S27,S28,S29,S30-
9,S31-7 493cc ,SV 1925-31 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

Bsa Sloper Piston. 500cc. 1925-31 +040=DM 81 mm
Measurements see last pict. - please look at all pictures gudgeon pin 15,87 mm  5/8"

S25,S26,S27,S28,S29,S30- 9,S31-7 493cc ,SV 1925-31 Piston Clearance 0.12mm or 45thou

JAP Twin Piston +060 / 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 +060
Gudgeon Pin: 13/16=20,6mm
Compression Height: 32.45mm
JP Price per Pair

JAP Single Cylinder Piston +020 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 500cc OHV
Model
KO
KOR
STD = 85.7 mm x 85 mm Bore and Stroke +020
Gudgeon Pin: 13/16=20,6mm
Compression Height: 32.45mm
JP

JAP Single Piston +060 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou 500cc OHV
Model KTO
KTOR
STD = 85.7 mm x 85 mm Bore and Stroke +060
Gudgeon Pin: 13/16=20,6mm
Compression Height: 32.45mm
JP

Norton Dominator Piston Pair +040 500cc
bore 67,00mm

Gudgeon Pin diameter: 17.5 mm
Middle Gudgeon Pin-Top approx. 40 mm Gandini including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per pair

Norton Commando Pistons + 060 Pair  850cc with Hepolite Piston Rings including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou price per pair

Piston assembly 750 Norton +040
L/H & R/H
Price per Pair
Diameter: 74mm

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

Norton Dominator Piston Pair +060 500cc
Bore 67.5mm

Gudgeon Pin diameter: 17.5 mm
Middle Gudgeon Pin-Top approx. 40 mm

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

BSA Hepworth  A65 19233.8mm Piston Pair 1972 9:1 Compression Original Hepworth 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 +060, 1950 -61
2 Cylinder, 500cc, O.H.V.
Compression Ratio 6.6:1 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per Pair  

BSA A7 Piston Pair +040, 1950 -61
JP Pistons
2 Cylinder, 500cc, O.H.V.
Compression Ratio 6.6:1 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou Price per Pair

BSA B31 Piston Complete +030   71 mm Diameter = STD +030 = 71.75 mm more measurements see last pict. including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

BSA B31 Piston Complete +020 71 mm Diameter = STD +020 = 71.5 mm more measurements see last pict. including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

Triumph T20 Piston +060 7:1CR

STD= 63mm +060 = 64.5mm C.P.141 E3358.E656.E3048.E3387E1750.E1767 12581 including gudgeon Pin, piston rings and circlips Piston Clearance 0.12mm or 45thou

Norton Dominator Piston/Pair GPM 600/650cc +060= 69.5mm
middle gudgeon pin-top: 40 mm
Gudgeon pin diameter: 17. 5 mm - 11/16"


at 600 ccm: 7,4:1 compression ratio at 650 ccm 8,25:1
Mod. 77 v- 1956-58
Mod. 99 1956-62
Nomad 1968
650 1960-63
Mod. 99SS 1961-62
650 SS 1961-70
Piston Clearance 0.12mm or 45thouincluding gudgeon Pin, piston rings and circlipsPrice per pairPlease look at all pictures