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BSA A7 Piston Pair Std sizeCompression Ratio   7,5:1Compression height    approx. 41 mmPiston length approx.. 68 mmGudgeon pin Ø  11/16” – approx.. 18 mmGandini. JP. Subject to availability.including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per Pair 

BSA A7 Piston Pair +020Compression Ratio   7,5:1Compression height    approx. 41 mmPiston length approx.. 68 mmGudgeon pin Ø  11/16” – approx.. 18 mmGandini or JP subject to Availability.including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per Pair

BSA A7 Piston Pair +040 7.5-1Compression Ratio   7,5:1Compression height    approx. 41 mmPiston length approx.. 68 mmGudgeon pin Ø  11/16” – approx.. 18 mmGandiniincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per PairPlease view ALL Pictures

BSA A7 Piston Pair +060 7.5:1 +060 = 67.5 mmCompression Ratio   7,5:1Compression height    approx. 41 mmPiston length approx. 68 mmGudgeon pin Ø  11/16” – approx.. 18 mmGandini. GPM. Italian. or JP Subject to availability.including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per Pair

Ariel Piston Red Hunter 500cc +020 = 82.3 mm
STD = 81,8 mm
Piston Clearence 0.12mm or 45thou

JP Piston OHV Red Hunter VG, VH, VCH, VHA Compression ratio 6.3:1 incl. piston rings, gudgeon pin and circlips Measurements see last pict. and techn. data please

AJS/Matchless Pistons Twin 1956-   Mod. 20. G9.Clubman STD /Pair
STD = 66 mm
Piston Clearence 0.12mm or 45thou
incl. Gudgeon Pin, Piston Rings and Circlips
JP Piston Made in AustraliaCompr. Ratio 7,8 : 1Price per PairCompression Rings:Thickness 1/8”Depth: 3 mmOil Ring Thickness: 4 mmDepth: 3 mmRing Gap 0,25 mmPlease look at all pictures

 

AJS M18s/G80s Piston 500cc Alloy Head 1950-56 +030Compression Ratio 7.2:1including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPin Diameter 22mmHight 81mmJP Piston Made in AustraliaPlease view ALL pictures

AJS Piston 497 cc. 1956- OHV. 18CS/G80CS +040 = 87 mm

+40 = 87 mm
CR 8.7:1

JP Piston Made in Australiaincluding gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPlease look at all pictures

Triumph Piston T150/T160 750cc +040 /Set Cast AlloyT150V. T160VCompression 9:1
68 mm Diam.
Gudgeon Pin 17 mm 7/16"

Three Pistons with Gudgeon Pins, Piston Rings and Circlips

Piston Clearance 0.12mm or 45thouprice per setPlease look at ALL pictures

BSA Piston B33/M33 1954-60 std.
Made in Italy
STD=85 mm
middle gudgeon pin to Crown 48 mm
Gudgeon Pin 19mm
Piston Clearance 0.12mm or 45thou
for short rod
Compression Ratio: 7.25:1
65-1613 ConrodCmp Hight 43mm+5mm domewith Piston Rings, Circlips and Gudgeon Pin  

BSA Piston B33/M33 1954-60 +020 with piston rings, circlips and gudgeon pin
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: 7.25:1
65-1613 Conrod

BSA Piston B33/M33 1954-60 +40 =86 mm

middle gudgeon pin to Crown 48 mm
Gudgeon Pin Diam. 19 mm
Piston Clearance 0.12mm or 45thou
for short conrod
Compression Ratio 7.25:1
65-1613 Conrodwith Piston Rings, Circlips and Gudgeon PinGandini

BSA Piston B33/M33 1954-60 +060=
86.5 mm
Made in Italy
middle gudgeon pin to Crown 48 mm
Piston Clearance 0.12mm or 45thou
for short conrod
Compression Ratio: 7.5:1
65-1613 Conrod3/4 pinwith piston rings, circlips and gudgeon pin

Triumph 6T pistons +20 650cc
Pre Unit
f. Cast Iron Head
7:1
71mm +20=71.5mm
for Cast Iron Head - please do not fit to alloy head
complete with gudgeon pin, piston rings and circlips

Piston Clearance 0.12mm or 45thoumeasurements see techn. dataPrice per pair

Thunderbird 6T 7:1
Triumph, Pistons Pre Unit
71mm +40=72mm
Gudgeon Pin: 17.4mm
650cc

for Cast Iron Head - please do not fit to alloy head
complete with gudgeon pin, piston rings and circlips

Piston Clearance 0.12mm or 45thouMeasuremetns see techn. dataPrice per Pair

Triumph Kolben
TR6,T120,T110 650cc pre unit
71mm +40 = 72mm
Alloy Head
7:1
complete with Piston Rings, Circlips and Gudgeon Pin
Piston Clearance 0.12mm or 45thou

if you wish to lower the compression of an iron head engine, these pistons can be used. Giving approx. 6.76:1Price per Pair

9:1
Triumph T100,
64.5 mm
Pre unit
Pistons

Piston Clearance 0.12mm or 45thoucomplete with piston rings, circlips and gudgeon pinPrice per pair

Triumph.750cc
T140v.TR7V.
pistons
76mm STD
8.6:1
Price per Pair

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

Triumph Piston 750cc T140/TR7V +40
76mm+40,
compr. ratio: 7,4:1,
price per Pair
Low compr.
gudgeon pin diameter: 19 mm

Piston Clearance 0.12mm or 45thou complete with piston rings, circlips and gudgeon pin

Triumph 3TA/T90/T21 Pistons STD.
58.25 mm
Price per Pair
Made by GPM, Italy
Compr. ratio 7,5:1

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

BSA B44 Piston Ring Set / Piston Rings +020. 79.5mm. Gandini.
1/16" x 2
1/8" x 1
also fits Norton 16H, ES2 and Model 18
Original Piston
check thickness

Gandini

Norton ES 2 Piston Ring Set / Piston Rings -020
79.5 mm

only for Gandini pistonCompression Rings thickness: 1.5 mmOil Ring thickness: 4 mm

Norton 500cc Dominator, Mod. 88, Mod.7, Mod.77JP Pistons Made in Australia 7                         1949-5588                       1952-6388 Nomad          196088SS                   1961-66197cc, OHV, CR 7.8:1, 2 cyl including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per pair Please look at all pictures

Norton 500cc Dominator, Mod.88, Mod.7, Mod.77
+020+20 = 66.5 mmJP Pistons Made in Australia

7                         1949-5588                       1952-6388 Nomad          196088SS                   1961-66197cc, OHV, CR 7.8:1, 2 cyl including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per pair Please look at all pictures

Norton 500cc Dominator, Mod.88, Mod.7, Mod.77
+40 = 67 mmJP Pistons Made in Australia
 
7                         1949-5588                       1952-6388 Nomad          196088SS                   1961-66197cc, OHV, CR 7.8:1, 2 cyl including gudgeon Pin, piston rings and circlipsPiston Clearance 0.12mm or 45thouPrice per pair Please look at all pictures