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Heplex
7123
+030
71.7mm

62 mm std., new, No. 15162

with rings, light rust
with pin, good
with circlips

piston

Heplex
15782
40381
STD
58mm

5477
STD
75 mm please see last pict. for measurements rusty pin no guarantee

Heplex
11024
3244-2
+005
72.7mm

with Piston Rings, no Gudgeon Pin

66.674 mm, + 30, new, No. 15551

no rings
with pin, good
with circlips

+040
70.9mm

STD +040
84.8mm

no Gudgeon Pin

Compression Height: 31mm

Heplex
537556
STD
3250
75.15mm

Piston used

64533/5
62.2mm

Mowog
M1900
M1710
62.9mm

with Gudgeon Pin and Piston Rings

15928
STD
49.9mm

Piston used

20
51.2mm

JAP
51.5mm

no Gudgeon Pin
no Piston Rings

Heplex
5268
80.2mm

no Gudgeon Pin
no Piston Rings

84.75mm

with Gudgeon Pin

Hepolite
1820
7731
77.1mm

no Gudgeon Pin
no Piston Rings

15477
STD
74.55mm
Compression Height: 38.25mm

with Gudgeon Pin and Piston Rings

3250
STD
75.15mm

no Gudgeon Pin
no Piston Rings

BSA Piston used
Heplex
3320
79.9mm

no Piston Rings
no Gudgeon Pin

for restoration - no warranty

Hepolite
8600
64.4mm

Villiers Piston +010
52mm +010
Hepolite Heplex

BSA Piston NOS
250cc
STD
63mm
top of the gudgeon pin hole to the top edge of the piston 18.3 mm
Gudgeon pin diameter: 5/8"-16 mm
Compression hight: approx. 27 mm
early BSA -1937
new, old stock

with Gudgeon Pin and Piston Rings Please view all pictures

64.4mm

with Gudgeon Pin
no Piston Rings

90 1432
61.2mm

no Gudgeon Pin
no Piston Rings