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10306
4181
+015
63.3mm used

for restoration - no warranty

15928
49.9mm

Ariel
+040
55mm
13410

with Gudgeon Pin

new, old stock

Heplex
14005
4638
STD
60mm

68.3475/3
70.2mm

65mm

with rusty Gudgeon Pin

Excelsior 148cc.
Heplex
11291
+15
55.4mm

Heplex NOS
5338
+60
64.4mm

1935/6 250 ccm OHV Model: De Luxe, 35/3, B2, B18
1934/6 500 cc OHV Model: Twin, J34/11, J35/12, J36/12
C.R: 7.25 to 1
STD = 63 mm

for restoration - no warranty

Hepolite
18140
71/131
63mm

Heplex
4638
14005
STD
59.7mm

with rusty Gudgeon Pin

Hepolite
BSA
Type C
7149
+060
63mm

OHV
Model: B21, Sports
STD = 63 mm
new, old stock

Hepolite
5208
+30
63.6mm

W139
66mm

New Imperial
500 OHV
+30
87mm
rusty rings
rusty gudgeon pin
no guarantee

54.4mm

035040
+020
72mm

58.7mm

075115
+20
75.9mm

Heplex
3254
70.35mm

with Gudgeon Pin

Triumph
8421
500cc
+030
63.6mm

OHV
Model: Tiger 100, Speed Twin 5T, Trophy TR5, Grand Prix. High Comp.
9.75:1. T100. 1939-1940.
STD = 63 mm

12381
616820
+30
63.7mm

with Gudgeon Pin

Heplex
11957
616820
+20
82,5 mm

Heplex
616820
+30
64mm

without Gudgeon Pin

12376
+020