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BSA Front Wheel Hub used

no warranty - for restoration

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

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

1123 G7
+040
67mm

with Gudgeon Pin
2 Piston Rings missing

16387A
53.8mm

with Gudgeon Pin
no Piston Rings

Hepolite Piston. used. 1931 500cc. 1932-40 570cc sv. 1140cc L, K, KX.

with Piston Rings and Gudgeon Pin

for restoration - no warranty

Pin diameter: 18.6mm
Compression height: 41.3mm
Total height: 81.2mm

Matchless
2060
+20
86mm

with rusty Gudgeon Pin
no piston rings
no Circlips
new, old stock

Matchless Piston
2060
+60
87.1mm

no Piston Rings or Gudgeon Pin
new,old stock

Hepolite Piston. used. 1931 500cc. 1932-40 570cc sv. 1140cc L, K, KX.Diam.: 86 mm
Total hight: 82 mm
Compression hight 40 mm

Casting No. 4/2 395 Am
B52
Hepolite 3495
with Gudgeon Pin and rings

Hepolite
8899
+40
70.8mm

with Piston Rings and Gudgeon Pin

Hepolite
8600
STD
63.9mm

with Piston Rings and Gudgeon Pin

new, old stock

Hepolite
18140
63mm

new, old stock

with piston rings and gudgeon pin

50mm

probably japanese

no Piston Rings
no Gudgeon Pin

BSA A50/A65 MainWiring Harness 1966-67

Early 12V Models with two Switches on Headlight/Headlamp

no wiring diagram available