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BSA
10877
STD
76.199MM

with Gudgeon Pin and Piston Rings
new, old stock

NEW IMPERIAL
5773
+020
62.6mm

with Piston Rings and Gudgeon pin

Norton Piston 16 H +20, Original, Wellworthy NOS

JAP. J.A.P.
11614
+060
51.5mm

with Gudgeon Pin and Piston Rings

5773
STD
62.1mm

15784
54.7mm

with rusty Gudgeon Pin and Piston Rings

NEW IMPERIAL
5770
STD
55mm

with rusty Gudgeon Pin and Piston Rings

JAP
9855
+020
13229
51.9mm

with Gudgeon Pin
no Piston Rings

D4-5
75.58mm

with Gudgeon Pin and Piston Rings

The gudgeon pin diameter is 16.4mm
Compression height: 30mm
Total height: 81.2mm

New imp. HeplexModel 30. 30DL.
4049
STD
66.9mm

with Gudgeon Pin and Piston Rings

15630
+030
70.65mm

with Gudgeon Pin
1 Piston Ring missing

Piston. Bsa. 65-405 29351 62.9mm

+040
69.8mm

with Gudgeon Pin and Piston Rings

7304
+060
61.46mm

11062
69.85mm
Pat No. 616820

OHV
Model: FH Huntmaster
C.R: 7.25 to 1
STD=69.989mm

with Gudgeon Pin
no Piston Rings

Piston used 16945

16945
+040
67.95mm

with Gudgeon Pin

19916
+040
67.85mm

with Gudgeon Pin

Nüral

with Gudgeon Pin and Piston Rings
Diameter: 69.9mm

64.9mm

with Gudgeon Pin
1 Piston Ring missing

73.3mm

with Gudgeon Pin and Piston Rings

Hepolite, 61 mm, std., new, No. 4489

OHV
Model: Red Hunter, LG, LH, De luxe, OG, OH
C.R: 7 to 1
STD=61mm

with pin, light rust
new,old stock

Piston used

53.9mm

no Gudgeon Pin
no Piston Rings

+030
64.55mm

rusty Gudgeon pin
2 Piston Rings missing

BSA A50/A65 Brake Cable 1962-66 - if cable operated

Inner: 57cm
Outer: 34,5cm OD Thread: 6.5 mm - 1/4"  x 26 TPI

BSA Valve Spring Set C11 C12 C11G

Outer Springs
OD: 33,3 mm
ID: 25,3
L: 49 mm
Thread Diam.: 4 mm

Small Springs:
OD: 21.6 mm
ID: 16. 5 mm
L: 37.4 mm
Thread Diameter: 2.5 mmValve Springs