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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

19233A
+040
75.8mm 9:1 Compression
with Gudgeon Pin and Piston Rings Please look at All pictures

Piston Used

3.35mm

Wellworthy
1088
+020
78.15mm

no Gudgeon Pin
1 Piston Ring missing

72.7mm

no Gudgeon Pin
no Piston Rings

New Imperial 250cc Hepolite pistonModel 30. 30DL
4049
68 mm Diameterused or NOS, no guarantee1933-1936Mod. 30, 30TLPlease look at all pictures

+040
15304

61.05mm

with Gudgeon Pin
no Piston Rings

59.65mm

no Gudgeon Pin
no Piston Rings

M1710
62.9mm

with Gudgeon Pin and Piston Rings

TRIUMPH
Heplex
10500
+030
55.75mm

OHV
Model: De Luxe 3T, Twin
C.R: 6.3 to 1
STD = 55mm

62mm

no Gudgeon Pin
no Piston Rings

59.6mm

with Gudgeon pin
no Piston Rings

Villiers
46.8mm

Heplex
13952
+030
58.8mm

OHV
Model: T21, 3TA
C.R: 7.5 to 1
STD = 58.25 mm

with Piston Rings
no Gudgeon Pin

for restoration - no warranty

Brake Shoes for Conical Hub 8" /Pair

T120 T140 O.I.F.
A65 etc. O.I.F.

2 REQD

Heplex
7879
+020
73.4mm

with rusty Piston Rings and Gudgeon Pin Compression hight is 40 mm Gudgeon pin diameter 20 mm

Piston used
16819A

Hepolite
16819A
+020
71.3mm

with Gudgeon Pin and Piston Rings

E6884
68.75mm

with Gudgeon Pin and Piston Rings

15762
71.3mm

with Gudgeon Pin and Piston Rings

65mm

no Gudgeon Pin
no Piston Rings

Piston NOS 50.9mm +40

Heplex
+40
50.9mm

with Gudgeon Pin and Piston Rings

Hepolite
11564A
71.45mm

OHV
Model: 6T, Thunderbird
C.R: 7 to 1
STD = 71 mm

no Piston Rings
no Gudgeon Pin

for restoration - no warranty

Triumph
19500
STD
54.8mm

7150
1633-35
63.35mm

1933/57 SV Model: B1, B20, C10, C10L
1935/6 OHV Model: B2, B18
STD = 63 mm

no Gudgeon Pin
no Piston Rings

for restoration - no warranty

Heplex
14005
4638
59.9mm

with rusty Gudgeon Pin