2026 KPMI Full Catalog V1 - Flipbook - Page 37
BSA B50 GOLDSTAR 1971-1973
®
™
bsa
Keeper Set • H. T. Steel • O.E.M. Replacement
KPMI P/N
Style
A
B
C
D
E
Quantity
Rep. BSA®
OEM P/N
51023-2
Single Radius
Bead
0.310"
10.0°
0.235”
0.285”
0.417”
2 Pr.
71-1166
“B”
“D”
“C”
“A”
“E”
BSA A65 1971-1972
®
™
Head Diameter
Stem Diameter
Tulip
O. L.
Remarks
Valves • Black Diamond™ • Black Nitroneg Stems
KPMI P/N
Type
10-4148
Intake
40.64mm
1.600”
0.3110”
R 1.500”
3.600”
Standard
10-4150
Exhaust
35.81mm
1.410”
0.3105”
25º
3.555”
Standard
Valve Guides • Manganese Bronze
A
B
C
D
E
F
G
Intake
Exhaust
0.760”
0.840”
0.685”
1.135”
0.680”
0.3105”
0.5010” / Std.
10-4135
+0.002”
10-4136
+0.004”
10-4137
No seal required.
Wrist Pin Bushings • Bronze
KPMI P/N
Material
O. D.
I. D.
O. L.
Remarks
Quantity
10-10350
SAE660 Bronze
0.8775"
0.7480"
0.950"
Standard
Pkg. of 1
10-10352
SAE660 Bronze
0.8795"
0.7480"
0.950"
+0.002”
Pkg. of 1
Designed and manufactured by Kibblewhite® to original OEM speci昀椀cations with Kibblewhite® quality and precision.
Crankshaft Bushings • Bearing Bronze
KPMI P/N
Material
O. D.
I. D.
O. L.
Remarks
Quantity
10-5010
SAE660 Bronze
1.815"
1.501"
1.005"
Standard
Pkg. of 1
10-5011
SAE660 Bronze
1.815"
1.491"
1.005"
-0.010”
Pkg. of 1
10-5012
SAE660 Bronze
1.815"
1.481"
1.005"
-0.020”
Pkg. of 1
10-5013
SAE660 Bronze
1.815"
1.471"
1.005"
-0.030”
Pkg. of 1
10-5014
SAE660 Bronze
1.815"
1.461"
1.005"
-0.040”
Pkg. of 1
10-5015
SAE660 Bronze
1.815"
1.451"
1.005"
-0.050”
Pkg. of 1
10-10000
SAE660 Bronze
1.835"
1.451"
1.005"
+0.020” OD
Pkg. of 1
19
Machined from high quality mill certi昀椀ed SAE660 Bearing Bronze (Custom sizes available).
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