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JP Performance products for BSA Motorcycle A50, 500 Star engines

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A50, 500 Star 

JP0874
BSA  Motorcycle A50, 500 Star 
498cc, OHV, CR 7.5:1   1962-64
Metric Bore
65.5mm
Imp Bore
2.5788"
Head Shape
4N   +0.307" (7.8mm)
Clips
SC 
Cylinders
2
Crown
Dome
Comp Height
1.474" (37.4mm)
Length Inches
2.579 " (65.5mm)
D.B.B
1.087" (27.6mm)
Ring Comp
2x1/16"
Rings Oil
1x1/8"
OC
P
Pin OD
0.7500" (19.05mm)
Pin Type
P

            

        

    

    
        
    

        

            

                		

						



	




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