BSA A10 / Ariel 650FH Hepolite piston set Std + O.S. (67-423 / 67-1416)
condition: NOS Hepolite nr. 11412 Compression Ratio 9:1
Made in England by AE Ltd Bradford
fits:
BSA A10 1950 - 1962 (opn 11412)
BSA A10 Golden Flash 1963
BSA Super Rocket
BSA Rocket Gold Star
Ariel 650FH Hunt Master twin 1954-1960
Std. size = 70mm, Oversizes available: .020" .030" .040" .060"
C.R. 9:1
+0.060" only available in 7.9:1 C.R.