Description
exhaust valve for BSA M20/M21 500/600cc.
head diameter 1.626" (41.30 mm.).
stem diameter 0.347" (8.80 mm.).
stem length 5.680" (144.26 mm.).
Alpha no. V20.
exhaust valve for BSA M20/M21 500/600cc.
head diameter 1.626" (41.30 mm.).
stem diameter 0.347" (8.80 mm.).
stem length 5.680" (144.26 mm.).
Alpha no. V20.