We are fully conversant with the 'A' Series family of cylinder heads; from
the 948 cc through to the 1275 cc, and cover the full spectrum of heads from
Standard Leadfree to Full Race.
Standard Leadfree heads are fully assembled with new valves, bronze guides
and springs, and feature three angle valve seats for improved performance.
Econotune Heads have modified valves, throats and combustion chambers.
With the exception of the 12G295 casting, Fast Road cylinder heads feature
larger inlet valves and are fully modified. The 12G295 retains the original
valve size.
Race and Rally Heads are modified further to take into account the carburetion
and exhaust system to be used.
Improvements in power are always very impressive with all of the 'A'series
cylinder heads.
