Cylinder heads

All the services and parts required to recondition your cylinder head, such as fin and thread repairs, Colsibro valve guides and valve seat cuts. We can also restore the original finish.

We offer a wide range of services and parts required to recondition your cylinder head, such as fin and thread repairs, Colsibro valve guides and valve seat cuts. We also blast and clean the heads to restore the original finish.

Due to the intense heat produced around the exhaust valve seat area, the valve seats must be replaced to run your classic four-stroke engine on lead-free petrol. We replace the seats with a special hardened steel insert and supply compatible valves for the replacement seats. We can fit the valve seats to any cast iron and aluminium cylinder head.