1.c Norton SOHC Head and Barrel

- Coil Valve Spring Top Cup to fit early SOHC (coil spring variant) Model 30/40 International, CS1/CJ as well as pre-1948 Norton OHV models

- Coil Valve Spring Top Cup to fit 1948 onwards OHV models - Model 18, ES2, Model 19 etc

- Highest quality inlet or exhaust valve manufactured by G & S Valves - to fit all Norton OHV Model 18 and ES2 engines.  Also commonly fitted to Walter Moore CS1 and early OHV models.  See listing for more detail.  Price is per valve

- Highest quality inlet or exhaust valve manufactured by G & S Valves - to fit Norton SV (Side Valve) 16H 50cc engines. See listing for more detail of Big4 596cc valves). Price is per valve

- UK manufactured coil valve springs to fit 16H, Model 1 and Big 4 Sidevalve engines of the pre-war and WD type.  Pattern taken from 1937 sidevalve engine.  Price is per pair

Valve Collets to fit all OHV and SV Norton models - i.e. Norton ES2, Model 18, Model 19, Model 50, Model 55, Norton 16H, Big 4 etc.  Collets are high quality CNC machined in-house.  Sold as a joined pair (i.e. to fit one valve) 

- High quality Stainless Steel cambox through bolts. Screw into Sleeve Nuts - Fits all SOHC models.  This is the longer front cambox bolt that fits through the main cambox casting. Price is Each

- High quality Stainless Steel cambox through bolts. Screw into Sleeve Nuts - Fits all SOHC models.  This listing is for the shorter rear cambox bolt.  Price is Each.

- Set of 4 cambox bolts, both long and short, CNC machined in high quality Stainless Steel.  These have the correct deep Norton head hex head and top curved profile.  This listing for a set of 4 bolts

Traditional brown oil resistent paper type gasket to fit on the base of 500cc OHV barrels. Also can be used for some SOHC Models.  See detail listing for more information  

47 thou (1.2mm) thickness Stainless Steel Compression Plate. This really is a useful item andwill save you an awful lot of time with a fretsaw and file.  Used to amend compression ratio, fitted to base of barrel.

35 thou (0.9mm) thickness Stainless Steel Compression Plate. This really is a useful item andwill save you an awful lot of time with a fretsaw and file.  Used to amend compression ratio, fitted to base of barrel.

This is a 79mm (500cc) piston to fit Norton 79mm x 100mm Lonstroke singles - from well known piston manufacturer - JP Pistons. These pistons are CNC machined and very well made.