1.c Norton SOHC Head and Barrel

- High quality exhaust valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.735" or 1.750". Standard Model 30\40 stem diameter : 3/8" - Stem length: either 4.565" or 4.590". Price is Each. Variable Listing - See detail listing to check stock availability for each variant 

- High quality exhaust valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.735" or 1.750". Standard Model 30\40 stem diameter : 3/8" - Stem length: Either 4.635" or 4.650". Variable Listing - See detail listing to check stock availability for each variant 

- High quality inlet valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.635" - standard Model 30/40 stem diameter : 11/32" - Stem length: 4.875".

- High quality inlet valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.635" or 1.655". Standard Model 30\40 stem diameter : 11/32" - Stem length: 4.590". Price is Each. Variable Listing - See detail listing to check stock availability for each variant 

- High quality exhaust valves manufactured by G & S Valves - Head Size : 1.635" or 1.655", with standard Model 30/40 stem diameter : 3/8". This is blank stem type, where customer cuts length and groove themselves.  1.635"/1.655" head diameter are the most common sizes for 350cc Model 40 International exhaust valves. Price is each.  This is a variable listing, see listing detail for indvidual stock availability

- High quality exhaust valves manufactured by G & S Valves - Following Head Sizes available (check your original) : 1.635" or 1.655". Standard Model 30\40 stem diameter : 3/8" - Valve Stem length: 4.590" - one of the standard lengths. Price is each.  This is a variable listing, see listing detail for indvidual stock availability

CNC Machined top cup, to take tapered collets, to fit all SOHC engines. Note: These top cups are sold complete with a matching set of collets (pair) to fit a 11/32" inlet valve. Although these are made using the original taper, I have found many pattern collets have slight variations and do not seat properly. Therefore these top cups have been machined with exactly the same taper as the collets and are sold as a matching pair.

CNC Machined top cup, to take tapered collets, to fit all SOHC engines. Note: These top cups are sold complete with a matching set of collets (pair) to fit a 3/8" Exhaust valve. Although these are made using the original taper, I have found many pattern collets have slight variations and do not seat properly. Therefore these top cups have been machined with exactly the same taper as the collets and are sold as a matching pair.

CNC Machined top cup, to take tapered collets, to fit all SOHC engines. Note: These top cups are sold complete with a matching set of collets (pair) to fit a 5/16 Manx Inlet or Exhaust valve. Although these are made using the original taper, I have found many pattern collets have slight variations and do not seat properly. Therefore these top cups have been machined with exactly the same taper as the collets and are sold as a matching pair.

CNC Machined top cup plate, with distinctive ears, which retain the hairpin valve springs on SOHC engines. These valve spring retainers fit all top cup plates (sold seperately) and are CNC milled from solid - so wear less than the original Norton items.  See detail listing for more information. Price is each.