Norton SOHC Manx Hairpin Valve Spring - Set of 4

Hairpin valve spring manufactured to exactly the same specification and shape as the orignal type fitted to Norton SOHC Manx Model 30M\40M engines.

These are manufactured by our main UK spring manufacturer, who is a reputable maker of hairpin valves springs and has made similar hairpin valve springs for other engine types.

This type which were often seen fitted to early Manx engines are exactly the same as the Norton International type (Item 0323), other than they have a slightly smaller eye diameter. However, in all other respects they are identical to the Norton International types.

I am not entirely sure why this second type of spring was used, and have talked to Stu Rogers about it, who cannot shed any light on it either. We can only assume that the slightly smaller eye meant fractionally less metal, and therefore a fractionally less amount of reciprocating weight - although the saving must have been minimal!

I do not see any reason why either type could be used with either engine variation - the choice is up to you! - although I normally fit this 'Racing International/Manx type on my own engines.

Photo shows new springs below and original spring at the top. Price is for a set of 4 which is required for one engine