I think norton realised making in alloy wasn’t cost effective, I can tell you steel manx items weigh a lot less than alloy. Those alloy items are a thick casting. The top of the casting looks like it’s been machined so wouldn’t be surprise if the casting has been machined over.
Got to remember a 7000rpm garden gate manx is quite a destructive experience so no point making everything super light. In fact most riders would remove all this non essential cycle stuff and chuck it in the nearest ditch.
Got to remember a 7000rpm garden gate manx is quite a destructive experience so no point making everything super light. In fact most riders would remove all this non essential cycle stuff and chuck it in the nearest ditch.