Alloy Exhaust Lock Ring - Norton Twins
Cast in Aluminium Alloy & machined on our CNC lathes these lockrings have 2 advantages over the original items:
- They are half the weight
- They have the same coefficient of thermal expansion as the cylinder head, reducing the likelihood of them coming loose which is what causes exhaust port thread damage.
Copper grease must be fitted to the threads!
Fits Commando & Dominator.
Price is per individual lock ring.