The Dundrod + utilises a high quality chain combined with Milenco's "Beefed-up" superior U - Lock.
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This exceeds the Sold Secure rating of Motorcycle gold and is only available utilising a Milenco 
14mm chain
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Constructed from the highest quality steel which is hardened and tempered to achieve the ideal combination of properties. Giving a finished chain that is hard yet not brittle and light for its relative strength.