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@tynan
I got's me one of these, the gold is a ti-nitride coating which is super super hard, even compared to steel, this coupled with my K710SLGold chain from KMC, which is also ti-nitride coated means not only have I spent this years turkey money on bike parts but I have the hardest, smoothest, toughest drive chain in London and I will fight (and kill) anyone who attempts to challenge me for the title of 'London's hardest drive chain'