Hi there , Mike here . New to Retrobike , having got myself a '97 (I think !) Gary Fisher Mamba .Stripped it down , sorted it and now re-discovering old bridleways I'd previously used , not having ridden off road for around a decade . Previously a road racer / time triallist , living in Worthing area West Sussex . Will be looking to upgrade chainset when original Shimano Alivio one wears out . Want to keep the old look with an LX or something similar . Can anyone advise me on availability of replacement rings for oldsville chainsets ? Thanks , Mike .