Como Chain & Sprox source?


Our Como's (2.0?) have some hard miles and wear on drive chain and sprox, a little over 8,000 miles on one and @ 3,500miles on other Como.

Need Como front sprocket, rear 9 speed cluster and chain for the hi mile one.

a reputable U.S. online retailer or similar source appreciated, previously could find correct 48T front sprock. on Specialized website, now lists 40T ?

please no LBS references thanks, I have access to a lifetime bike nut and his tools.