I'm still thinking about getting MERIDA CycloCross 3 #2014. The bike comes with CRANKSET : FSA Omega 46-36 Mega. I would like to replace the 46T chain ring with 52T. What are the most available alternative 52T chain rings that will fit the CRANKSET : FSA Omega 46-36 Mega? Or must I get 52T chain ring from FSA dealer?