I'm quite new to the world of cycling, but I'm not so new to realise that the low-end Shimano components on my 16speed Specialized Allez aren't the greatest.
I'm thinking of upgrading them to the 105 groupset, but I'm getting confused by all the different options. I figure I need a 10 speed cassette, a new front and rear derailleur, a new crank set, a new chain, and new shifters.
Questions being: Is that all I need, and what recommendations do you all have for gear ratios? Do I have to match front/rear ratios on the crank/cassette or just choose ones I 'like'?
Is this a massive job?!