your bike so do with it what you want but a tiagra front caliper would be ample and a good starting point.
This. When I changed the shit Specialized calliper for a second hand £10 Sora I noticed a world of difference. Varno does good wheels for a decent price (use the search), change the shit mondo tyres unless you like punctures, pretty much everything else is decent kit and do what Skive says and replace as it wears out.
This. When I changed the shit Specialized calliper for a second hand £10 Sora I noticed a world of difference. Varno does good wheels for a decent price (use the search), change the shit mondo tyres unless you like punctures, pretty much everything else is decent kit and do what Skive says and replace as it wears out.