I have a Carrera Subway 2 hybrid moutain bike which I think is great, but now that I'm quite fit I find the gearing a little weak for my fitness level, only ever using the top 2 or 3 gears.
I'm thinking of changing the front chain set which currently has two cogs and provides me with 16 gears overall. I want to fit one with a bigger chain ring.
Can it be done and will I get away with only replacing the chain set an nothing else. Im in the UK.
