I've decided that I want to improve my current bike instead of buying a new one, I'm wondering what upgrades people would suggest applying to an aluminium hardtail. Do I upgrade wheels, frame, fork, groupset or what first? Bike currently weighs 13.3 kg and I am looking to lose some weight to help me on the climbs. Budget is around £500 for improvements, I would ideally like to cut the weight by about 1 kg, since the itty bitty savings from upgrading pedals, handlebars, seatpost and stem do not amount to much and would end up costing several hundred pounds to drop a maybe 300-400g of weight, which would be less noticeable.