Tools needed to perform groupset overhaul I'm looking at buying the new Shimano 105 5800 equipment for my bike. It is a 2010 Specialized Allez (Sport Triple) and still has its basic Sora components that it came with. I asked my local bike shop how much it would cost to buy &amp; fit (6400 sek, ~€700 of which roughly $50 was the labour). Looking online, Wiggle sells the groupset at ~€400, and Chainreactioncycles at ~€450. If I can equip myself with the right tools for significantly less than the €300 saving it makes sense for me to DIY.

My questions:

What tools will I need to buy to be able to completely overhaul? 

What other tools are recommended to make it easier? (e.g. cable crimpers are better than regular pliers..)
A road groupset usually consists of a number of parts.

There are not many tools, and they are generally not that expensive.

With all the resources out there (youtube, sheldon brown website, etc) and basic mechanical aptitude it isn't a difficult task.

You need basic hand/bike tools, (hammer, metric allen keys/drivers, screwdrivers, pliers, socket set, torque wrench, etc)

In terms of specific tools for those components:


Bottom Bracket (BB)



  If Pressfit:
   A BB press, a BB punch/remover.
  
  If Threaded: A BB Wrench



Cassette : Chain Whip, Cassette lockring socket tool.  
Chain : Chain breaker, Chain tool or missing link pliers depending on chain
Brakes
Crankset : Pedal wrench or allen keys depending on the pedals. 


  Modern Shimano specific (like the 105 group): Hollowtech II crank arm installation tool
  Front derailleur
  Rear derailleur 
  STI levers (Shifters/Brakes)
  
  You will probably need to replace the cables, so a cable puller might come in handy. 


An optional extra that would come in handy and for future work on the bike would be a bike workshop stand I spent 100$ on mine and it has been excellent for regular maintenance and upgrading parts.