It's not a dumb question at all as most bikes have & should a spot to store at least a very small tool kit. Obviously not the 690.. I suppose it would add another 2 lbs. to the bikes weight specs..? I think it's important to have a kit though & usually throw mine in my back pack which comes with me pretty much everywhere. Bolts constantly come loose on off road bikes & a kit has saved me a long walk home several times. Whether you get a tank bag, fender bag or whatever bag, bring a tool kit in it.