Snap ring pliers, adjustable wrench, spanner is nice, asst. of metric hex or allen wrenches, #3 Phillips, asst. of metric sockets - I carry the following with me at all times:
1/4" & 3/8" drive
12mm deep well socket (limiter straps)
10 mm comb.
14mm comb. and 14mm socket (FRA)
Ohlins Spanner (springs)
Adjustable wrenches (Control rods)