So I am putting together a tool kit to take out with me on the trail. I would rather not carry a ton of tools so I am trying to see what I actually need. I went through the tool kit and it looks like that covers 99% of what I need. The only thing I found it lacking were tire irons and wrenches big enough to get the rear axle off so I bought the spoon/tire iron combo in size 22mm & 27mm. Now I have tire irons and axle wrenches.

From the stock tool kit I gathered I have:
- flat head and phillips screw driver
- 10, 12, 14, 17 open ended wrenches
- 8, 10, 12, 14 socket
- Pliers
- spark plug tool
- suspension adjustment tool


Besides the obvious:
- zip ties
- extra wire
- duct tape
- extra fuel line
- hose clamps
- safety wire
- bicycle derailleur wire
- Quick steel
-Chain master link
- multi-tool
- electrical tape
- patch kit
- tire pressure gage
- C02 Cartridges

For Multiday trips:
- radiator stop leak
-


What other tools do I need?

Also, from the stock tool kit, I believe the big hook looking tool is for the rear suspension adjustment. What is the square in the handle for? And then what is the tool on the top I am holding? An extension?

 

How are you planning on getting the rear wheel off?
I would ditch the CO2 & just take a air pump. Do you know how many CO2's you need to fill the tire? And once they are used, they are useless.
Ditch the spark plug & suspension tools, bicycle wire (don't know what that could possibly be used for).
I would make up a premade jumper cable with alligator clips to jump the bike/battery.
I lieu of a mini tool, I have a small hand ratchet with phillips/straight/hex heads, pick one up at HF.
A assortment of metric nuts/bolts.

An alternative to all those wheel removal & tire repair tools is go 'tubliss' and bring only zip ties and slime.
Have you ever patched a tube?

 

--to get the rear wheel off I have 22mm & 27mm axle wrenches & tire irons, what else do I need?
- My CO2 is a pump/C02 combo. been using it for years to fix flats on my MTB bike. it will take 1 CO2 to do the front, 2 to do the rear. Should be enough to get me out of the woods

 

I like to carry a small vise grip rather than pliers. A headlamp may save your ****.

 

I think that tool above is supposed to be for the rear spring adjustment, but I found it less than useful.

The spare bolts and nuts mentioned by durielk should definitely go in the kit. Consider adding spare brake and clutch levers and a shifter. Find a place on the bike where these can be zip tied or safety wired on, like the up-facing side of a skid plate. Some guys will get a spare clutch cable and tie it to the existing one so it's already in place. Add a front tube. It can be used for the rear in an emergency. Include talcum power and dish soap for mounting the tire. Nitrile gloves.

For more reading that you'll probably want to do, look here: The Toolkit Thread | Adventure Rider

 

I've been on a ride where an atv mangled their chain. So two master links n spare short piece of chain and a
good quality chain breaker were added on long rides primarily.

I broke my collar bone at a desert night race off the 15 fwy n I was glad someone there gave me a 800 ibuprofen so I add that too.... Mainly try to pack it a tool belt or a small back pack instead of adding to the bike so much.

 

I can see if your racing caring stuff in a back pack, but..... I ride with a camel back for liguid refreshment, and I would not want a back pack with all those tools, spare parts, spare gas, etc. on my back. I know guys do it, but that would be HELL for me.

I ran out of gas 10 miles short on a DS ride, this other rider pulled a gallon of gas out of his backpack. That was crazy! but I'm glad he had it!

I've broke a MBike chain, but never had any chain problems besides that, and not planning on it.