[glassguy]

I got around to doing a few things to the 2018 z force 800 trail.Cleaned the air filter and now it's time to grease the zerks.I did notice that i need to replace about 3 of them and change a couple.
I can get them at Ace hardware which is close.After all Weiser,Idaho isn't all that big.
What size do i get or will i need?
The one that's on the rear a arms seems to be longer than the rest ,but they are behind the the back wheels.I can see that they might be a problem getting to.I want to find longer ones if that is possible and change them.I've seen those 90 degree couplers and was wondering if that might work .Any ideas would help.
Iv'e got a slight disability and try to make things easier for me.
One of the things iv'e done is put the loading ramps on the tail gate and pull the machine up to the height that i need.
Thanks all of you.

[NMKawierider]

As I recall they are all 6mm..some straight-some 90s. The heads are also millimeter and I found my 90 degree slide-on coupler leaked badly unless held some pressure against it with a screwdriver or something. 

[glassguy]

nmk.
Thank you.I'm going to dig thru the internet to see if a longer zerk is made so i can use it on the rear wheel area.If not then i guess i will be removing tires to grease them.I'm going to get a coupler that locks.

[NMKawierider]

nmk.
Thank you.I'm going to dig thru the internet to see if a longer zerk is made so i can use it on the rear wheel area.If not then i guess i will be removing tires to grease them.I'm going to get a coupler that locks.

I installed some 90s on the rear knuckles and faced them straight back. I can get to them with a regular end now. On the a-arms, if you change them, be careful on the length and one of them can hit the frame and be broken off. At least on the old frames..learned that one myself.