AER Fork Rebuild 

Awesome

Thanks man. We can make them really good

@@highlandcycles can I just send you the damper side insert for a revalve? I’ve changed seals and done rebuilds many times I just don’t wanna mess with shims by myself.

@@davidbeauvais1364 Yes we can do that

Ahhh. That’s interesting

They can leak air onto the wrong side of the piston in the air side and cause them to do that. It’s not much so it won’t look like they have dropped pressure. You have to disassemble like you did on the 250

@@highlandcycles thanks, so which seal will be leaking the air? Is it the o-ring on the valving that you slapped all the grease on? I noticed you didnt replace that o-ring, just greased it up. So which o-ring do you think i need to replace? Thanks man👍

@@farmer3242 It is the big seal for the air piston

​@@highlandcyclesi found a post on internet about sagging aer forks and they said to hold the front wheel down to the ground by having someone sit on wheel or tie wheel down somehow and pump forks up and down and pull them up to full extension and the air will escape back into correct chamber and fix the forks. My forks were stuck down at about half stroke. I did this and it worked perfectly. I so glad i didnt have to take it all apart. I hadnt ridden bike for about 3-4 months and in the last 2 weeks i noticed they had sagged. Great tip for everyone with aer forks.

@@farmer3242 I have heard of that too. I just like taking them apart to inspect everything and lube it all up because they shouldn’t leak like that. Something else isn’t perfect if that’s happening

Thanks

You have to be super careful on that. I’ve never had a failure. I inspect them closely and if they look questionable at all, I replace them.

@@highlandcycles How many hours do you like to replace those seals and the oil side cartridge seal as well? thanks

The white lithium stuff that KTM uses is good.

matt tuell I am pretty sure it’s in this one ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-CdKxnVgvqE4.html

Not on this set.

It should be fine.

@@highlandcycles thanks, been up since 2330 last night, so missed it and over thought it a bunch. Have a good weekend.

Yes. Heat it up. Have all the orings to rebuild it on hand too

It’s basically the same. There are differences but you should be good.

Motoman744 over fill and bleed the excess

I use Motorex

Sorry. Yes you need to add to the outside chamber on the right side also.

And it’s 220 cc in both outside chambers

@@highlandcycles awesome thank you. Love your videos! Whenever one of your videos comes up whe looking for tech info I'm always sure to watch it so keep it up!

Thanks so much

Just a few CC’s. Maybe 5-10

Definitely not normal. How many hours? It's due for an inner cartridge rebuild if there's a ton of pressure coming out of the bleed bolt up top after it sits for a few days.

Probably the best and easiest thing is to buy the 2021 air spring. It has a different balance chamber and really helps with that harshness. The next thing would be to have us install the WP cone valve adaptation kit and valve it for you but that isn’t cheap.

@@highlandcycles hell ya! Thanks for rec. You rock. I’ve binged like 10 hours of your videos lol. Nice family and cool business

@@ericbulic8589 thanks so much

@@highlandcycles no problem, and do you mean the 21’ ktm air spring? Or the k-tech insert? Any part numbers for it? Thanks again.

@@ericbulic8589 KTM insert. I don’t have them in front of me but it’s the right side chamber on all the 21 and up AER forks. It’s still air but way better.

Could be that the air spring needs to be serviced. They need grease

Or you could have a leak in the seal that keeps the air in the correct side of the chamber

I use the high pressure Motorex stuff.

@@highlandcycles hello, can you tell me what kind of fat it is ??

Also sorry forgot to add, great video. New subscriber

The other fork is like a normal fork just no spring. It’s all oiled up.

i saw some dude on RMATV using race tech fork grease