AER fork for MX & Enduro ?

Neek
Posts
200
Joined
6/26/2008
Location
FR

Hello guys, 

I purchased a 350 ECF GASGAS 2022 last summer to ride trails, enduro with friends. Pictures below were taken in Italian/French Alps. This bike is incredible, motor, chassis and handling are perfect for my veteran profile (40 year old, ex local MX rider).

I want to ride the bike on MX tracks AND enduro/trails but forks are way too soft to hit jumps or just ride on real MX track (I am 220lbs with full gear). On the advise of a friend, I just bought an AER KTM Air fork from a 350 SXF 2020.

My goal is to have one fork with 2 air settings to do both Enduro and MX. Does this fork suit both discipline if I set the air fork pressure accordingly before I ride ? 

I was planning to switch forks accordingly to MX and Enduro but I could save precious time if I just have to set air pressure instead.

Have a nice day, 
Thank you for your help.

20250927 121514

20250927 105552.jpg?VersionId=8x2s.

 

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YZed250
Posts
1342
Joined
11/9/2014
Location
Costa Mesa, CA, USA
2/9/2026 9:48am
Neek wrote:
Hello guys, I purchased a 350 ECF GASGAS 2022 last summer to ride trails, enduro with friends. Pictures below were taken in Italian/French Alps. This bike is...

Hello guys, 

I purchased a 350 ECF GASGAS 2022 last summer to ride trails, enduro with friends. Pictures below were taken in Italian/French Alps. This bike is incredible, motor, chassis and handling are perfect for my veteran profile (40 year old, ex local MX rider).

I want to ride the bike on MX tracks AND enduro/trails but forks are way too soft to hit jumps or just ride on real MX track (I am 220lbs with full gear). On the advise of a friend, I just bought an AER KTM Air fork from a 350 SXF 2020.

My goal is to have one fork with 2 air settings to do both Enduro and MX. Does this fork suit both discipline if I set the air fork pressure accordingly before I ride ? 

I was planning to switch forks accordingly to MX and Enduro but I could save precious time if I just have to set air pressure instead.

Have a nice day, 
Thank you for your help.

20250927 121514

20250927 105552.jpg?VersionId=8x2s.

 

The AER fork can work well for enduro (and MX, obviously) but pressure build up can be an issue with long rides and altitude changes. 

There is an option for quick bleeders, Most tuners complain about leaking. 

moto9
Posts
239
Joined
11/11/2016
Location
Waimea, HI, USA
2/9/2026 11:31am Edited Date/Time 2/9/2026 11:35am

I agree, the air fork can be really good!

I picked up a 2018 xc 250 and stock the air fork was horrendous for gnarly singletrack.

So, I went in and opened up the valving, switched to 3w and run the pressure at 80 psi.

I lightened up the compression stack and also running a bleed shim.

It now handles heavily rooted sections, stays planted and tracks as it should.

I was on the fence with getting a spring kit or a complete cart kit, glad I didn't, saved me hundreds.

I did get the motion pro bleeders, the damper side does pump up some during the ride, I think they are good to have.

BikePilot
Posts
381
Joined
9/27/2014
Location
Golden, CO, USA
4/5/2026 9:50pm

Hi, I had that fork and rode both MX and Enduro.  It will be better than the xcw forks, but still not great, and adjusting air pressure isn't going to make them go from me to enduro.  Think of the air pressure like spring rate.  It's mostly based on your weight, and damping does the rest.  I found that by playing with the clickers I could get it rideable for me and Enduro, but it was always pretty bad in general.  

I eventually got fed up with it and installed A Kit KYB PSF-1 forks.  Right out of the box they worked better than I ever got the AERs to work, and were plusher on the rocky stuff while having better hold up and bottoming resistance on the MX track.  

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