2017 Fox 36 Axle and Air Spring

You can swap out the stock axle for something like the Wolftooth, just have to match boost/non-boost width, no extra hardware needed.

I don't think you can put an EVOL air spring in a 2017 36.

I could be wrong about that but the part numbers for the 2017 vs the 2018 onward are different and the 2018 onward (EVOL) list the air spring as NA2 where the 2017 does not carry this designation.

That would leave riding it as is, Luftkappe (DSD Runt maybe?), or Secus if you wanted to go that route or conversion to coil via Push ACS-3 or Smashpot.

In terms of cost from $ to $$$ - EVOL (if possible, doesn't look like it is), Luftkappe/DSD Runt, Secus, Smashpot, ACS-3

It can be tricky to sort out what is true because when something comes out it is presented as the greatest thing ever and afterward you see updates, changes, and complaints.

If you were cynical, always a good thing, you could argue that some of that is psychological to cultivate and drive a need/want for upgrades and the actual improvements are more subtle in many cases although at times there are actual fixes for issues or adjustments.

Then you have people who go gaga over stuff or who hate something but it is hard to work out if they are reliable as a source of information...I mean, what do they compare against, did they have a sucky setup, are they just a fan boy/girl, did they get a lemon maybe, all that jazz.

yourrealdad said:

I am running 150mm. Doesn’t the fulfill only allow you to control the negative pressure? It doesn’t actually make a larger negative spring does it?

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If you remove all travel spacers, i.e. set to max 160, with Fulfill, you can increase the neg pressure to suck down from 160mm to 150mm hence increasing the neg volume. This is tricky since you'll have to balance the pos/neg pressures to maintain 150mm and correct sag. This is how I run my fork. Don't really care about total travel. I like the initial feel better with fork sucked down by higher pressure in neg chamber than pos chamber. Top out is softer as well as increased sensitivity of the fork.

Here's free and easier way to gain neg volume with stock NA spring. You can increase the neg chamber by removing all travel spacers from bottom plate but set the transfer rod's travel setting to 150mm. You gain 10mm of neg volume doing so. The space taken up by travel spacer plate becomes free space for neg chamber. You can do the same at any travel setting with the transfer rod with no spacer, but the ratio between pos/neg changes at lower travel settings, so there is a limit how far you can go before too much neg volume affects fork performance. At 130mm to 150mm, this method works well. I like Fulfill setup better however since I can control neg vs pos pressure. Not as easy to setup but I think dual air works better than single air setup. Just my opinion of course. YMMV