I so needed to see this. Great info and extremely well presented and edited. In my opinion your video had Zero wasted time and 100% useful for everyone. Thank you very much.

Thanks for this man, probably one of the cheapest most effective upgrades one could do to their bike. About to upgrade my 150mm Pike to a 160mm with the 2021 spring, and this is just what I needed.

Here are some tips for mechanics looking at this: make sure you use the correct size foam rings if replacing them, they are sold as 6mm foam rings but when measured come closer to 5mm, they expand slightly when soaked in oil, modern rockshox forks use 0w-30 sus fluid in the foam rings and in both sides of the lowers refer to the specific fork for ml of oil to use (generally the same amount for air and damper side lowers), always make sure whatever you use to clean the inside of the lowers is fully protected by a cloth or something so you don’t risk scratching the inside of the lowers (this video is an example of what not to do when cleaning the inside with the pvc pipe because it easily could be scraping the lower as he turned and maneuvered it), a piece of pipe or something to protect the damper shaft is recommended so the c clip can’t accidentally scratch it , slick honey is rockshox approved as grease for the inside of the seals unless noted otherwise in the rebuild instructions, and the serial number on all rockshox products follows a specific sequence that you can use to identify the year of a fork at a glance: the first 2 numbers are the week of the year , the letter is the factory location, and the next 2 numbers represent the year it was made, but rockshox goes in batches of 10 so a 2011 fork and a 2021 fork will both have 01 as the numbers indicating year on the serial number. The bottom bolts typically have a torque of 7.3nm and you need to inspect the crush washers everytime you open a rockshox fork.

I just wanted to add a couple of details in case it might help people. That circlip / snap ring under the air spring assembly, it's supposed to be oriented in a specific direction. If you look closely the there is a sharp edge on one side of it and a slightly smoother beveled edge to the other side. The beveled edge side should be facing up (towards the air spring) / the sharper edge facing down towards the bottom of the fork. Also, helps to gradually re-pressurize the fork once you're done with your work and cycle it as you do so. i.e. Don't just pump up to your desired air pressure in one go. I would maybe go part of the way there, cycle the fork, then another interval, cycle, then to full pressure. Sometimes if done too quickly you'll find the fork may not be fully extended to full travel (although after riding it should reset itself correctly). Most importantly, big kudos to Dr. J MTB, this is a fantastic video. Love it. Great work!

Just upgraded my Lyrik 2020 with the new Debonair air spring. I went from 150mm to 160mm too. Watched most of the videos out there, but came back to you one as you did such a good job with your instruction. So thank you, it gave me the confidence and knowledge to tackle this job. Richie, UK

Great video, very clear instruction and explanations. You shouldn’t grease the top cap threads as they have thread lock compound on them. Also worth noting that the circlip on the seal head should be installed with the sharp edge to the outside.

Dr J., just wanted to say thanks for the video. I followed your instructions, with a small bit of improvisation (Rebound cap did not have a set screw on it, so I popped it off) and upgraded my 2017 Yari 150mm fork successfully. 👍🏽✌🏾😎. I am now a SUB.

Just completed this service on a 2020 Yari after my bike with a Fox 34 got stolen. When I got the 2020 Yari I thought it felt like crap- harsh and clicky and just a lot of stiction and dead space. And I was bottoming out all 150mm very easily even with way more than the recommended PSI. Using your video I just did the surgery to upgrade the two pieces and it’s a whole different fork now. Light years ahead. Butter smooth all the way through, no stiction, and much better small bump sensitivity with no dead zone. I’m elated. Thanks for the video!

One of the best Rockshox fork service videos on KZfaq, thanks, I'll have a go on my Pike now, thanks.

Nice video, it's nice to see someone not over grease everything. Just personal prefrence but I always prefer to pull the fork, it's a good time to service your headset at the same time.

Allow me to share my story with you. In the brand new YT industries bike with ROCK SHOX LYRIK, the fork was sucked in and the suspension travel was reduced. 3-4 cm of SAG was always inside the lower legs no matter what . On warranty rockshox decided that everything is ok but REPLACED the crown with the upper legs with NO SAG MEASURE. You know what I mean- those lines on one of the left upper leg with the SAG percentages. This did not solved the problem. They obviously wanted to hide the problem rather than fix it. Only after shipment to an independent suspension service in Poland (WichuWorkshop) was the AirSpring replaced. The problem has been solved, unfortunately the costs were on my side.

Well done my friend. Very informative!!! Keep up the good work!!!

Lower leg service: 3:26 Air spring/travel change: 8:57. top out bumper hack: 11:10

Wow, this is the best how to service I've seen👏. I want to try this.

Best vid I've seen so far...will be upgrading the Yari 160mm that came w/new ebike to the RC 2.1 and 170mm air spring, hope it helps beefen up the fork vs. going Zeb or Fox 38. Really appreciate the instruction detail !

Great video! The explanations and process are put together excellent. Mostly I'm glad I'm not the only one that understands beating your carbon frame with a ratchet or other tool and the benefits you'll receive 🤘

Great tutorial, I've seen this done several times but never given it a go, reckon by following this I could get it done. Love your trick with the PVC pipe

Thanks for the video, it helped me a lot.

Awesome video. I'll do it on my pike tomorrow

Great video. Clearly explained, good video angles. Worked perfectly. Thanks.

New to your channel--just watched the whole thing! Nicely put together and explained very well. Thank you!

Thanks for the video. Nice and clear, easy to follow for those of us that like to be reassured we're not fucking up! - helps keep what is a straight forward job, straight forward!

Great video. I plan on doing that service tonight, thanks!

Thank you. Very useful for me👍👌

Great video and covers everything thanks. Reducing my 170mm yari to 130 using new air shaft..also going to do the bumper mod. Thanks very much

Thanks bro. This was super helpful.

Thank you! Just about to do this and found your video excellent!

Thanks. Extremely helpul.

great video man! Thanks! Very helpeful

This is an amazing Video! Very helpful! Thank you

Dude, brilliant video. I've been questioning myself gor so long as to whether or not invest in the right tools and service my forks myself. Totally doing it now, great job!

Great video. Very informative. 👍🏻

Fantastic vid man...very thorough!! You have yourself a new and interested subscriber!! I, too, run a 2020 Lyrik Ultimate and am nearing my first 50hr lowers service, so this couldn’t have come at a better time for me. Also planning to grab that airspring upgrade (just the upper seal and foot nut) for this first service too. One quick question, if I may.... I only have slick honey...no SRAM Butter or the Dynamic grease. Which would you recommend I pick up?

You earned a subscribe from me. That video was EXCELLENT

Spot on video! Cheers!

Good day, why some ppl put oil in the positive air chamber and some ppl don’t, is that a preference or not cause I took my lowers off my RS pike and it had no oil in the air chamber

You should take a look at everflow.it, it is a much better option of both the B1 and C1

Great video thanks! Ive just taken mine apart new from factory and the circlip was on the other leg not this one. Does anyone know why this may be or just an assembly mistake?

Great video! Keep it up

DO you not have to push the fork all the way into its travel when tightening set srews as there will be air left in the chamber?

Ciao a tutti sulla turbolevo 2018 ho la forcella revelation 35 diametro 150 mm escursione se metto il nuovo debonair 2021 da 160 e compatibile e la forcella diventa 160? Grazie

Great video! be helpful to know, do you use same syringe for injecting 0w-30 and 3wt or do you always use different syringe, or is it ok to just clean syringe with alcohol after using and use with different oil?

Great video! What’s the diameter of the plastic rod you use to clean the stations out? It’s a great idea.

Has anyone encountered an issue with the air spring being sucked in all the way, is their a way to release the pressure

hello, great video, congratulations too I have updated my 180 mm lyrik ultimate with the 2021 version I wanted to ask you if you had any set up parameters for HSC and LSC to suggest the fork is installed on an ebike I weight 90 kg then you think that is the case to remove the tokens? at the moment I put 2. Thanks

When putting the bolts back onto the lowers, is there a need to release air inside first? In the video it is not shown but a cut in the scene is their where the lowers are more compressed. I feel silly for asking, is it just me?

My 2021 Trek rail 7 comes with that debonair I think

I just replaced the air spring in my 2021 Ultimate. Came 120 needed to be 140. Watching the video, I removed the top out bumper. I have not ridden yet, but all feel fine. Later to find out you put in back. Should I be concerned about damaging my new fork, and should I put the bumper back before even trying it?

Hey man I have a 2019 revelation rc with 130 mm travel. Am looking to upgrade the air spring and add more travel. Would I be able to go from 130 to say 160/170 mm travel? This is on a marin san Quentin frame. Cheers!

Hi, so do you need to modify how much oil is in the damper if you change the spring volume to match? I can’t really see any information on google. I would imagine that for a 10% increase you probably wouldn’t notice it. However I thought I should ask

Has anybody tried cutting the top-out bumper up in order to get a bit of the added small bump compliance and mid-stroke support without increasing the bottom-out resistance to the point you don't want any tokens in there anymore?

Does adding travel from 160 to 170mm to a lyrik rc is problematic?the fork will be weaker or something?RockShox suggest doing it? it's just buying and installing the 2021 air spring?and it will work fine?

I just did the upgrade for my lyrik. The sag, with the same PSI, changed from 30% to 20%. Was this your experience as well?

Has anyone else tried taking out the top out bumper ? And have it work better?

I have the 2021 Lyrik ultimate C2. Shouldn't that be 3 cc of 3wt oil on the top of the air spring? The spec sheet says 3cc but for volume it says "bleed" whatever that means, lol. If you are not greasing the air spring or removing should I lube the ID with the grease from the top? Easy enough to remove the air spring so I'll probably do that. Thanks

About those circlip pliers... what size are they and are they also compatible with circlips for the Zeb and also for Fox forks?

Only I noticed that he didn't put a rubber damper on?

Great video my friend 👍🏻 did you say I could use a 24mm socket to remove the air token section?

Can you please tell me when u insert the oil into the lowers do you put it into the lower leg chamber or into the air spring chamber? Do you understand what I mean?

Ele montou faltando a borracha de retorno do parafuso debonair (batente)

Hi. You are missing the rubber bumper on air piston. You removed it and forgotten to put it back.

Is it important to change the crush washers when reinstalling the bottom bolts in your opinion .

@ dr. J could you go more into detail as to what that top out bumper does? Both new air spring and old?

I’ve seen mixed reviews on the new debonair spring installed on Pike forks. People say it takes away some suppleness and feels harsh. Did you notice any difference on the ride feel before/after on your 140mm Pike?

Hey! If I want to increase my lyriks travel, (its actually 160mm), I should buy this new air spring in 170 version? (I obviously want to upgrade to the new Air Spring).

@9:37 when the old air spring is removed. Where is the top-out bumper on the old air spring? The new air spring shows the top-out bumper.

So can I go from 150 to 180 and from 180 to 150 by just replacing the shaft ?

Do you thing that I need to service lowers on a brand new yari 2021..some told me they come dry

I'm 6'2 215 would the top out hack still work for someone my size?

Instead of taking air spring top mount you just get valve out. No problem

thanks for the video! I have a 2016 Pike RCT3, could i upgrade to the latest version of Debonair, or just the previos? Rockshox said that I can't but I don't understand why....Its almost the same...what do you think?

Hey matey what is the advantages or taking out the top out bumper? I'm wondering if I should do it on my 140 RC revelation

Are you sure that what you say is correct regarding the hack you mention by removing the rubber part? I think you are wrong. Rockshox increased the height of the red piston, in order to place the top air piston seal higher inside the stanchion in order to fine tune the position of the main air piston seal relative to the position of the equalisation channel inside the stanchion. By removing this rubber you allow the main air piston to be placed lower inside the stanchion, so not only you place it away from the equalisation channel (contrary to what rockshox designed), but you also DECREASE the negative volume chamber while at the same time you INCREASE the positive volume chamber because as already said you allow the main air piston to sit lower inside the stanchion. If you want to increase the negative volume chambr you have to add one more rubber like this and not remove one. These way the main air piston seal will sit even higher inside the station. This way you will increase the negative chamber but you will decrease the positive chamber. But you have to make sure that the new height is in place with the stanchion equalisation channel. Please take me question as a positive comment, and I hope I will have a reply from you just in case I miss something here. I really liked your video and already subscribed. :)

So wait, what is the downside of removing the top out bumper? Warranty? Bottom out may do damage?

Was there crush washers that needed to be replaced on the bottom bolts? My kit came with some

If I do the air spring service on a 2020 FS-Yari-RC-B2 170mm should I be using the dynamic seal grease or would the sram butter be fine?

what oil is that?

would be nice if you would list the part number

By removing the top out bumper, are you also increasing the travel by around 15mm?

Can you go more than 10mm travel increase? Say 160mm to 180mm?

I wonder why they spec oil on topmof the air spring 🤔

Is it correct that I can't extend my rev's from 150mm to 160mm because it is a 29er? This is what my lbs told me. Seems a bit odd because the lowers take the wheel and the air spring is in the uppers? Help anyone?

Wow! I can't believe you left out the torque specs on the bottom bolts! 😢 Now I'm going to have to look it up. It was just a good video right up to that, sorry.

Can I use Sram butter instead of dynamic seal grease on a 2021 Lyrik Ultimate? What's the differences between them? Thank you!

Sooo. If I upgrade my 2018 Revelation to the 2021 airspring and 2021 rc2.1 damper unit I would get a pike ultimate... Question is, if you actually need the dynamic grease and 3ml of oil on top of the air spring?! :D

Where the f is your torque wrench?

150mm you can go to 160mm right ? Then 160mm can go up to 170mm right ? How about 160mm down to 150mm Lyrik ultimate 2021 ?

Is the lock ring tool a standard Park FR 5.2 cassette lock ring tool or similar?

Is lyrik ultimate more compliant than fox 36 grip 2?

Hi what oil you use ?

If it's 0 30 oil can I use Mobil1 0 30 ?

Really curious about the performance difference of the new spring with the bumper removed. Just installed the new spring on my older Pike and it’s already an improvement.