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RockShox Super Deluxe Ultimate

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Cell4soul

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Discussion starter · #1 ·
The RS Super Deluxe Ultimate is available with either a linear or progressive rebound tune. I am not sure which to get. My bike is a Trek Fuel EXe. From what I understand, the frame has a linear travel curve. I will be running the RS coil with the EXT Superlight V2 coil, which is also linear in travel. The RS coil has Hydraulic Bottom Out (HBO), which is supposed to help with progression as the coil sinks towards the end of its travel. Given all this information, would you recommend I get the RockShox Super Deluxe Ultimate Coil shock with the linear or progressive tune?

I appreciate any feedback. I have searched the subject for hours, but can’t figure out which way to go. Thanks again.
 
#2 ·
Cell4soul said:
The RS Super Deluxe Ultimate is available with either a linear or progressive rebound tune. I am not sure which to get. My bike is a Trek Fuel EXe. From what I understand, the frame has a linear travel curve. I will be running the RS coil with the EXT Superlight V2 coil, which is also linear in travel. The RS coil has Hydraulic Bottom Out (HBO), which is supposed to help with progression as the coil sinks towards the end of its travel. Given all this information, would you recommend I get the RockShox Super Deluxe Ultimate Coil shock with the linear or progressive tune?

I appreciate any feedback. I have searched the subject for hours, but can’t figure out which way to go. Thanks again.
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do you think you'll notice the difference?
 
Discussion starter · #6 ·
johnsogr said:
I believe you're talking about the rebound tune? Honestly, I'd just reach out to Trek and see what they recommend. I asked this of Transition and they got back to me right away.
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Yes, the rebound tune. I tried calling RockShox/SRAM today. I was on hold for 1 hour and finally gave up. I think I‘ll try to call Trek on Monday. Thanks for your feedback.
 
#9 ·
Just thinking about it from the coil spring aspect it won’t kick pack harder returning from deep in the stroke as an air spring would so I think your probably going to be a safe bet to use linear. However there is probably personal choice involved as well where the linear will feel more lively which might get perceived as wild. The progressive will return from deeper in the travel slower so it will have a flatter calmer ride.

you should look up vital mtb test day they did with rockshox on YouTube so you can get a feel or idea of how each behaved on the same bike. They used a megatower in this test but it’s the best example of an a-b test I’ve seen.
 
Discussion starter · #11 ·
Jesse Hill said:
Just thinking about it from the coil spring aspect it won’t kick pack harder returning from deep in the stroke as an air spring would so I think your probably going to be a safe bet to use linear. However there is probably personal choice involved as well where the linear will feel more lively which might get perceived as wild. The progressive will return from deeper in the travel slower so it will have a flatter calmer ride.

you should look up vital mtb test day they did with rockshox on YouTube so you can get a feel or idea of how each behaved on the same bike. They used a megatower in this test but it’s the best example of an a-b test I’ve seen.
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Thank you, great info. I was thinking this all may come down to personal preference. I will definitely check out the video.
 
Discussion starter · #12 ·
petr.sevcik1 said:
Are the progressive tuned shocks really available? I see only linear ones available in German e-shops.
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I am not sure if the progressive tune is available. My local bike shop ordered one in for me, but never asked if I wanted linear or progressive. I am trying to do my own research. I’d prefer not to settle on whichever is available if one is the better option.
 
#13 ·
I am not sure that there is a progressive rebound tune for the new RS UD. I think the progressive and linear options available refer to the air can size. I have only seen linear for sale aftermarket, but many OEMs are using the progressive air cans...and I think any of the 2023 air can models are switchable, if you are doing an upgrade and want to carry that part over.
 
#14 ·
bk12 said:
I am not sure that there is a progressive rebound tune for the new RS UD. I think the progressive and linear options available refer to the air can size. I have only seen linear for sale aftermarket, but many OEMs are using the progressive air cans...and I think any of the 2023 air can models are switchable, if you are doing an upgrade and want to carry that part over.
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There absolutely is a progressive rebound option. Go to their site and look at the ultimate coil under the specifications and you’ll see linear, progressive in the rebound tune section. Also Vital MTB did a rockshox 2023 test day and tested both options back to back.
 
#16 ·
I would go for a progressive rebound tune. Pure anecdotal evidence here, but I have a SDU with an MRP progressive spring, and, on occasion, I feel a need for more rebound damping upon a deep compression such as at the bottom of a huge rock roll. I use plenty of rebound damping, and it works great 99% of the time.

On one occasion this year I went a little too fast down a pretty sizable rock roll with a questionable runout, and nearly got bucked when the shock rebounded. The progressive spring may have had a hand in this, but a progressive rebound tune may have helped.
 
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#17 ·
Yep I’d be interested in trying out a progressive tune as well. I have a 2020 SD with Tractive tune and whatever Vorsprung has done with the rebound is pretty much perfect. I do wish I knew what rebound tune the did on mine
 
Discussion starter · #18 ·
I’ll run it whichever way it comes for now. I am going to run the Spindrex coil. It is progressive and can be adjusted in 5 lb increments vs. most others at 50 lbs (EXT at 25 lbs). My bike has linear suspension travel, so all my research indicates I should have a progressive coil. I can always have the shock rebuilt to a progressive rebound tune later.
 
#19 ·
Cell4soul said:
I’ll run it whichever way it comes for now. I am going to run the Spindrex coil. It is progressive and can be adjusted in 5 lb increments vs. most others at 50 lbs (EXT at 25 lbs). My bike has linear suspension travel, so all my research indicates I should have a progressive coil. I can always have the shock rebuilt to a progressive rebound tune later.
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sprindex is not progressive, just adjustable as you said. If you have a linear leverage curve, may want to use a good calculator and get one progressive spring (non adjustable)
 
#20 ·
Cell4soul said:
I’ll run it whichever way it comes for now. I am going to run the Spindrex coil. It is progressive and can be adjusted in 5 lb increments vs. most others at 50 lbs (EXT at 25 lbs). My bike has linear suspension travel, so all my research indicates I should have a progressive coil. I can always have the shock rebuilt to a progressive rebound tune later.
Click to expand...
It's actually regressive, not progressive. Towards the end of travel it bulges out a bunch due to the rate-adjust mechanism. Tested on dyno.
 
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