Trek rail rear shock upgrade ideas please

Oupy

Member
Feb 22, 2022
63
48
Australia
Likely need trunnion mounting to make it fit. Not sure which Rail models are compatible with trunnion though. Might be the carbon ones only?
 

Antti525

Member
Jun 6, 2022
3
0
Finland
IMG20220609171848.jpg

I made a 5mm spacer to reduce the stroke to 57.5mm. This is me just sitting on the bike and the gap to frame is 3mm. I couldn't make the shock to touch the frame by bouncing on the seat but that's not a real world test.
 

Slapbassmunky

Active member
Aug 1, 2020
279
289
Isle of wight
Does anyone know what the dynamic oil pressures can reach in a coil shock, I know it sits at 200psi +/- static. I'm having thoughts of tinkering with the upper housing of a regular DVO jade. I don't like levers, I do like proper high and low speed compression damping. The amount of actual fluid transferred to the piggy back is minimal, maybe 10ml, but this is easily calculated. Its peak pressure that could be the deal breaker.
 

ckkone

Member
May 21, 2021
11
3
UTAH USA
Waiting to see if the new Deluxe Coil Select is any good.. looks like it should fit with no issues. Comes in 230x57.5, 230x60, 230x62.5, 230x65.... Standard and trunnion mounts.


1654883671857.png
 

Slapbassmunky

Active member
Aug 1, 2020
279
289
Isle of wight
Waiting to see if the new Deluxe Coil Select is any good.. looks like it should fit with no issues. Comes in 230x57.5, 230x60, 230x62.5, 230x65.... Standard and trunnion mounts.


View attachment 89948
Could be a decent basic shock, the compression tune would need to be spot on as there's no adjustability. No doubt they'll come with a stock MM tune for aftermarket. If they come as OEM then people will look to upgrade making this possibly a very.good cheap shock for the tuners out there.
 

Beamishblue

Member
Sep 20, 2020
8
5
Scotland
I have a 2021 9.8 XT and I’m going to send the suspension off for a service soon. I’ll probably get the Zeb bumped up to 170mm travel but I’ve heard folk on here also increase the travel in the rear. Would it be possible for my RS Super Deluxe shock to be changed from 230x57.5 to 230x60? My frame is an XL. Has anyone done this to their Rail with this shock?
 

Slapbassmunky

Active member
Aug 1, 2020
279
289
Isle of wight
I have a 2021 9.8 XT and I’m going to send the suspension off for a service soon. I’ll probably get the Zeb bumped up to 170mm travel but I’ve heard folk on here also increase the travel in the rear. Would it be possible for my RS Super Deluxe shock to be changed from 230x57.5 to 230x60? My frame is an XL. Has anyone done this to their Rail with this shock?
 

Mr Dog

Member
Sep 26, 2021
79
63
Switzerland
I made a 5mm spacer to reduce the stroke to 57.5mm. This is me just sitting on the bike and the gap to frame is 3mm. I couldn't make the shock to touch the frame by bouncing on the seat but that's not a real world test.

Thanks for that. This is something I was wondering about as I look for a new shock for my Rail. Looks very close at 57.5mm stroke. Any idea if the air versions have smaller piggy backs or have them oriented differently to the coil? Im still between air and coil but leaning towards air as I like the versatility for my Rail as it is my do it all bike.

With that amount of clearance I may even be tempted to try it. My Rail is pretty beat up at this point. Im a RS fan and these new shocks look very good. I just upgraded to the 2023 ZEB Ultimate on the front would be nice to match it on the rear.
 

Juise

New Member
Aug 23, 2022
37
17
Finland
Anyone Else here with öhlins ttx1air?

Just installed it yesterday, but can't get to test it until new fork shows up.

Ttx1 fits easily but i'm wondering that my shock can says 250psi max and the manual says 300psi max.. Do i have some early iteration of the ttx1 or what gives?
 
Last edited:

BiGJZ74

E*POWAH Master
Subscriber
Mar 17, 2021
534
418
American Canyon, CA
Anyone Else here with öhlins ttx1air?

Just installed it yesterday, nut cat get to test it until new fork shows up.

Ttx1 fits easily but i'm wondering that my shock can says 250psi max and the manual says 300psi max.. Do i have some early iteration of the ttx1 or what gives?
Weird, Ohlins website says 300 Max psi, but if you zoon in on the product photo you can see on the cans warning label it says 250
 

Juise

New Member
Aug 23, 2022
37
17
Finland
Weird, Ohlins website says 300 Max psi, but if you zoon in on the product photo you can see on the cans warning label it says 250
Well, i sent a question to the local official öhlins dealer for them to ask the factory.

Nice thing to see that they actually support using oil as air spacer, so no need to disassemble the shock from the bike.
 

Juise

New Member
Aug 23, 2022
37
17
Finland
Well, i sent a question to the local official öhlins dealer for them to ask the factory.

Nice thing to see that they actually support using oil as air spacer, so no need to disassemble the shock from the bike.

Got a reply from Öhlins that the max. pressure for ttx1air is 300psi. So i guess the sticker on the shock is old info they didn't bother updating
 

Tony tan

New Member
Sep 4, 2022
12
0
Malaysia
Does any one experience on S size 2022/23 rail 9.7, is it suitable fit on Fox Float X2 Kashima Trunnion Shock 230x60 ?
Beside,
S size 2022/23 rail 9.7 is same geometry?

Screenshot_20220906-014404_Samsung Internet.jpg
 

SandroRiz

Member
Sep 6, 2022
31
13
Italy
Anyone has installed on a Rail 9.8Xt 2022 (750wh, like Rob's) Size M ? Any chance with any brand? Maybe without piggy back?

Mine is already very close to touch the water bottle, and I would be sorry not to be able to use it anymore
(sorry for bad photo quality)

Screenshot 2022-09-07 185817.jpg
 

Tony tan

New Member
Sep 4, 2022
12
0
Malaysia
Finally got correct mounting hardware, fits great on Med frame with Reb adjuster on rear at the bottom. Mine came with the LS spring too.
For those asking about the stroke printed on the Jade they are a standard 65mm but use the bottom spring perch to alter stroke by supplying diff thicknesses for application.
Looking forward to trying it out, yes I fitted to a dirty bike haha, had just got back from ride and parts turned up.....couldn't wait ?

View attachment 36892
Hi bro, I saw you use 500x2.5 spring, may I know what is your weight? and you always perform enduro trail or DH jumping?
 

Tony tan

New Member
Sep 4, 2022
12
0
Malaysia
After trying to make a Rockshox Super Deluxe coil work with no luck, I ended up going with a Fox X2 and am super happy. Super plush and a ton of adjustment. Fox 38 or 2:1 Charger up front next.

View attachment 73983
May I know do you investigate before? Is it can fit on fox38? Because the head tube bottom size is biggest then normal head tube...I worry can't get the head set match for fox38, I'm not sure..
 

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