Trek rail rear shock upgrade ideas please

[mark022]

I'm new here i would like to ask everyone if someone try this option for the coil shock , Rockshox VIVID coil trunnion mount 205x60 with 25mm shock craft lift kit if the spring or collar of the shock will not touch in between rocker mount?

 

[mark022]

I wanted to fit a Super Deluxe, so I made this yoke to lenghten 205 trunnion to 230. Works good.

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do you think the trunnion coil version will fit?

 

[Paulquattro]

do you think the trunnion coil version will fit?

Trunnion will fit ,
Some rails have trunnion some don't they all use the same rockers thou so there interchangeable with the correct fitting kit

 

[mark022]

I've shamelessly nicked this idea and come up with a MK2 version that bolts straight onto the lower trunnion mount.... View attachment 51411

if put in vivid coil the spring will fi in between the rockers since the shock's body will move up by 25mm?

 

[mark022]

Trunnion will fit ,
Some rails have trunnion some don't they all use the same rockers thou so there interchangeable with the correct fitting kit

The collar and spring will move up there is enough spce in between the rocker?

 

[mark022]

Putting all the info I found in one post.

Trek rail 9.8 2021 Large Came stock with trunion rockshox shock which started leaking in a week.

Installed fox dhx2 230x65. Cannot run in low setting seat post hits. Reservoir clears in both settings.


bolts are 1mm shorter than shock + spacers
Fox mounting hardware. Upper shock bolt is 54mm shock width + 2x8mm spacer plus linkage = 70mm but 69mm bolt


Bolts


TR540755

TR599900

hardware
• Upper: 10mm x 54mm 803-03-311
• Lower: 10mm x 40mm 803-03-329

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on the mounting kit dont use the plastic bushing you need to put the du bushing

 

[mark022]

Trunnion will fit ,
Some rails have trunnion some don't they all use the same rockers thou so there interchangeable with the correct fitting kit

on this area the collar and spring will not touch i will use the normal rockshox spring

 

[HeyHey]

I have asked two retailers for the coil Öhlins shock what to order but does not get a clear answer. One of the reatailers claim that a 65 can be shimmed to 57,5. Maybe one of you can help.

If I order a 65 stroke. Can I shim it down to 57,5 (or 60 if I feel brave)?
How do I do that?

Big thanks!

 

[irie]

I have asked two retailers for the coil Öhlins shock what to order but does not get a clear answer. One of the reatailers claim that a 65 can be shimmed to 57,5. Maybe one of you can help.

If I order a 65 stroke. Can I shim it down to 57,5 (or 60 if I feel brave)?
How do I do that?

Big thanks!

Is your shock trunnion or eye-to-eye?

If eye-to-eye the shims (spacers) are 2.5mm so you can shim the 65 shock down to 62.5, 60.0, and 57.5. Is what I have on my 2022 Trek Rail 5.

 

[HeyHey]

Is your shock trunnion or eye-to-eye?

If eye-to-eye the shims (spacers) are 2.5mm so you can shim the 65 shock down to 62.5, 60.0, and 57.5. Is what I have on my 2022 Trek Rail 5.

Eye to eye. Ok, thanks! Did you get the shims in the box?

 

[irie]

Eye to eye. Ok, thanks! Did you get the shims in the box?

Bought from TF Tuned - came from them with the 3 shims pre-installed so the shock was standard 57.5mm.

Edit: but have since tried 60mm and 62.5mm but have stayed with 57.5mm which works nicely with the forks (Lyrik Ultimate MY23). Am 5'10/75kg with a 525lb spring. Tried a 500lb spring which felt too soft, the 525lb felt better for where I mostly ride (South Downs) so stayed with it.

 

[mark022]

I removed the air can on my superdeluxe to check what (if any) tokens were installed. As it turns out there's a blue spacer underneath the bump stop which is clearly used to limit travel. I've no doubt this could be easily cut off and thus give full stroke. Normally i cross reference the parts catalogue in these situations to make sure things like air cans - damper body's etc are indeed the same. I wasn't brave enough to cut it off just in case something collides internally or there isn't enough clearance in the seat stay bridge at bottom out. To replace the spacer is a FULL strip down job, with all the special tools involved, the main piston is quite an intricate thing!

I was in a bit of a rush to go out riding, so didn't measure the spacer, but 5mm seems about right. Who's going to do it first ?

No volume tokens BTW...

i cut the blue spacer i wrap the stanchion of the shock to make it sure the saw will not touch i cut it both opposite side and if ech side have few MM left i snap it