Rail (625Wh) Trek rail zeb problem

[Johnny P]

Hi, new to EMTB and having issues fitting Zebs to my trek rail size L, I’m no bike mechanic so apologies for descriptions but the base of the fork on the zeb is much wider than the stock fork and won’t go through the headtube without removing the bearing!. I have brought the wrong spec or is there something I can do to make them fit. Thanks for the advice

 

[MBj1703]

On the pic it really looks bigger, but should be 1.5" Taper Steerer as most forks.
Have you changed the crown?

 

[Doomanic]

Is the steerer on the new forks 1.8" instead of 1.5"?

 

[MBj1703]

Is the new Zeb available in 1.8"?
I thought not any more.

 

[Doomanic]

If you put the serial number of both forks into RockShox Setup Guide | SRAM that'll tell you the exact spec of each fork.

 

[Mlopez]

sí, solo ebike ya está disponible

ZEB Select+ - FS-ZEB-SELP-A2 - RockShox

ZEB Select+, FS-ZEB-SELP-A2, RockShox. ZEB is a whole new breed of fork designed to challenge the limits. ZEB Select+ features a stout 38mm chassis with the all-new Charger 3 RC2 damper, ne...

www.sram.com

¿El nuevo Zeb está disponible en 1,8"?
Pensé que ya no.

 

[Doomanic]

Is the new Zeb available in 1.8"?

No idea, but it certainly looks like it.

 

[idunne]

On the pic it really looks bigger, but should be 1.5" Taper Steerer as most forks.
Have you changed the crown?

just measure them with calipers

 

[MBj1703]

just measure them with calipers

?? I don't have any issue

 

[Johnny P]

My Zebs are 1.8”and the 35’s are 1.5”, images show bearings original beatings on both. Is there a race/bearing combination that would work?

 

[MBj1703]

So you bought the wrong one.

 

[Mitch@Trek]

My Zebs are 1.8”and the 35’s are 1.5”, images show bearings original beatings on both. Is there a race/bearing combination that would work?

View attachment 103021 View attachment 103022

Rockshox makes the Zeb in both a 1.8" and 1.5" steerer tube. You would want to return yours and purchase a 1.5" steerer size.

ZEB Ultimate - FS-ZEB-ULT-A1 - RockShox - Service

ZEB Ultimate, FS-ZEB-ULT-A1, RockShox

www.sram.com

Also, you'll love the Zeb once you ride it, such a planted fork on the trail especially coming off a 35.

 

[Spangoolies]

I was under the impression that the trek rail that the op has is one of the bikes that takes a 1.8 steerer? If that’s the case then all he needs is the correct lower bearing and crown race

 

[MBj1703]

sure, he can change the complete headset (nothing Trek special), but I would change the Zeb to a 1.5"

 

[Spangoolies]

sure, he can change the complete headset (nothing Trek special), but I would change the Zeb to a 1.5"

The top should be fine, just the lower bearing and crown race

 

[Doomanic]

I was under the impression that the trek rail that the op has is one of the bikes that takes a 1.8 steerer?

Depends on how you interpret this;

won’t go through the headtube without removing the bearing!

 

[Spangoolies]

Depends on how you interpret this;

I’m guessing that the bearing he has is a step down bearing for a 1.8 lower cup but a 1.5 inner diameter to match his old forks. The 1.8 forks won’t fit through that bearing so a thinner bearing for a 1.8 cup and 1.8 steerer should work if I’m correct

 

[Paulquattro]

I’m guessing that the bearing he has is a step down bearing for a 1.8 lower cup but a 1.5 inner diameter to match his old forks. The 1.8 forks won’t fit through that bearing so a thinner bearing for a 1.8 cup and 1.8 steerer should work if I’m correct

If it has its different to my 2022 rail as mine is a standard 1.5" taper and standard bearing
If this is the case he just has the wrong forks and needs a 1.5" tapered set Not 1.8" set.

 

[JP-NZ]

I was under the impression that the trek rail that the op has is one of the bikes that takes a 1.8 steerer? If that’s the case then all he needs is the correct lower bearing and crown race

I thought all 625wh batt rails are 1.5" headset? Its only the 750wh that are 1.8"

 

[Spangoolies]

I’m not sure, I just see a lot of 1.8 steerer forks for sale from trek rails and have seen posts on here that confirm the larger headtube. As to what specific models I have no clue. The op would have to check up or measure the bottom of the headtube to see if a zs66 bearing and cup would fit. Or change the forks…