MTB Tech Rumors and Innovation

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6/15/2025 10:56am

I love 29+, I've had 5 bikes set up that way, starting with an OG ECR 10+ years ago. My current #1 is a Stooge rolling on 29x3.25 and 29x3 rubber, and I've won a couple local taxes like that. It can be surprisingly fast, and if you're into building weird rigid bikes, it's a suspension cheat code.

 

27.5+...never got along with. Less roll over, no perceivable, to me, benefit with the smaller/lighter wheel. When I'm not on a weirdo bike, 29er all the way...I've been that way for 15 years 

8
AgrAde
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., BV
6/15/2025 4:55pm Edited Date/Time 6/15/2025 4:56pm

I remember these exact arguments against 29, which has been said in this thread multiple times. Lol!

They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to 2400g fox 38s and 2200g boost wheel sets on our 29" enduro bikes. Where do we go once we have 32"?

7
4
6/15/2025 5:35pm
AgrAde wrote:
Making a 32" fork and wheel stiff enough to ride well on trail under an XL rider will be really difficult. XC riders can put up...

Making a 32" fork and wheel stiff enough to ride well on trail under an XL rider will be really difficult. XC riders can put up with a lot but trail riders will probably be wanting a 38 or equivalent for their 140mm bikes...

Primoz wrote:

Oooh, good point. Since spoke bracing angles are getting shallower with larger wheels... Sounds like wider hubs will be needed 😜

It will be interesting to see what will happen with hub spacing. With wheel manufacturers creating a variety of wheelsets ranging from super stiff to soft and compliant, maybe the current boost spacing will be fine. Maybe SuperBoost will actually get widespread adoption? Or 150/177 will become the norm since that exists for fat bikes. My understanding is DirtySixer is using 150/197 on their bikes currently. 

3
megastoke
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La Grande, OR, USA
6/15/2025 7:56pm

I think 32" might actually offer significant speed and comfort advantages for marathon XC, bikepacking, gravel, 4x4 road exploring and the like, at least for riders who can make the big wheel bike fit work. For instance, I'm almost certain 32" would be faster and more comfortable on something like the White Rim in a Day, and I can totally envision people racing Tour Divide on 32" Mezcals and Race Kings.

On the other hand, I doubt we will ever see broad adoption of 32" wheels for the type of riding that most of the Vital crowd does. Maybe I'm wrong, but it just doesn't seem likely to me, for a number of reasons, most of which have already been made like five times by other posters.

10
metadave
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Revelstoke, BC, CA
Fantasy
6/15/2025 11:02pm
megastoke wrote:
I think 32" might actually offer significant speed and comfort advantages for marathon XC, bikepacking, gravel, 4x4 road exploring and the like, at least for riders...

I think 32" might actually offer significant speed and comfort advantages for marathon XC, bikepacking, gravel, 4x4 road exploring and the like, at least for riders who can make the big wheel bike fit work. For instance, I'm almost certain 32" would be faster and more comfortable on something like the White Rim in a Day, and I can totally envision people racing Tour Divide on 32" Mezcals and Race Kings.

On the other hand, I doubt we will ever see broad adoption of 32" wheels for the type of riding that most of the Vital crowd does. Maybe I'm wrong, but it just doesn't seem likely to me, for a number of reasons, most of which have already been made like five times by other posters.

If I rode a 32" wheel, my seat wouldn't clear the top 😅

Also, it sounds like a few large brands are cutting MTB fat in a big way, some cutting 1-2 models in there lines. XC bike/trail bike/DH bike situation and one doing some weird multi-travel options. U-turn Zebs?

All the MTB money if funneling into ebikes and drop bar like it's 2006 again. 

3
1
sethimus
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CH
6/15/2025 11:20pm Edited Date/Time 6/15/2025 11:22pm
AgrAde wrote:
They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to...

They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to 2400g fox 38s and 2200g boost wheel sets on our 29" enduro bikes. Where do we go once we have 32"?

no, we came from 2.9kg marzocchi 66s

11
AgrAde
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., BV
6/16/2025 12:27am Edited Date/Time 6/16/2025 12:28am

I was going for "Fox products that enduro teams were running and that were marketed as enduro products for the masses", to try have some parity, but you're not wrong.

The last 26" 36 is a fairly stiff chassis. Those Marz were great though.

2
29
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AT
6/16/2025 2:01am Edited Date/Time 6/16/2025 2:03am

Some more shots from the Fox USD at Leogang:

DSC06328

 

DSC06326.jpg?VersionId=T2RLMiHjJQcfkzoaC5LDSC06325

 

And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with the round holes and another one with a lot bigger cutouts:

DSC06338DSC06337DSC06336

 

There was also this raw alloy shim on the rear axle of Finn Iles' Levo which I have no idea about.

16
Evil96
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Portogruaro, VE, IT
6/16/2025 3:18am
29 wrote:
Some more shots from the Fox USD at Leogang:  And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with...

Some more shots from the Fox USD at Leogang:

DSC06328

 

DSC06326.jpg?VersionId=T2RLMiHjJQcfkzoaC5LDSC06325

 

And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with the round holes and another one with a lot bigger cutouts:

DSC06338DSC06337DSC06336

 

There was also this raw alloy shim on the rear axle of Finn Iles' Levo which I have no idea about.

Damn can’t imagine spending 100€+ for a rotor and it rusts like that 🙄

That usd fork looks ready to be released

7
1
6/16/2025 5:50am
AgrAde wrote:
Making a 32" fork and wheel stiff enough to ride well on trail under an XL rider will be really difficult. XC riders can put up...

Making a 32" fork and wheel stiff enough to ride well on trail under an XL rider will be really difficult. XC riders can put up with a lot but trail riders will probably be wanting a 38 or equivalent for their 140mm bikes...

Primoz wrote:

Oooh, good point. Since spoke bracing angles are getting shallower with larger wheels... Sounds like wider hubs will be needed 😜

It will be interesting to see what will happen with hub spacing. With wheel manufacturers creating a variety of wheelsets ranging from super stiff to soft...

It will be interesting to see what will happen with hub spacing. With wheel manufacturers creating a variety of wheelsets ranging from super stiff to soft and compliant, maybe the current boost spacing will be fine. Maybe SuperBoost will actually get widespread adoption? Or 150/177 will become the norm since that exists for fat bikes. My understanding is DirtySixer is using 150/197 on their bikes currently. 

The hub width thing isn't something I considered at first until talking to some fork manufacturers at the Taipei Show this year. The consensus seemed to be that 110mm wasn't wide enough, but no clear idea on what the ideal width would be. 

It sill seems crazy to me, I'm of a similar mind to @kperras on this whole thing, but it's happening and the ones really pushing for it aren't necessarily the long leg gang. 

Our 32x2.40 Aspen is 12% heavier than our 29x2.40 Aspen in the same construction. Now think about everything else that is going to get heavier too: larger rim, longer spokes, wider hub, wider axle, longer fork, etc...

11
krabo83
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AT
6/16/2025 6:44am Edited Date/Time 6/16/2025 7:01am
Evil96 wrote:

Damn can’t imagine spending 100€+ for a rotor and it rusts like that 🙄

That usd fork looks ready to be released

that‘s pretty normal when you‘re riding in an area near the sea because of the salty air. my rotors looked almost like that after just 10 days of riding in tuscany (punta alla, castiglione, etc) 2 years ago.

4
2
AndehM
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El Granada, CA, USA
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6/16/2025 6:53am
Evil96 wrote:

Damn can’t imagine spending 100€+ for a rotor and it rusts like that 🙄

That usd fork looks ready to be released

krabo83 wrote:
that‘s pretty normal when you‘re riding in an area near the sea because of the salty air. my rotors looked almost like that after just 10...

that‘s pretty normal when you‘re riding in an area near the sea because of the salty air. my rotors looked almost like that after just 10 days of riding in tuscany (punta alla, castiglione, etc) 2 years ago.

I think something else is messing with his rotors.  I have the same ones on 3 bikes and live/ride within a quarter mile of the Pacific ocean, and have never had rusty rotors.  Bearings yes, brake backer pads yes, ODI grip bolts yes, but rotors no.  I do get a bit of pad discoloration on those shark fins, but not rust.

3
6/16/2025 6:57am
29 wrote:
Some more shots from the Fox USD at Leogang:  And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with...

Some more shots from the Fox USD at Leogang:

DSC06328

 

DSC06326.jpg?VersionId=T2RLMiHjJQcfkzoaC5LDSC06325

 

And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with the round holes and another one with a lot bigger cutouts:

DSC06338DSC06337DSC06336

 

There was also this raw alloy shim on the rear axle of Finn Iles' Levo which I have no idea about.

At the back of Finns bike is an adapter for the roller to warm up 

3
6/16/2025 7:02am Edited Date/Time 6/16/2025 7:04am
AgrAde wrote:
They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to...

They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to 2400g fox 38s and 2200g boost wheel sets on our 29" enduro bikes. Where do we go once we have 32"?

They were too flexy then and they aren't now. It's also offset by the fact frames are lighter now as well. 26" bikes and their wheelsets were so heavy, I compare my set of 26" Sun Ringle Mtx to a set of Stan's flow, the 26" set is heavier, and the rims are still cracked.

Think how much lighter a modern through axle boost hub can be compared to an older quick release hub with chunky axles too. Things are heavier now compared to 5 years ago, sure, but when you compare them to 26" bikes or the first wave of 27.5" bikes they're a whole lot lighter. 

4
lando
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Location
Missoula, MT, USA
6/16/2025 7:30am
29 wrote:
Some more shots from the Fox USD at Leogang:  And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with...

Some more shots from the Fox USD at Leogang:

DSC06328

 

DSC06326.jpg?VersionId=T2RLMiHjJQcfkzoaC5LDSC06325

 

And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with the round holes and another one with a lot bigger cutouts:

DSC06338DSC06337DSC06336

 

There was also this raw alloy shim on the rear axle of Finn Iles' Levo which I have no idea about.

Evil96 wrote:

Damn can’t imagine spending 100€+ for a rotor and it rusts like that 🙄

That usd fork looks ready to be released

Does anyone have it on good authority that this fork will actually be released 6/24, as previously stated in this thread?

cababike
Posts
2
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Location
Singapore, SG
6/16/2025 7:51am
29 wrote:
Some more shots from the Fox USD at Leogang:  And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with...

Some more shots from the Fox USD at Leogang:

DSC06328

 

DSC06326.jpg?VersionId=T2RLMiHjJQcfkzoaC5LDSC06325

 

And seems like Specialized is running two different brake discs for the Brembos, the Hope-ish looking one with the round holes and another one with a lot bigger cutouts:

DSC06338DSC06337DSC06336

 

There was also this raw alloy shim on the rear axle of Finn Iles' Levo which I have no idea about.

USD fork, USD rotors, what else can we reverse?

About Galfer Sharks, I had a pair that rusted too, no other rotors I've owned ever did 🤷‍♂️

2
ballz
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Ouagadougou, EH
6/16/2025 7:59am
AgrAde wrote:
They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to...

They were correct then and they're correct now. We've gone from 1800g fox 36s and 1800g non boost wheel sets on our 26" enduro bikes to 2400g fox 38s and 2200g boost wheel sets on our 29" enduro bikes. Where do we go once we have 32"?

They were too flexy then and they aren't now. It's also offset by the fact frames are lighter now as well. 26" bikes and their wheelsets...

They were too flexy then and they aren't now. It's also offset by the fact frames are lighter now as well. 26" bikes and their wheelsets were so heavy, I compare my set of 26" Sun Ringle Mtx to a set of Stan's flow, the 26" set is heavier, and the rims are still cracked.

Think how much lighter a modern through axle boost hub can be compared to an older quick release hub with chunky axles too. Things are heavier now compared to 5 years ago, sure, but when you compare them to 26" bikes or the first wave of 27.5" bikes they're a whole lot lighter. 

Whole lot lighter? My wife's Mojo HD disagrees. (that bike will never die, unlike it's bearings)

6/16/2025 8:46am
Moto Max is teasing a new bike on his insta. Can we rub our brain cells together to figure out what it could be?https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyNzIyaQ==

Moto Max is teasing a new bike on his insta. 

Can we rub our brain cells together to figure out what it could be?

https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyN…

Pretty sure it's a Chromag 

3
sollie
Posts
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Location
Longmont, CO, USA
6/16/2025 8:58am
The hub width thing isn't something I considered at first until talking to some fork manufacturers at the Taipei Show this year. The consensus seemed to...

The hub width thing isn't something I considered at first until talking to some fork manufacturers at the Taipei Show this year. The consensus seemed to be that 110mm wasn't wide enough, but no clear idea on what the ideal width would be. 

It sill seems crazy to me, I'm of a similar mind to @kperras on this whole thing, but it's happening and the ones really pushing for it aren't necessarily the long leg gang. 

Our 32x2.40 Aspen is 12% heavier than our 29x2.40 Aspen in the same construction. Now think about everything else that is going to get heavier too: larger rim, longer spokes, wider hub, wider axle, longer fork, etc...

20% heavier wheels is like 2 or 3 pounds. For tall riders that is absolutely negligible. It's a small market, and maybe too small to be viable, but if short people have 24", 26", and 27.5" wheel options, I don't see the harm in letting people over 6'4" have an additional choice. I'm 6'7" and people are constantly asking me if my bikes are 27.5 since the wheels look comically undersized versus the frame. I'd happily try a little extra weight to see if a larger wheel diameter helps compensate for my higher center of gravity. 

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1
6/16/2025 9:27am Edited Date/Time 6/16/2025 9:39pm
Moto Max is teasing a new bike on his insta. Can we rub our brain cells together to figure out what it could be?https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyNzIyaQ==

Moto Max is teasing a new bike on his insta. 

Can we rub our brain cells together to figure out what it could be?

https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyN…

Robbie420 wrote:

Pretty sure it's a Chromag 

I’m fairly certain that’s the new air drop that is about to drop. Rocker link and headtube junction match. You can practically see the airdrop badge under the tape. 

Edit: i stand corrected

3
sprungmass
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Calgary, AB, CA
6/16/2025 10:15am
Moto Max is teasing a new bike on his insta. Can we rub our brain cells together to figure out what it could be?https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyNzIyaQ==

Moto Max is teasing a new bike on his insta. 

Can we rub our brain cells together to figure out what it could be?

https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyN…

The covered head badge looks like the Chromag. Could possibly be their new 170/160 alloy enduro bike. The resemblance to RAAW bikes is uncanny.

4
w4s
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Location
Verdi, NV, USA
6/16/2025 10:46am Edited Date/Time 6/16/2025 10:48am
Moto Max is teasing a new bike on his insta. Can we rub our brain cells together to figure out what it could be?https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyNzIyaQ==

Moto Max is teasing a new bike on his insta. 

Can we rub our brain cells together to figure out what it could be?

https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyN…

sprungmass wrote:

The covered head badge looks like the Chromag. Could possibly be their new 170/160 alloy enduro bike. The resemblance to RAAW bikes is uncanny.

the first picture of the post is literally tagged Chromag.

7
6/16/2025 10:57am

HEY HEY HEY!
Stop the Presses!
Have you guys heard that Industry Nine bought WAO? 


jeez. I have not seen such a lame media blitz since 5DEV made the revolutionary discovery that cranks can be shorter than 175mm


But seriously, I wish the boys at WAO all the best.



 

29
ebruner
Posts
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Location
Tustin, CA, USA
6/16/2025 11:38am

I'm only 6'3", but I could easily see that a 32/29 mullet being a game changer for people 6'1" and above.  I find that most people my height have a bit more of a take-it or leave-it approach to a mixed wheel setup.  It has always made me wonder if really what is going on is that the additional leverage and inseam length means that tall people can man handle a 29r rear wheel the same way a shorter person can handle a 27.5.  If I assume that's true, it means to me, that the giant's amongst us, would be even happier with a larger front wheel then what is available now matched with a 29r rear wheel.  

On that subject, I feel like a 32/29 mullet xc bike might be an interesting proposition.  A heavier front tire/wheel isn't anywhere as impactful as a heavier drive tire/wheel.  

That being said, I want to go back into the wheelsize war era of mountain biking about as much as I desire going to the dentist.  What's old is new again, pick your favorite wheel/tire size and be a dick about it.  

1
6/16/2025 3:28pm

Other site has GW launching a 32" wheelset- with an "interesting" marketing photo

GW GLORY WHEEL 32" XC aluminun sleeved joint rim, inlarge flange, 715 hub, J Bend

6/16/2025 4:24pm
Moto Max is teasing a new bike on his insta. Can we rub our brain cells together to figure out what it could be?https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyNzIyaQ==

Moto Max is teasing a new bike on his insta. 

Can we rub our brain cells together to figure out what it could be?

https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyN…

photo-output

My money's for sure on Chromag

18
sspomer
Posts
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Location
Boise, ID, USA
Fantasy
6/16/2025 4:48pm

@TEAMROBOT met up with Fabien Barel to talk about their FrankenMule in Leogang. 

5
6/16/2025 5:42pm Edited Date/Time 6/16/2025 6:29pm
sspomer wrote:

@TEAMROBOT met up with Fabien Barel to talk about their FrankenMule in Leogang. 

I was always curious how such a heavy bike could be used to tune suspension, since I would imagine the suspension behaviour is dependent in some ways on weight.

 

Unless there is some kind of scaling that can be done, which wouldn't surprise me since physics is the closest thing to magic

1
jazza_wil
Posts
96
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5/10/2011
Location
whistler, BC, CA
6/16/2025 6:46pm
Moto Max is teasing a new bike on his insta. Can we rub our brain cells together to figure out what it could be?https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyNzIyaQ==

Moto Max is teasing a new bike on his insta. 

Can we rub our brain cells together to figure out what it could be?

https://www.instagram.com/p/DK7ODT0Rr3n/?img_index=1&igsh=MW13MDRtZWpyN…

ewebster wrote:
My money's for sure on Chromag

photo-output

My money's for sure on Chromag

Looks like the same frame he was on earlier this year when he did his Achilles. IMG 1123 0

6
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