MTB Tech Rumors and Innovation

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GnarShred
Posts
25
Joined
4/25/2021
Location
Mars, CA US
9/9/2025 7:22pm
1llumA wrote:

Looks to be pretty much a copy of the SB One G3C chain tensioner that's been available for a few years now.

https://www.sbonebikeparts.com/sb-one-chain-tensioner/dh-chain-tensioner-225.html

Yeah its the same but not the same. Really only minor aesthetic differences and Reverse branding. Assume identical functionality. Still made by SB One hence the “colab” in the product name. Looks sick in silver though but I already have G3C 😁

1
comatosegi
Posts
49
Joined
8/28/2025
Location
Portland, OR US
9/9/2025 11:29pm

Maybe they are doing more work with Crestline?

They have another Avinox release in January, but could they also still release new Bosch frames concurrently? I think diversity is good but it's a lot to...

They have another Avinox release in January, but could they also still release new Bosch frames concurrently? I think diversity is good but it's a lot to manage for a small operation. A lugged frame sure is sexy and from Crestline would be top notch. 

Ran into Troydon last month, they are switching to DJI only.

8
2
jonkranked
Posts
1175
Joined
5/5/2016
Location
Norristown, PA US
9/10/2025 6:14am
Kanista wrote:

https://eu.boxcomponents.com/de/products/box-two-prime-9-gen-2-groupset?variant=49466731036885

I have been waiting for this groupset to arrive. An end is in sight. Love the idea. Hopefully its damn awesome

any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the website. 

1
Javigutz
Posts
43
Joined
10/6/2022
Location
Beverly Hills, CA US
9/10/2025 6:22am
Kanista wrote:

https://eu.boxcomponents.com/de/products/box-two-prime-9-gen-2-groupset?variant=49466731036885

I have been waiting for this groupset to arrive. An end is in sight. Love the idea. Hopefully its damn awesome

jonkranked wrote:
any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the...

any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the website. 

No, just the bmx race ones

jonkranked
Posts
1175
Joined
5/5/2016
Location
Norristown, PA US
9/10/2025 8:07am Edited Date/Time 9/10/2025 8:10am
Kanista wrote:

https://eu.boxcomponents.com/de/products/box-two-prime-9-gen-2-groupset?variant=49466731036885

I have been waiting for this groupset to arrive. An end is in sight. Love the idea. Hopefully its damn awesome

jonkranked wrote:
any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the...

any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the website. 

Javigutz wrote:

No, just the bmx race ones

those have been available for a while. vital was provided a set of the mtb hubs back in 2020, but as far as I could ever tell they were never officially released for public sale. they had been listed on the website, but were always sold out. 

https://www.vitalmtb.com/features/SILENT-INSTANT-New-BOX-Stealth-Hubs,2…

Nobble
Posts
225
Joined
9/24/2010
Location
Lakewood, CO US
9/10/2025 8:53am
jonkranked wrote:
any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the...

any word if their mtb stealth hubs will ever see the light of day? I just looked and it appears they have been delisted from the website. 

Javigutz wrote:

No, just the bmx race ones

jonkranked wrote:
those have been available for a while. vital was provided a set of the mtb hubs back in 2020, but as far as I could ever...

those have been available for a while. vital was provided a set of the mtb hubs back in 2020, but as far as I could ever tell they were never officially released for public sale. they had been listed on the website, but were always sold out. 

https://www.vitalmtb.com/features/SILENT-INSTANT-New-BOX-Stealth-Hubs,2…

My guess is that Box ran into issues with durability and cost/tolerances then decided it wasn’t worthwhile.

I don’t think sprag/roller clutch type hubs are ever really going to be mainstream for MTB applications. Big cassettes and 29” wheels can put a ton of torque on a drive system.


Sprag/roller clutch type hubs are really intolerant of bad tolerances and contamination. They also generate some pretty extreme internal forces (who remembers Vesper freehub bodies?)


Some of the issues can be solved by adding cost/weight, but the vast majority of people don’t want to pay more for extra unsprung mass. Looking at the current offerings, a Classic Onyx hub is over 100g heavier than a Hope Pro 5 and nearly double the price.

2
Etney
Posts
113
Joined
12/23/2024
Location
Frankfurt DE
9/10/2025 9:15am

Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAM

Apparently there is a new update coming any day now that is supposed to speed up shifting, similar to XPLR speeds.

Not sure how it will work, since afaik its designed to shift only at the ramp in the casette to shift smoothly even under full power. Dont know how increased speed will affect that. 

12
dwhere
Posts
187
Joined
10/5/2023
Location
dirty, DE US
9/10/2025 9:42am

Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical and lost all support from the front. In the video just before his crash, he bottoms it out a few times almost like he lost the spring or damper. But then looked fine after. Did those fancy electronics malfunction? 

15
segamethod
Posts
70
Joined
4/26/2024
Location
Anaheim, CA US
9/10/2025 9:55am Edited Date/Time 9/10/2025 9:56am
Etney wrote:
Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAMApparently there is a new update coming any day...

Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAM

Apparently there is a new update coming any day now that is supposed to speed up shifting, similar to XPLR speeds.

Not sure how it will work, since afaik its designed to shift only at the ramp in the casette to shift smoothly even under full power. Dont know how increased speed will affect that. 

The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position, torque, or anything else going on -- so it's simply not a real thing. It was just rate limited to make sure us hoons didn't blow up chains too quickly. The existence of Transmission mechanical groupsets is evidence enought that you can bang shifts as fast as you want and things are hunky dorry.

21
1
motomike
Posts
93
Joined
10/12/2009
Location
Linville, NC US
9/10/2025 10:11am
Etney wrote:
Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAMApparently there is a new update coming any day...

Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAM

Apparently there is a new update coming any day now that is supposed to speed up shifting, similar to XPLR speeds.

Not sure how it will work, since afaik its designed to shift only at the ramp in the casette to shift smoothly even under full power. Dont know how increased speed will affect that. 

Thanks!  I just looked and the update was available in the app.  Shifts fast as hell now!

8
9/10/2025 10:43am
dwhere wrote:
Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical...

Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical and lost all support from the front. In the video just before his crash, he bottoms it out a few times almost like he lost the spring or damper. But then looked fine after. Did those fancy electronics malfunction? 

I was also wondering what it could have been. If you watch his fork when he hops into the steep left-hander that he crashed on, the fork fully bottoms out and looks like the normal support he expected disappeared. Then his upper body collapsed forward and he ended up crashing - I think it's pretty obvious something malfunctioned. My first thought went to something going awry with the clickers that I know nothing about. 

2
AndehM
Posts
597
Joined
5/7/2018
Location
El Granada, CA US
9/10/2025 10:54am
dwhere wrote:
Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical...

Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical and lost all support from the front. In the video just before his crash, he bottoms it out a few times almost like he lost the spring or damper. But then looked fine after. Did those fancy electronics malfunction? 

I was also wondering what it could have been. If you watch his fork when he hops into the steep left-hander that he crashed on, the...

I was also wondering what it could have been. If you watch his fork when he hops into the steep left-hander that he crashed on, the fork fully bottoms out and looks like the normal support he expected disappeared. Then his upper body collapsed forward and he ended up crashing - I think it's pretty obvious something malfunctioned. My first thought went to something going awry with the clickers that I know nothing about. 

Yeah I noticed that too.  He's known for having really active suspension, but at that spot it looks like the fork completely bottoms out unexpectedly, like the damping went totally wide open or he lost a ton of pressure.

9/10/2025 10:56am
motomike wrote:

Thanks!  I just looked and the update was available in the app.  Shifts fast as hell now!

What's the number of the latest version? 2.37.0

JVP
Posts
207
Joined
4/20/2016
Location
Seattle, WA US
9/10/2025 10:56am
dwhere wrote:
Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical...

Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical and lost all support from the front. In the video just before his crash, he bottoms it out a few times almost like he lost the spring or damper. But then looked fine after. Did those fancy electronics malfunction? 

It looks like he lost compression damping. Even riding at my non-racer level, I've blown a compression circuit and it behaved just like that.

While watching the race I noticed somehting was off with his fork right before he crashed. He was suuuuper deep in travel for a couple seconds before he crashed.

3
9/10/2025 11:08am Edited Date/Time 9/10/2025 11:10am
motomike wrote:

Thanks!  I just looked and the update was available in the app.  Shifts fast as hell now!

What's the number of the latest version? 2.37.0

chriskief wrote:

Oh, right. I gotta connect to each component to update individually. I was referencing the iphone app software version. Thanks  

lickmycrinkle
Posts
210
Joined
1/27/2021
Location
Beverly Hills, CA US
9/10/2025 1:21pm
dwhere wrote:
Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical...

Do any of you nerds have a theory on what happened with Loic’s fork on his world champs race run? He said he had a mechanical and lost all support from the front. In the video just before his crash, he bottoms it out a few times almost like he lost the spring or damper. But then looked fine after. Did those fancy electronics malfunction? 

I think it beeped when it should have booped.

23
brash
Posts
941
Joined
4/24/2019
Location
AU
9/10/2025 2:35pm

Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled. Who knows. 

That fork did look kind of funny, but Loic has always ran his fork very open from my calibrated eyeballs.

2
2
9/11/2025 3:34am
brash wrote:
Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled...

Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled. Who knows. 

That fork did look kind of funny, but Loic has always ran his fork very open from my calibrated eyeballs.

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs.

 I could buy the logic that Loic has some delicate or fiddly prototype technology in those forks that probably just gave out during the run.

1
3
boozed
Posts
644
Joined
6/11/2019
Location
AU
9/11/2025 3:46am
brash wrote:
Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled...

Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled. Who knows. 

That fork did look kind of funny, but Loic has always ran his fork very open from my calibrated eyeballs.

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs. I could...

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs.

 I could buy the logic that Loic has some delicate or fiddly prototype technology in those forks that probably just gave out during the run.

The podcast selector on his handlebar could have malfunctioned

1
1
AJW1
Posts
72
Joined
5/11/2023
Location
Bracknell GB
9/11/2025 4:09am Edited Date/Time 9/11/2025 4:10am
brash wrote:
Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled...

Someone on PB said it could be a ruse and that a "mechanical" was the reason for his mistake, rather than letting JG know he crumbled. Who knows. 

That fork did look kind of funny, but Loic has always ran his fork very open from my calibrated eyeballs.

Got no figures to back this up but purely from my memory, Bruni has crashed while being: 

a) last to drop

and

b) ahead on split time

more than any other racer in history.

Thats more of a compliment of how often he actually gets himself into that situation (and that he is so close to the edge of whats possible), rather than a critisism.

I don't think he's ever blamed the team, the bike, the components, the mechanic or anyone but himself.

18
1
9/11/2025 9:22am
He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs. I could...

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs.

 I could buy the logic that Loic has some delicate or fiddly prototype technology in those forks that probably just gave out during the run.

What does French style refer to...?

7
comatosegi
Posts
49
Joined
8/28/2025
Location
Portland, OR US
9/11/2025 9:54am
Etney wrote:
Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAMApparently there is a new update coming any day...

Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAM

Apparently there is a new update coming any day now that is supposed to speed up shifting, similar to XPLR speeds.

Not sure how it will work, since afaik its designed to shift only at the ramp in the casette to shift smoothly even under full power. Dont know how increased speed will affect that. 

segamethod wrote:
The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position...

The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position, torque, or anything else going on -- so it's simply not a real thing. It was just rate limited to make sure us hoons didn't blow up chains too quickly. The existence of Transmission mechanical groupsets is evidence enought that you can bang shifts as fast as you want and things are hunky dorry.

I talked to a SRAM PM about that.  T-Type knows how many shift ramps there are per a gear, so it changes shift timing delay based on gear.

10
9/11/2025 9:56am
He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs. I could...

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs.

 I could buy the logic that Loic has some delicate or fiddly prototype technology in those forks that probably just gave out during the run.

What does French style refer to...?

In a nutshell: a suspension setup with a soft, but progressive spring setup with firm compression damping and fast rebound.

A bit different than the historic, stereotypical elite racer setup – extra firm everything.

14
segamethod
Posts
70
Joined
4/26/2024
Location
Anaheim, CA US
9/11/2025 10:04am Edited Date/Time 9/11/2025 12:19pm
Etney wrote:
Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAMApparently there is a new update coming any day...

Maybe not the most interesting news but - For you who run the AXS Transmission groupset from SRAM

Apparently there is a new update coming any day now that is supposed to speed up shifting, similar to XPLR speeds.

Not sure how it will work, since afaik its designed to shift only at the ramp in the casette to shift smoothly even under full power. Dont know how increased speed will affect that. 

segamethod wrote:
The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position...

The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position, torque, or anything else going on -- so it's simply not a real thing. It was just rate limited to make sure us hoons didn't blow up chains too quickly. The existence of Transmission mechanical groupsets is evidence enought that you can bang shifts as fast as you want and things are hunky dorry.

comatosegi wrote:
I talked to a SRAM PM about that.  T-Type knows how many shift ramps there are per a gear, so it changes shift timing delay based...

I talked to a SRAM PM about that.  T-Type knows how many shift ramps there are per a gear, so it changes shift timing delay based on gear.

Interesting, but it doesn't know your cadence, so this is an approximation at best. I'm sure most riders are operating in a predictable cadence range, so it's likely better than nothing. Nevertheless, the root of this discussion is the news that they removed/increased said shift speed limitation.

2
Jotegr
Posts
339
Joined
6/28/2024
Location
Interior, BC CA
9/11/2025 10:26am
He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs. I could...

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs.

 I could buy the logic that Loic has some delicate or fiddly prototype technology in those forks that probably just gave out during the run.

What does French style refer to...?

In a nutshell: a suspension setup with a soft, but progressive spring setup with firm compression damping and fast rebound.A bit different than the historic, stereotypical...

In a nutshell: a suspension setup with a soft, but progressive spring setup with firm compression damping and fast rebound.

A bit different than the historic, stereotypical elite racer setup – extra firm everything.

And here I thought it meant cutting corners 

18
dwhere
Posts
187
Joined
10/5/2023
Location
dirty, DE US
9/11/2025 10:28am
He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs. I could...

He runs his suspension French style. I helped my enduro racer friend set up his bike like that and he's set a bunch of KoMs.

 I could buy the logic that Loic has some delicate or fiddly prototype technology in those forks that probably just gave out during the run.

What does French style refer to...?

You ever heard of froggy style? It’s kinda like that. 

3
comatosegi
Posts
49
Joined
8/28/2025
Location
Portland, OR US
9/11/2025 10:39am
segamethod wrote:
The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position...

The "only shifts at the ramps" thing is a myth that SRAM isn't going out of their way to correct. There is no sensing of position, torque, or anything else going on -- so it's simply not a real thing. It was just rate limited to make sure us hoons didn't blow up chains too quickly. The existence of Transmission mechanical groupsets is evidence enought that you can bang shifts as fast as you want and things are hunky dorry.

comatosegi wrote:
I talked to a SRAM PM about that.  T-Type knows how many shift ramps there are per a gear, so it changes shift timing delay based...

I talked to a SRAM PM about that.  T-Type knows how many shift ramps there are per a gear, so it changes shift timing delay based on gear.

segamethod wrote:
Interesting, but it doesn't know your cadence, so this is an approximation at best. I'm sure most riders are operating in a predictable cadence range, so...

Interesting, but it doesn't know your cadence, so this is an approximation at best. I'm sure most riders are operating in a predictable cadence range, so it's likely better than nothing. Nevertheless, the root of this discussion is the news that they removed/increased said shift speed limitation.

Yeah, just ran the update, it’s noticeably quicker.

With old software, if I was in wrong gear, the slower cadence def reduced shift quality.

1
senorbanana
Posts
53
Joined
2/27/2019
Location
San Jose, CA US
9/11/2025 10:40am
IMG 1325
4
1
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