2026 MTB Tech Rumors and Innovation - Longer and Slacker

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Eae903
Posts
371
Joined
10/20/2023
Location
Laramie, WY US
Fantasy
4/29/2026 2:49pm
Yoda wrote:

Anyone know if LMS was running the ABS while picking up every race win possible down in Aus? 

Sugarbrad wrote:

We are not/haven't been running it.

Are you able to share your reasons why or your opinions on abs? I'm sure we all would love to know. 

3
4/29/2026 2:53pm

I’m not trying to win races, but locking up my rear wheel is one of my favoritest things!!

4
1
Konda
Posts
45
Joined
5/28/2023
Location
Kidderminster GB
4/29/2026 3:16pm
sspomer wrote:
pit bits shots of richie's derailleur (assume saint)

pit bits shots of richie's derailleur (assume saint)

20260429 UCI DH WorldCup SouthKorea H8A983420260429 UCI DH WorldCup SouthKorea H8A9848.jpg?VersionId=gby20260429 UCI DH WorldCup SouthKorea H8A986020260429 UCI DH WorldCup SouthKorea H8A9861

This looks like the shimano patent i saw reported a while back where the cage pivot was between the two jockey wheels.

Fairly sure i read about it on bikeradar, but quick google came back with this article : https://www.cyclingnews.com/news/is-shimano-about-to-reinvent-the-rear-derailleur/

I've definitely read something about potentially no clutch (despite them inventing it) and i wonder how this design will play with a dual spring vs the latest xtr which gets a bad rep.

3
Simcik
Posts
431
Joined
8/1/2009
Location
Loma, CO US
4/29/2026 3:29pm Edited Date/Time 4/29/2026 3:32pm
chriskief wrote:
First sighting of an XD Slim hub?

First sighting of an XD Slim hub?

20260429 UCI DH WorldCup SouthKorea SR37583 0

At the beginning of April, DT Swiss launched their new EX1700. XD and HG Slim hubs are standard offered hubs in those complete wheels:

image 701.png?VersionId=g

image 700.png?VersionId=THAqEUzf1iwxPWY1LC

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owl-x
Posts
888
Joined
3/23/2016
Location
Shell Beach, CA US
4/29/2026 3:42pm

Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start googling…

1
nskerb
Posts
342
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3/3/2020
Location
Kelso, WA US
4/29/2026 3:50pm

Pick a chainring size and be a dick about it? Honestly who cares. Kind of reminds me of skiing, where if you don’t ski on 130 flex boots you’re a lil bish. 

I have a commute and regular guy job and live kinda far from trails. I don’t have as much free time as others to be an ascent monster. Let me enjoy my 30t ring. Don’t yuck my yum yo!!

19
owl-x
Posts
888
Joined
3/23/2016
Location
Shell Beach, CA US
4/29/2026 4:10pm
nskerb wrote:
Pick a chainring size and be a dick about it? Honestly who cares. Kind of reminds me of skiing, where if you don’t ski on 130...

Pick a chainring size and be a dick about it? Honestly who cares. Kind of reminds me of skiing, where if you don’t ski on 130 flex boots you’re a lil bish. 

I have a commute and regular guy job and live kinda far from trails. I don’t have as much free time as others to be an ascent monster. Let me enjoy my 30t ring. Don’t yuck my yum yo!!

Insecurity is a mutha!

1
1
sspomer
Posts
6112
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Location
Boise, ID US
Fantasy
4/29/2026 5:13pm Edited Date/Time 4/30/2026 9:21am

kolb's V10 27.5 conversion dropout for XL (sorry, i had it backwards)

PHOTO-2026-04-29-18-08-37 0.jpg?VersionId=bkMbnX KC

 

PHOTO-2026-04-29-18-15-51 0.jpg?VersionId=Twz9YI54rNGHTPLZ8AN1jZY76T6p8
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Big Dos
Posts
42
Joined
11/7/2016
Location
AU
4/29/2026 5:18pm
owl-x wrote:
Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start...

Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start googling…

It depends what settings you have the system in. I wrote an article about it recently for a print magazine here in Aus. I would bet (and hope) whatever is being used here is much more advanced than anything available to the consumer currently.

5
Sugarbrad
Posts
91
Joined
1/29/2020
Location
Banner Elk, NC US
4/29/2026 6:59pm
Eae903 wrote:

Are you able to share your reasons why or your opinions on abs? I'm sure we all would love to know. 

Luke is happy with his current set up.

5
1
seanfisseli
Posts
568
Joined
4/16/2024
Location
Santa Cruz, CA US
4/29/2026 8:44pm
DServy wrote:
Yeah, as someone who does HR based zone-oriented training a <32t is pretty amazing when i need to haul a heavy bike up something in zone...

Yeah, as someone who does HR based zone-oriented training a <32t is pretty amazing when i need to haul a heavy bike up something in zone 2. Sure I could ignore what I'm trying to accomplish on that ride and muscle my way up things and blow myself up in the process, but that's not always what you need to be doing.

And yes, I do go to a gym.

My guess is that people who are saying "real bikers only need 32t" haven't actually ever followed a formal training plan, which tend to involve a lot of time in zone 2 (which is a pretty low effort). 

Am I wrong to think that the O chain is compatible with all bcd104 rings? Why wouldn't a wolf tooth ring work? If you're locked in...

Am I wrong to think that the O chain is compatible with all bcd104 rings? Why wouldn't a wolf tooth ring work? If you're locked in to a $120 SRAM ring, I would take back any praise I've given the Ochain.

sprungmass wrote:
Things get a little tricky when you step down to 30T using OChain and especially the adjustable models. They don't have a symmetrical design like some...

Things get a little tricky when you step down to 30T using OChain and especially the adjustable models. They don't have a symmetrical design like some of their fixed versions. There is a hump on top that needs to be cleared. Sure you can take a Wolftooth ring and use a Dremel to get that clearance or buy something that is designed around that hump. 

source: I went through analysis paralysis trying to find a OChain and t-type certified 104BCD chain ring in 2024. Pilo brand was the only option.

CLEARLY I needed to hit the gym instead and get deezed like Förstemann and up my FTP to 420. It has absolutely nothing to do with our 14% mountain climbs using 38lb enduro bikes with DH tires. 

PXL 20240929 195908637 1

God dang I bet that stumpy feels great with the ochain

2
Eae903
Posts
371
Joined
10/20/2023
Location
Laramie, WY US
Fantasy
4/29/2026 8:52pm
Sugarbrad wrote:

Luke is happy with his current set up.

Well I hope so, I've got him on both my vital and pinkbike fantasy teams haha. Good luck this weekend! 

4
Any0ng
Posts
21
Joined
4/1/2025
Location
Bad Oeynhausen DE
4/29/2026 11:51pm Edited Date/Time 4/30/2026 6:44am
sspomer wrote:
kolb's V10 27.5 conversion dropout for XL (sorry, i had it backwards) 

kolb's V10 27.5 conversion dropout for XL (sorry, i had it backwards)

PHOTO-2026-04-29-18-08-37 0.jpg?VersionId=bkMbnX KC

 

PHOTO-2026-04-29-18-15-51 0.jpg?VersionId=Twz9YI54rNGHTPLZ8AN1jZY76T6p8

Can somebody explain this in more detail? I would love to use something similar on my Unno Mith.

The two upper bolts go through the normal hole in the frame dropout and the lower ones clamp the whole thing togheter? The left upper one (drive side) looks to be to far backwards to go throught the hole in the droput, no?

I want it!

EDIT: Yea, it seems I confused things. That thing doesn't applly to making a mullet into a full29

Also: Chain wax is amazing, especially on e-bikes. I use a very simple mixture of 30% beeswax and 70% paraffin, and I'm really happy with it on all my bikes. Last around 200-350 km depending on condition

1
Primoz
Posts
4561
Joined
8/1/2009
Location
SI
4/30/2026 12:31am

I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs to be lower to keep the geometry of the bike. Thus this thingamadood to lower the axle position. 

I guess it's two aluminium blocks anchored in the (elongated on the V10) dropout hole to prevent rotation and bolted together as much as possible. 

11
Big Dos
Posts
42
Joined
11/7/2016
Location
AU
4/30/2026 2:36am

P.S.
Praise the lord that new saint is still mechanical

24
4/30/2026 3:57am
Primoz wrote:
I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs...

I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs to be lower to keep the geometry of the bike. Thus this thingamadood to lower the axle position. 

I guess it's two aluminium blocks anchored in the (elongated on the V10) dropout hole to prevent rotation and bolted together as much as possible. 

Exactly. The XL is a 29er but he wants to run a Mullet. He talked about it in the german mtb-news bike checks

4
ioni
Posts
28
Joined
1/18/2024
Location
Villa De Alvarez, Col. MX
4/30/2026 5:54am
Primoz wrote:
I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs...

I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs to be lower to keep the geometry of the bike. Thus this thingamadood to lower the axle position. 

I guess it's two aluminium blocks anchored in the (elongated on the V10) dropout hole to prevent rotation and bolted together as much as possible. 

hardbash wrote:

Exactly. The XL is a 29er but he wants to run a Mullet. He talked about it in the german mtb-news bike checks

Interesting, one of his favorite things about going to YT was a full 29er dh bike which was way faster when they timed it (according to him). Or is he only going mullet for this race? (Sorry, a bit out of the loop here).

3
4/30/2026 6:15am
krabo83 wrote:

would be nice to know who‘s bike/IG this is Wink

Kiran MacKinnon

Looks like a mullet conversion for the XL / 29er V10 (all the other 29er bikes have the cable port on the seat stay)

This isn't even old enough to be in the OG tech rumors thread! clearly you all have been riding bikes too much to be good forum members haha

1
krabo83
Posts
719
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12/26/2017
Location
AT
4/30/2026 7:07am Edited Date/Time 4/30/2026 7:09am
sspomer wrote:
kolb's V10 27.5 conversion dropout for XL (sorry, i had it backwards) 

kolb's V10 27.5 conversion dropout for XL (sorry, i had it backwards)

PHOTO-2026-04-29-18-08-37 0.jpg?VersionId=bkMbnX KC

 

PHOTO-2026-04-29-18-15-51 0.jpg?VersionId=Twz9YI54rNGHTPLZ8AN1jZY76T6p8

as some already clarified, it‘s a conversion for a 27,5 rear wheel, not 29. andi is running a xl v10 and that comes stock full 29, that‘s why they need these special dropouts to run 27,5 on the stock rear triangle.

edit: others were quicker replying Smile

3
shreda
Posts
208
Joined
10/2/2018
Location
GB
4/30/2026 8:12am

New Scott Spark in maybe 32“ coming?


7c9dbaee-98cf-4e89-b475-67b144625fff

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1
Big Bird
Posts
2292
Joined
2/1/2011
Location
Oceano, CA US
4/30/2026 10:22am

Feel free to downvote me... But I have to chuckle a little bit every time someone complains that they need a smaller front chainring, when I used to run a 48 tooth MRP on my "All mountain." bike in Santa Cruz back in the day.

1
38
4/30/2026 10:39am
shreda wrote:
New Scott Spark in maybe 32“ coming?

New Scott Spark in maybe 32“ coming?


7c9dbaee-98cf-4e89-b475-67b144625fff

confirmed not 32", though that photo does make them look big.

2
4/30/2026 10:40am
Big Bird wrote:
Feel free to downvote me... But I have to chuckle a little bit every time someone complains that they need a smaller front chainring, when I...

Feel free to downvote me... But I have to chuckle a little bit every time someone complains that they need a smaller front chainring, when I used to run a 48 tooth MRP on my "All mountain." bike in Santa Cruz back in the day.

And I'm sure you pedaled it uphill a lot

6
1
Simcik
Posts
431
Joined
8/1/2009
Location
Loma, CO US
4/30/2026 10:40am
Big Bird wrote:
Feel free to downvote me... But I have to chuckle a little bit every time someone complains that they need a smaller front chainring, when I...

Feel free to downvote me... But I have to chuckle a little bit every time someone complains that they need a smaller front chainring, when I used to run a 48 tooth MRP on my "All mountain." bike in Santa Cruz back in the day.

As someone who often thinks of the good ole days of MTB, this applies here and often to me...

Pepperidge farms remembers - Pepperidge Farm Remembers - quickmeme

7
comatosegi
Posts
61
Joined
8/28/2025
Location
Portland, OR US
4/30/2026 10:41am
Primoz wrote:
I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs...

I think it's a modification to be able to run a 27,5 wheel in a 29er rear triangle. As the wheel is smaller, the axle needs to be lower to keep the geometry of the bike. Thus this thingamadood to lower the axle position. 

I guess it's two aluminium blocks anchored in the (elongated on the V10) dropout hole to prevent rotation and bolted together as much as possible. 

hardbash wrote:

Exactly. The XL is a 29er but he wants to run a Mullet. He talked about it in the german mtb-news bike checks

ioni wrote:
Interesting, one of his favorite things about going to YT was a full 29er dh bike which was way faster when they timed it (according to...

Interesting, one of his favorite things about going to YT was a full 29er dh bike which was way faster when they timed it (according to him). Or is he only going mullet for this race? (Sorry, a bit out of the loop here).

He changed to MX mid way through 25 season. He stated it was easier to correct a mistake.

2
comatosegi
Posts
61
Joined
8/28/2025
Location
Portland, OR US
4/30/2026 10:56am
owl-x wrote:
Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start...

Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start googling…

Wheel speed traditionally, both front and rear.  Its why there is a tone wheels and wheel speed sensors.

1
1
joshmtb
Posts
56
Joined
4/17/2025
Location
Haslemere GB
4/30/2026 12:43pm
owl-x wrote:
Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start...

Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start googling…

A car ABS system will monitor the wheel speed front and rear, whilst also take in information from an accelerometer to decide if the wheels are not moving but the vehicle is. Stability control is similar, but also monitors vehicle yaw, steering input and all 4 wheel speeds and modulates pressure to individual wheels. Bosch do some pretty high end motorsport ABS systems, i'd expect they're looking at the accelerometer to determine things like if you're in the air etc.

4
4/30/2026 2:03pm
owl-x wrote:
Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start...

Do mountain bike ABS systems allow a wheel to stop while airborne? What does the system monitor to make its decisions? I guess I should start googling…

joshmtb wrote:
A car ABS system will monitor the wheel speed front and rear, whilst also take in information from an accelerometer to decide if the wheels are...

A car ABS system will monitor the wheel speed front and rear, whilst also take in information from an accelerometer to decide if the wheels are not moving but the vehicle is. Stability control is similar, but also monitors vehicle yaw, steering input and all 4 wheel speeds and modulates pressure to individual wheels. Bosch do some pretty high end motorsport ABS systems, i'd expect they're looking at the accelerometer to determine things like if you're in the air etc.

Does it matter though? Your not going to pull the lever when your in the air (unless you don't like living) and the system won't brake by itself. Meaning user input solves the in the air problem 

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2
4/30/2026 3:39pm

You must not have ever ridden moto.  Using the rear brake in the air is a definite technique to bring the front end down a bit.

9
4/30/2026 3:52pm

You must not have ever ridden moto.  Using the rear brake in the air is a definite technique to bring the front end down a bit.

Rumor has it this also works on a MTB 😂

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