2026 MTB Tech Rumors and Innovation - Longer and Slacker

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sethimus
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3/12/2026 1:13pm Edited Date/Time 3/12/2026 1:13pm
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ballz
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3/12/2026 1:19pm
ballz wrote:
Do motorbikes have engines or motors? Asking for a friend.(also, in some/many/most? languages, there's no distinction between those two words or no such commonly used synonyms...

Do motorbikes have engines or motors? Asking for a friend.

(also, in some/many/most? languages, there's no distinction between those two words or no such commonly used synonyms exist)

overbiked wrote:

Combustion powered = engine. Motorcycles have engines. Motor is not referring to power source but comes from the Latin word "movere" meaning "to move."

So, bicycles don't move? The common explanation "motorized bicycle" sounds more plausible to me, but whatever. Gotta keep the English purists happy!

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ballz
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3/12/2026 1:24pm
sethimus wrote:

verbrennungsmaschine!

Ich möchte ein Motorrad mit eine Dampfmaschine haben! 

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overbiked
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3/12/2026 1:25pm
ballz wrote:

So, bicycles don't move? The common explanation "motorized bicycle" sounds more plausible to me, but whatever. Gotta keep the English purists happy!

Silly stuff I know, but it comes from French "motocyclette" using the same Latin. If it hadn't been derived from another language it would make much more sense to be "Engine Cycle" or something.

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overbiked
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3/12/2026 1:40pm

Am I crazy or does the cable guide on Tommy G's new rocky head tube look different than any of their current bikes?

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owl-x
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Shell Beach, CA US
3/12/2026 1:54pm

I was taught that engines burn a fuel inside, motors get their power from an unchanged source (electricity, water, something that remains the same after it does its thang in the motor…so almost always electricity.) This was troubling to my engineer dad when I asked how their whole their whole logic wasn’t fried anyways because Detroit isn’t the Engine City…expect a subject change!

American exceptionalism! 

motor engine whatever, if we’re talking about a thing we are talking about a thing, that’s what matters

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amaranth
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Nutley, NJ US
3/12/2026 2:45pm
TEAMROBOT wrote:
Doesn't it seem obvious that the optimal wheelsize for XC racing would be:1. The biggest wheelsize you can fit into your frame and fork without significantly...

Doesn't it seem obvious that the optimal wheelsize for XC racing would be:

1. The biggest wheelsize you can fit into your frame and fork without significantly jeopardizing bike fit, and

2. The biggest wheelsize that's still available with a competitive tire (casing/compound/tread)

If you can check both of those boxes, I don't see why it wouldn't be faster than running a smaller wheel. I'm sure we would see diminishing returns for 36", 39", or even 42" wheels (as you mentioned), but diminishing returns are still positive returns. As long as you can build a wheel with featherlight spokes and rims, and 170 tpi super light fast rolling tires, I don't think the added weight is ever going to overcome the benefits of rolling faster, because the added weight is so low and the benefit of faster rolling speed is so great.

This is why I'm a grouch in favor of UCI regulations to level the playing field. If 32" wheels really are so much better than 29", and if 36" wheels would be even better still, then that's a huge and unfair advantage for taller athletes. One of my favorite things about cycling has been the fact that tall and short athletes both win races. It would be lame if we created a version of MTB where short or even average height people didn't have a chance at winning a race. 29" already barely fit in some pro rider's bikes. 32" will be a non-starter for a huge portion of the field.

I have a different opinion. As long as it's a bike with 2 wheels and human power output, I say anything flies. Don't level the playing field. Let it be raw. If the winning combo is sitting in between 60 inch wheels then let that be. Maybe there will be an advantage we don't know yet to shorter people vs taller people. Don't limit the equipment beyond necessary, let it all play out. 

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matmattmatthew
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Fresh Prince of Bel Air, MD US
3/12/2026 4:06pm

Flame me if you’d like, but 32” wheels is one of the few things that has me excited for a new bike.  There are so many amazing full suspension bikes now ,and geometry, for whatever discipline, have pretty much leveled out.  As someone that rides my Singlespeed as much or more than my FS, I’m excited to build up a rigid Singlespeed 32er.  My local trails are fairly mellow and as I get older I appreciate momentum and keeping a higher average pace over “shredding the gnar!”  

 

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1
3/12/2026 7:10pm
overbiked wrote:

Am I crazy or does the cable guide on Tommy G's new rocky head tube look different than any of their current bikes?

No you're right and I can also convince myself it's made of metal (I feel I can see a weld along the top-tube junction to the head-tube)

1
3/12/2026 7:55pm
overbiked wrote:

Am I crazy or does the cable guide on Tommy G's new rocky head tube look different than any of their current bikes?

I mean the main thing I’m seeing is that he has has stuff routed to enable barspins and tail whips 

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3/12/2026 9:05pm

Wheel size will increase until air drag and extra weight overcome increased roll over. I assume 34"

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Any0ng
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3/12/2026 11:50pm Edited Date/Time 3/12/2026 11:51pm

They tested 32 vs. 29. Maybe the automatic subtitles work for our anglosaxon friends here Smile

 

One of the things they point out is that the bigger wheel not only has more weight and needs more energy to "spin up", but also has to rotate slower for the same speed wich "kind of" cancels out the more on energy you need to spin it up.

Thats a point I did not read anywhere else before but makes sense in my book.

They have measured a advantage of about 2-3% for the 32 over the 29.

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FullSend
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3/13/2026 6:18am
As I've said previously, if these two tests are showing 2-6% performance gains from going to 32" wheels, those with them this season will have a...

As I've said previously, if these two tests are showing 2-6% performance gains from going to 32" wheels, those with them this season will have a MASSIVE advantage. XC World Cups are won/lost by seconds these days. <1min sometimes encompasses the top 15 riders. 1 minute over the course of an 80-minute race is 1.25%. Marginal gains (aero parts, lighter lube in hubs) that these teams work for net racers WELL under 1% advantage. And these wheels will likely be netting riders 2-6% gains. Even if in the real work that that number is as low as 2%, that will be a gigantic advantage with the competitiveness of current World Cup racing.  We've seen this play out with 26" > 29". No one would dare show up on a 26" wheel at a modern race, they'd automatically be out of contention. 

In a scenario where 32" wheels turn out to be a clear competitive advantage for racing and become dominant in XCO, the UCI will have no choice but to ban them for race use, or relegate them to their own separate class. Smaller riders don't have access to the full range of advantages of the larger wheelsize and 32" wheels would therefore facilitate a disproportionate and unfair advantage for larger riders.

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jonkranked
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Norristown, PA US
3/13/2026 6:36am
As I've said previously, if these two tests are showing 2-6% performance gains from going to 32" wheels, those with them this season will have a...

As I've said previously, if these two tests are showing 2-6% performance gains from going to 32" wheels, those with them this season will have a MASSIVE advantage. XC World Cups are won/lost by seconds these days. <1min sometimes encompasses the top 15 riders. 1 minute over the course of an 80-minute race is 1.25%. Marginal gains (aero parts, lighter lube in hubs) that these teams work for net racers WELL under 1% advantage. And these wheels will likely be netting riders 2-6% gains. Even if in the real work that that number is as low as 2%, that will be a gigantic advantage with the competitiveness of current World Cup racing.  We've seen this play out with 26" > 29". No one would dare show up on a 26" wheel at a modern race, they'd automatically be out of contention. 

FullSend wrote:
In a scenario where 32" wheels turn out to be a clear competitive advantage for racing and become dominant in XCO, the UCI will have no...

In a scenario where 32" wheels turn out to be a clear competitive advantage for racing and become dominant in XCO, the UCI will have no choice but to ban them for race use, or relegate them to their own separate class. Smaller riders don't have access to the full range of advantages of the larger wheelsize and 32" wheels would therefore facilitate a disproportionate and unfair advantage for larger riders.

it will be interesting to see who rolls up to the start line on them in May

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Primoz
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3/13/2026 7:04am Edited Date/Time 3/13/2026 7:05am
As I've said previously, if these two tests are showing 2-6% performance gains from going to 32" wheels, those with them this season will have a...

As I've said previously, if these two tests are showing 2-6% performance gains from going to 32" wheels, those with them this season will have a MASSIVE advantage. XC World Cups are won/lost by seconds these days. <1min sometimes encompasses the top 15 riders. 1 minute over the course of an 80-minute race is 1.25%. Marginal gains (aero parts, lighter lube in hubs) that these teams work for net racers WELL under 1% advantage. And these wheels will likely be netting riders 2-6% gains. Even if in the real work that that number is as low as 2%, that will be a gigantic advantage with the competitiveness of current World Cup racing.  We've seen this play out with 26" > 29". No one would dare show up on a 26" wheel at a modern race, they'd automatically be out of contention. 

FullSend wrote:
In a scenario where 32" wheels turn out to be a clear competitive advantage for racing and become dominant in XCO, the UCI will have no...

In a scenario where 32" wheels turn out to be a clear competitive advantage for racing and become dominant in XCO, the UCI will have no choice but to ban them for race use, or relegate them to their own separate class. Smaller riders don't have access to the full range of advantages of the larger wheelsize and 32" wheels would therefore facilitate a disproportionate and unfair advantage for larger riders.

How big of a disadvantage is being taller on the air resistance front? And how much of an advantage being smaller brings here?

If we're banning wheel sizes, why not also ban frame sizes? 

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sollie
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3/13/2026 9:09am
Primoz wrote:
How big of a disadvantage is being taller on the air resistance front? And how much of an advantage being smaller brings here?If we're banning wheel...

How big of a disadvantage is being taller on the air resistance front? And how much of an advantage being smaller brings here?

If we're banning wheel sizes, why not also ban frame sizes? 

Not to mention the Square-Cube law making it increasingly hard to maintain a competitive W/Kg. I doubt there are any endurance athletes on earth who would ask a genie to be 6” taller. 

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seanfisseli
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3/13/2026 10:13am

I cannot believe how inane the convo around 32 is. Please, people: you are saying the exact same things they said about 29.

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Finkill
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3/13/2026 11:17am Edited Date/Time 3/13/2026 11:19am

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

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mattj16
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Kailua, HI US
3/13/2026 11:28am
Finkill wrote:
My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home...

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

So then don't buy one?🤷

With Trek lifting the curtain of their new flex stay XC bike, Giant going all in with the new Anthem SL and X version (they've yet to hit sales floors though), and the Epic being competitive and sought after on the consumer front, who's going to be the first big player to go 32? Seems like Trek is waiting to see what the market does with big wheels before they hit the green button on the bike maker machine for this new bike.

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jasbushey
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Durango, CO US
3/13/2026 11:46am
Finkill wrote:
My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home...

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new 32” bike.  The Consumerism dream. 

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3/13/2026 12:04pm

it's funny when the 32" "advantage" won't be an advantage when everyone is on one.

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2
3/13/2026 12:33pm Edited Date/Time 3/13/2026 12:34pm

it's funny when the 32" "advantage" won't be an advantage when everyone is on one.

I see what you mean, but if that were the case, why not limit DH bikes to 160mm travel because smaller forks are cheaper and more accessible to the everyday rider? Or outlaw cleats in soccer because they give better grip? I agree that every single innovation isn't necessarily better for us mere mortals, but in the pinnacle of the sport, we should be pushing the bounds of what is possible. 

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Finkill
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3/13/2026 12:45pm Edited Date/Time 3/13/2026 12:46pm
Finkill wrote:
My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home...

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

jasbushey wrote:
This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new...

This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new 32” bike.  The Consumerism dream. 

Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit more outward looking and less self sabotaging, we would not be in the current slump. 32" wheels won't fix the market. Same with companies only focussing on high end, if everyone does it, nobody wins. 

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Finkill
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3/13/2026 12:51pm Edited Date/Time 3/13/2026 12:55pm
Finkill wrote:
My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home...

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

mattj16 wrote:
So then don't buy one?🤷With Trek lifting the curtain of their new flex stay XC bike, Giant going all in with the new Anthem SL and...

So then don't buy one?🤷

With Trek lifting the curtain of their new flex stay XC bike, Giant going all in with the new Anthem SL and X version (they've yet to hit sales floors though), and the Epic being competitive and sought after on the consumer front, who's going to be the first big player to go 32? Seems like Trek is waiting to see what the market does with big wheels before they hit the green button on the bike maker machine for this new bike.

Don't worry, I'm in no hurry. 

The problem I'm trying to highlight is that bikes are less and less easy to live with and less likely to bring people into the sport or persuade them to stay in the sport. Always focussing solely on performance as the most important product attribute is wrong in my opinion. Same with unserviceable and increasingly powerful ebike motors and other 'innovation' in the bike world. 

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seanfisseli
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Santa Cruz, CA US
3/13/2026 12:59pm
Finkill wrote:
My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home...

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

jasbushey wrote:
This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new...

This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new 32” bike.  The Consumerism dream. 

Finkill wrote:
Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit...

Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit more outward looking and less self sabotaging, we would not be in the current slump. 32" wheels won't fix the market. Same with companies only focussing on high end, if everyone does it, nobody wins. 

E-bikes completely changed the average persons idea and relationship with cycling. It revolutionized the industry 

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Finkill
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GB
3/13/2026 1:09pm
jasbushey wrote:
This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new...

This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new 32” bike.  The Consumerism dream. 

Finkill wrote:
Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit...

Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit more outward looking and less self sabotaging, we would not be in the current slump. 32" wheels won't fix the market. Same with companies only focussing on high end, if everyone does it, nobody wins. 

E-bikes completely changed the average persons idea and relationship with cycling. It revolutionized the industry 

Absolutely ebikes can improve accessibility and utility, making bikes a great solution in a wider range of situations. More focus on durability, reliability and serviceability as performance measures for new product innovation would only help that. 

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piratetrails
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Location
Arcadia, VA US
3/13/2026 1:16pm
Flame me if you’d like, but 32” wheels is one of the few things that has me excited for a new bike.  There are so many...

Flame me if you’d like, but 32” wheels is one of the few things that has me excited for a new bike.  There are so many amazing full suspension bikes now ,and geometry, for whatever discipline, have pretty much leveled out.  As someone that rides my Singlespeed as much or more than my FS, I’m excited to build up a rigid Singlespeed 32er.  My local trails are fairly mellow and as I get older I appreciate momentum and keeping a higher average pace over “shredding the gnar!”  

 

I’d hanker a guess that most of us here have zero problem with 32 on gravel, rigid mtb, hardtails, and XC race bikes but we’re very wary of it going into disciplines with travel above those. Some of us got bamboozled by 150mm+ 29ers only to have to buy new bikes yet again to get the handling we want out of a mullet bike.

We’re tired boss. Our bikes handle really good and we don’t need or want them to be faster. (non racer obv)

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ebruner
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Location
Tustin, CA US
3/13/2026 1:22pm
Finkill wrote:
My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home...

My concerns over 32" wheels are practical not performance. My current bike barely fits into my bike bag, cars, trains etc. Storage space in my home is limited, a bigger, longer bike is not something I want right now. 

I doubt if uplift trailers and chairlift mounts are ready for the bigger wheels yet. 

jasbushey wrote:
This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new...

This is what companies want. You need a new bike bag, a higher price train ticket, a new car, and a new house for your new 32” bike.  The Consumerism dream. 

Finkill wrote:
Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit...

Be good if they put some effort into selling bikes to new people, rather than new bikes to existing riders. If the industry was a bit more outward looking and less self sabotaging, we would not be in the current slump. 32" wheels won't fix the market. Same with companies only focussing on high end, if everyone does it, nobody wins. 

These are good posts and discussions for the bikeconomics thread.  This thread, is about new technology rumors and new tech.  Remember, no one forces you to buy a new bike.  The gear in this sport would be less interesting and not worth talking about if the prevailing notion was, "meh, we didn't develop this any further because it didn't fix the market and new riders don't care."  Bikes used to be shite, but the sport was still fun.  Now the sport is fun, and bikes aren't shite.  

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piratetrails
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Location
Arcadia, VA US
3/13/2026 1:24pm

it's funny when the 32" "advantage" won't be an advantage when everyone is on one.

What happens for small riders who hit the hard limit on stack with a 100mm fork and a 32in wheel? Reduce the travel? Drop stem so low their chin is on the top cap? Maybe this won’t be an issue in practice but I’d like races not to be decided by how someone was born and what equipment they can reasonably use because of that.

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