Modern Inverted Single Crown Forks

amaranth
Posts
181
Joined
10/19/2023
Location
Nutley, NJ US
Fantasy
8/22/2025 10:02am

Owned a blackline Intend edge for some time, never really jived with it. I am a heavier rider (200lbs geared up). Things I didn't get along with the fork - 1. The compression tune was too light from factory, though I did fix that later on. On flatter rides it feels great but never quite gave the confidence to charge in more demanding scenarios. 2. On slow & steep tech sections the "compliance" built into the usd design becomes a bit unnerving - especially when trying to turn with a lot of weight on the front wheel. Sometimes the handlebar and front wheel are not perpendicular anymore in those moments. I think both of these stem from my weight - I passed this fork on to a much lighter friend and he hasn't experienced nearly as much flex as I had. I am currently on a EXT vaia and even the EXT usa guys have told me to slightly over-torque the crown bolts so maintain rigidity. TDLR - if you're heavy like I am, the fork may have some issues. Seems to not affect lighter guys.

11
sethimus
Posts
881
Joined
9/20/2014
Location
CH
8/26/2025 3:29am Edited Date/Time 8/26/2025 3:29am

NO INTENDS FOR YOU (AMERICANS)

Seinfeld's Soup Nazi Could've Been an Actual Nazi

 

(blame the fat fuck)

9
3
g33kle
Posts
4
Joined
5/16/2025
Location
Beavercreek, OH US
Fantasy
8/26/2025 4:56am

Damn, had been waiting on a 55 stroke Hover to finally be available too. Wonder how bad the DHL express shipping will be.

1
johnsogr
Posts
36
Joined
3/31/2013
Location
Toronto, ON CA
8/26/2025 5:28am

I lucked out - just received a Opt Damper without tariffs!

2
D.Max
Posts
13
Joined
9/24/2023
Location
Nelson, BC CA
8/27/2025 10:43pm
They would need to make sure that they had a licensing deal in place with us before doing that. We have a pending global patent in...

They would need to make sure that they had a licensing deal in place with us before doing that. We have a pending global patent in place for our fender system. 

 

Fender 0

 

Darren, I feel like you probably already know this, or at least you should already know it, but this is a ridiculous claim and isn’t a defensible patent based on prior art.

There are multiple previously existing fenders for inverted forks have attached the fender to the stanchion guards. Off the top of my head:

1.The Manitou Dorado has had fender a fender that is integrated into the stanchion guards since at least 2019.

2. The EXT Vaia Has a similar type of fender that attaches to the stanchion guards.

3. There are a multitude of motorcycle forks the have integrated stanchion guards/fenders.

The only possible claim that you might have for novelty is the fact that your fender can be removed without having to remove the stanchion guards, but that is moot since EXT has already implemented a similar system, and I also highly doubt that it would pass the test for obviousness.

To me, the fact that you are trying to claim a patent for this, and keep other people from implementing an obvious solution to a problem (that has already been suggested by any number of people on this very forum), is distasteful and makes me much less likely to consider purchasing a Push product. 

23
sethimus
Posts
881
Joined
9/20/2014
Location
CH
8/28/2025 2:14am

THAT‘s the only off putting thing?

2
trexyz
Posts
115
Joined
10/18/2016
Location
RO
8/28/2025 2:32am
They would need to make sure that they had a licensing deal in place with us before doing that. We have a pending global patent in...

They would need to make sure that they had a licensing deal in place with us before doing that. We have a pending global patent in place for our fender system. 

 

Fender 0

 

I have to say I completely agree with what’s already been said here. This type of mudguard solution is not new, other brands have been doing it for years. Personally, I run an EXT Vaia fork and bought this version of their fender:
https://visionvelo.eu/product/ext-vaia-racing-mudguard/ 

WhatsApp Image 2025-08-15 at 14.40.55 0

In my experience the quality isn’t great, the hose clamp actually broke after just two days of bike park riding and for the price it’s honestly pretty crazy for what’s essentially a mudguard. But regardless of the quality, the point is that this exact concept already exists on the market, so trying to claim novelty here just doesn’t really hold up. Also got one on my previous Dorado, the only difference was that the version from Manitou came with integrated stanchion protectors.

4
8/28/2025 7:02am
They would need to make sure that they had a licensing deal in place with us before doing that. We have a pending global patent in...

They would need to make sure that they had a licensing deal in place with us before doing that. We have a pending global patent in place for our fender system. 

 

Fender 0

 

D.Max wrote:
Darren, I feel like you probably already know this, or at least you should already know it, but this is a ridiculous claim and isn’t a...

Darren, I feel like you probably already know this, or at least you should already know it, but this is a ridiculous claim and isn’t a defensible patent based on prior art.

There are multiple previously existing fenders for inverted forks have attached the fender to the stanchion guards. Off the top of my head:

1.The Manitou Dorado has had fender a fender that is integrated into the stanchion guards since at least 2019.

2. The EXT Vaia Has a similar type of fender that attaches to the stanchion guards.

3. There are a multitude of motorcycle forks the have integrated stanchion guards/fenders.

The only possible claim that you might have for novelty is the fact that your fender can be removed without having to remove the stanchion guards, but that is moot since EXT has already implemented a similar system, and I also highly doubt that it would pass the test for obviousness.

To me, the fact that you are trying to claim a patent for this, and keep other people from implementing an obvious solution to a problem (that has already been suggested by any number of people on this very forum), is distasteful and makes me much less likely to consider purchasing a Push product. 

I guess I should have put an emoji in my comment, as this was meant to be tongue-in-cheek mostly. 

That being said, it is my understanding that the Dorado fender is a one-piece structure completely integrated into the guards, much like what DVO did, which is different than what we're doing. As for EXT, their system was introduced long after we had begun going down this path. At the end of the day, we'll just have to see how things play out. This is definitely not my area of expertise. 

PUSH is a very small company compared to companies such as FOX, RS, EXT, and Manitou. We've lost both employees and technologies to these companies and are now are focused on working harder to protect the hard work put in by our staff here at PUSH. And, the efforts are paying off as we just recently completed a licensing deal with one of the previously mentioned companies for one of our patents. 

My apologies for sounding off-putting. I just want to contribute to the conversation where I can, and sometimes forget how easily things are lost in translation when being typed and read versus an actual in-person conversation. 

15
2
8/28/2025 8:23am Edited Date/Time 8/28/2025 8:50am

So is poor bushing fit and chassis bind now a "good thing"?

Saying you don't notice bushing bind in a fork that has never been ridden without the bushings binding is pretty funny.

https://www.pinkbike.com/news/comment-fork-alignment-and-friction-in-the-fox-podium.html

 

10
1
sethimus
Posts
881
Joined
9/20/2014
Location
CH
8/28/2025 8:37am Edited Date/Time 8/28/2025 8:37am
I guess I should have put an emoji in my comment, as this was meant to be tongue-in-cheek mostly. That being said, it is my understanding that...

I guess I should have put an emoji in my comment, as this was meant to be tongue-in-cheek mostly. 

That being said, it is my understanding that the Dorado fender is a one-piece structure completely integrated into the guards, much like what DVO did, which is different than what we're doing. As for EXT, their system was introduced long after we had begun going down this path. At the end of the day, we'll just have to see how things play out. This is definitely not my area of expertise. 

PUSH is a very small company compared to companies such as FOX, RS, EXT, and Manitou. We've lost both employees and technologies to these companies and are now are focused on working harder to protect the hard work put in by our staff here at PUSH. And, the efforts are paying off as we just recently completed a licensing deal with one of the previously mentioned companies for one of our patents. 

My apologies for sounding off-putting. I just want to contribute to the conversation where I can, and sometimes forget how easily things are lost in translation when being typed and read versus an actual in-person conversation. 

you know what's also off-putting? trying to deflect problems to something some dealer apparently sold someone wrong to then collect the fork again and replacing a lot of things...

2
2
8/28/2025 8:40am
I guess I should have put an emoji in my comment, as this was meant to be tongue-in-cheek mostly. That being said, it is my understanding that...

I guess I should have put an emoji in my comment, as this was meant to be tongue-in-cheek mostly. 

That being said, it is my understanding that the Dorado fender is a one-piece structure completely integrated into the guards, much like what DVO did, which is different than what we're doing. As for EXT, their system was introduced long after we had begun going down this path. At the end of the day, we'll just have to see how things play out. This is definitely not my area of expertise. 

PUSH is a very small company compared to companies such as FOX, RS, EXT, and Manitou. We've lost both employees and technologies to these companies and are now are focused on working harder to protect the hard work put in by our staff here at PUSH. And, the efforts are paying off as we just recently completed a licensing deal with one of the previously mentioned companies for one of our patents. 

My apologies for sounding off-putting. I just want to contribute to the conversation where I can, and sometimes forget how easily things are lost in translation when being typed and read versus an actual in-person conversation. 

sethimus wrote:
you know what's also off-putting? trying to deflect problems to something some dealer apparently sold someone wrong to then collect the fork again and replacing a...

you know what's also off-putting? trying to deflect problems to something some dealer apparently sold someone wrong to then collect the fork again and replacing a lot of things...

I'm not sure what you're referring to, but I am happy to respond if you could provide more information. 

4
Kusa
Posts
277
Joined
6/25/2010
Location
CH
8/28/2025 9:32am
So is poor bushing fit and chassis bind now a "good thing"?Saying you don't notice bushing bind in a fork that has never been ridden without...

So is poor bushing fit and chassis bind now a "good thing"?

Saying you don't notice bushing bind in a fork that has never been ridden without the bushings binding is pretty funny.

https://www.pinkbike.com/news/comment-fork-alignment-and-friction-in-the-fox-podium.html

 

That article smells paid advertisement for miles. Given the fact you can get Podium USD at 10-25% discount these days, i guess its some damage control from Fox for sitting on too much stock with a bad reputation.

4
1
amaranth
Posts
181
Joined
10/19/2023
Location
Nutley, NJ US
Fantasy
8/28/2025 9:45am
trexyz wrote:
I have to say I completely agree with what’s already been said here. This type of mudguard solution is not new, other brands have been doing...

I have to say I completely agree with what’s already been said here. This type of mudguard solution is not new, other brands have been doing it for years. Personally, I run an EXT Vaia fork and bought this version of their fender:
https://visionvelo.eu/product/ext-vaia-racing-mudguard/ 

WhatsApp Image 2025-08-15 at 14.40.55 0

In my experience the quality isn’t great, the hose clamp actually broke after just two days of bike park riding and for the price it’s honestly pretty crazy for what’s essentially a mudguard. But regardless of the quality, the point is that this exact concept already exists on the market, so trying to claim novelty here just doesn’t really hold up. Also got one on my previous Dorado, the only difference was that the version from Manitou came with integrated stanchion protectors.

Same thing broke for me! I ended up drilling it through and ran 2 zipties. 

8/28/2025 11:38am Edited Date/Time 8/28/2025 11:38am

I'm not sure what you're referring to, but I am happy to respond if you could provide more information. 

sethimus wrote:

your very first post in this thread...

and the ones in this one:

https://www.vitalmtb.com/forums/hub/fork-chassis-axles-friction-burnish…

My responses are out of concern for a rider who spent what I consider to be a large amount of money with my company, and not being happy with the results. That's not acceptable to me. It doesn't matter where the customer bought our product; I only ask as it helps with context. In the case of my first post, the rider was trying someone else's fork, so there's no more than I could offer. 

In regard to the post that you linked...something about the original fork that Skunk Works received just seemed off, and we wanted a longer look at it. In order not to burden the customer, we decided to replace his fork with an entirely new unit under warranty in order to get him back on the trail more quickly, while at the same time allowing our engineering department to dissect that problematic fork to understand what was going on with it.  

We are not perfect, and we make mistakes. We also deal with supplier, material, and manufacturing defects. At the end of the day, I value our customers' money and have an extremely high expectation for both their product and support experience. I didn't mean to come off as deflecting, as I was truly concerned with understanding the situation more so that I could provide a solution that ultimately puts the customer in the right. 

Again, I apologize for coming off as anything other than just wanting to contribute to the threads and help. 

26
TEAMROBOT
Posts
1394
Joined
9/2/2009
Location
Los Angeles, CA US
Fantasy
8/28/2025 12:06pm
My responses are out of concern for a rider who spent what I consider to be a large amount of money with my company, and not...

My responses are out of concern for a rider who spent what I consider to be a large amount of money with my company, and not being happy with the results. That's not acceptable to me. It doesn't matter where the customer bought our product; I only ask as it helps with context. In the case of my first post, the rider was trying someone else's fork, so there's no more than I could offer. 

In regard to the post that you linked...something about the original fork that Skunk Works received just seemed off, and we wanted a longer look at it. In order not to burden the customer, we decided to replace his fork with an entirely new unit under warranty in order to get him back on the trail more quickly, while at the same time allowing our engineering department to dissect that problematic fork to understand what was going on with it.  

We are not perfect, and we make mistakes. We also deal with supplier, material, and manufacturing defects. At the end of the day, I value our customers' money and have an extremely high expectation for both their product and support experience. I didn't mean to come off as deflecting, as I was truly concerned with understanding the situation more so that I could provide a solution that ultimately puts the customer in the right. 

Again, I apologize for coming off as anything other than just wanting to contribute to the threads and help. 

Regardless of what any of our opinions are on the Nine One, I want to say thanks for being so involved in this thread and wanting to communicate clearly and directly. Direct and public communication between customers and the head of a suspension company is nearly unheard of, so it's appreciated!

Thanks, Darren.

29
8/29/2025 7:16pm Edited Date/Time 8/29/2025 7:18pm

                                                                                             Intend Flash 35 Update

The rain has finally come and the trails have been excellent as of late with the Flash getting some ride time and tuning. This is one of the best trails around, segment 28 of the Colorado trail above Durango. Roughly a 15 minute descent, great for suspension testing and tuning.

PXL 20250828 180055436 sml 0 PXL 20250828 183812293 sml.jpg?VersionId=Jhp

Being very similar, I assumed that the air spring settings from the Edge would transfer over to the Flash. This has not been the case. The air spring setup from the Edge running at 175mm was much too linear for the Flash at 190mm. Currently experimenting with pressures/volumes as well as the "linearizer" (2nd positive air chamber).

In addition, the LSC needle was changed at some point and is different from what is installed in the Edge damper. The latest version of the Intend LSC needle has a wider range, as well as increased resolution. There are now 17 clicks vs 11 for the older version, and the new needle will close off the LSC bleed entirely when fully wound in. Before there was still an open bleed across the piston even with the LSC adjuster fully closed.

The rebound feels the same and is a still a bit slow for the pressures being run. It will get re-valved softer, along with the compression being firmed up a bit. I can already feel that the new needle shape produces more damping when closed off.

So far the Flash 35 is what I expected, a slightly bigger and more robust version of the Edge. Even while still figuring out the setup, it is lots of fun on the front of a 180mm coil sprung Transition Spire!

No guards, no problems! 😁

vit1 sml

 

10
sethimus
Posts
881
Joined
9/20/2014
Location
CH
8/30/2025 12:05am Edited Date/Time 8/30/2025 12:07am

interesting, mine still as only 11 clicks of LSC, but mine was produced right after they announced the upgraded version in 2024. which settings did you settle at by now? i recently installed a fast suspension fenix 2, before, my x2 couldn't keep up with the fork, now the fork can't keep up with the shock. i want the same magic carpet ride feeling now on the front too

1
8/30/2025 9:04am

I think the needle was updated in 2025 to the 17 click version. It is easy to change the LSC needle, I am planning on it but currently the entire world is not shipping to the US. Not exactly an ideal situation. 

For the 11 click damper, LSC settings were around -2 (with the stiffer shim stack). Still setting the Flash up, but -2 on the 17 click damper is more supportive. 

In speaking with another Intend rider, this damper may benefit from tuning the mid valve "check shim" on the rebound piston (if you are looking for more support). It is common for moto forks to use the MV to generate compression damping. The base valve lags behind a bit due to the fact that it first requires the oil to be displaced by the damper shaft in order for any damping force to be developed. The MV itself can resist the initial movement of the fork, before the shaft displaces any oil. The MV damping produced is usually very minor in MTB forks, but it is still something. It is also dependent on how open or closed the rebound needle is. 

Mountain bike fork dampers typically utilize the MV simply as a check shim for rebound as it can easily get harsh if too restrictive. The Charger 2.1 is an example of this and is known for its MV "choke" at high shaft speeds. I believe it is related to the amount of float the check shim has (they are all backed by a spring and have some float before hitting a hard stop). The C2.1 has very little float for the MV check shim. 

 A few more rides then the Flash damper will get torn down for some experimenting.  I love this stuff!

 

1
johnsogr
Posts
36
Joined
3/31/2013
Location
Toronto, ON CA
8/30/2025 9:23am

Awesome, keep it coming! I know Craig at Avy utilizes the mid valve to provide damping in his carts, but they’re a much larger diameter than the Intend Damper.

1
ebruner
Posts
349
Joined
3/29/2018
Location
Tustin, CA US
9/2/2025 12:29pm
johnsogr wrote:
Awesome, keep it coming! I know Craig at Avy utilizes the mid valve to provide damping in his carts, but they’re a much larger diameter than...

Awesome, keep it coming! I know Craig at Avy utilizes the mid valve to provide damping in his carts, but they’re a much larger diameter than the Intend Damper.

Regarding the usage of mid valve and avalanche... Avalanche is using an open bath damper and not a closed cartridge.  That in and of itself, is not relevant to resulting damper performance... however how you get there is greatly impacted.  I digress, when dealing with an open bath damper, you're banking on foaming and aeration of the damper fluid.  This means that the usage of a mid valve for damping is much more common/relevant and it makes the overall mid valve vs base valve damping force balance a different animal for open bath vs closed cartridge dampers.  This is a theoretical point to make in this case.  

For what it's worth, I would love a discussion on this with regards to the different structure/design of the fork dampers that are currently on the market.  That being said, it has nothing to do with upside-down forks other than the fact that each of the USD forks has it's own damping circuit design and that obviously impacts the end result, perception and performance.  

3
ballz
Posts
476
Joined
7/30/2024
Location
Ouagadougou EH
9/2/2025 1:36pm
johnsogr wrote:
Awesome, keep it coming! I know Craig at Avy utilizes the mid valve to provide damping in his carts, but they’re a much larger diameter than...

Awesome, keep it coming! I know Craig at Avy utilizes the mid valve to provide damping in his carts, but they’re a much larger diameter than the Intend Damper.

ebruner wrote:
Regarding the usage of mid valve and avalanche... Avalanche is using an open bath damper and not a closed cartridge.  That in and of itself, is...

Regarding the usage of mid valve and avalanche... Avalanche is using an open bath damper and not a closed cartridge.  That in and of itself, is not relevant to resulting damper performance... however how you get there is greatly impacted.  I digress, when dealing with an open bath damper, you're banking on foaming and aeration of the damper fluid.  This means that the usage of a mid valve for damping is much more common/relevant and it makes the overall mid valve vs base valve damping force balance a different animal for open bath vs closed cartridge dampers.  This is a theoretical point to make in this case.  

For what it's worth, I would love a discussion on this with regards to the different structure/design of the fork dampers that are currently on the market.  That being said, it has nothing to do with upside-down forks other than the fact that each of the USD forks has it's own damping circuit design and that obviously impacts the end result, perception and performance.  

Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath version and am perfectly happy with it. Cornelius called it a personal preference with comparable performance, IIRC.

sethimus
Posts
881
Joined
9/20/2014
Location
CH
9/2/2025 2:19pm
ballz wrote:
Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath...

Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath version and am perfectly happy with it. Cornelius called it a personal preference with comparable performance, IIRC.

those were the green age forks before the optimized ones

ballz
Posts
476
Joined
7/30/2024
Location
Ouagadougou EH
9/2/2025 2:26pm
ballz wrote:
Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath...

Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath version and am perfectly happy with it. Cornelius called it a personal preference with comparable performance, IIRC.

sethimus wrote:

those were the green age forks before the optimized ones

The Essential shared the same damping parts as the Originals and Blackline forks, but it's a semi open bath system instead of the closed bladder version.

I haven't taken the damper apart, yet so I don't know how similar it is to other versions.

sethimus
Posts
881
Joined
9/20/2014
Location
CH
9/2/2025 9:48pm Edited Date/Time 9/2/2025 9:49pm

those are the ones they refer to as the green age ones (due to the sks seals), yours probably are having the older damper but the black racing bros seals

1
9/3/2025 7:52am
ballz wrote:
Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath...

Doesn't Intend offer the same fork damper with the same valving in two different packages - open bath and closed cartridge? I have the open bath version and am perfectly happy with it. Cornelius called it a personal preference with comparable performance, IIRC.

The newer sealed damper is very similar to the previous open bath version. Intend basically put a rubber bladder over the damper body, the compression unit still comes off in one piece from the bottom of the leg. 

The shim stacks are quite different however, the older version had a stiffer compression and a softer rebound tune. There is also (as of 2025 or so) a new LSC needle that is different from before. It has a slightly wider range, smaller adjustment steps (17 clicks vs 11), and closes off the LSC circuit more than the previous version. 

 

4
9/8/2025 6:05pm Edited Date/Time 9/8/2025 6:06pm

Made a video of me yappin about my experience and tuning journey with the infinity EN but tldr bullets below: 

- Damper tune not to my preference but solid architecture and easy to retune: Similarly to Skunk works, I wanted more compression and faster rebound. What I ended up on below. Interested in trying out the zero bleed LSC needle SWS mentioned. 
Stock "Optimized" Tune: Compression: 14x0.1, 13x0.1, 12x0.1 Rebound: 14x0.15, 13x0.15, 12x0.15

My Current Tune: Compression: 14x0.15, 14x0.10, 13x0.10 Rebound: 14x0.10, 12x0.15, 12x0.15

- I'm a fan of the airspring, very linear. Running way over recommended pressure. Using the least progressive/additional volume cap. Tried linearlizer but did not like it at all, way too progressive when running enough pressure in main to get enough support off the top/middle. 

- Infinite bushing spacing due to USD plus dual crown wombo combo is awesome. How free moving/frictionless it stays under braking/chonk is insane and took a little getting used to after being used to bushing bind on traditional forks. The additional torsional flex is only a benefit for the majority of riding IMO, but I did go from a 400g alloy xc wheel (was experimenting with more flex with traditional fork) to a carbon wheel to regain some steering stiffness so I do think there is such a thing as too much torsional compliance. 

 

9
Suns_PSD
Posts
362
Joined
10/7/2015
Location
Austin, TX US
9/9/2025 4:05pm Edited Date/Time 9/12/2025 11:16am

So if you guys were going to buy a new inverted 170mm fork for a full power e-bike and you plan to run fork guards and a 20mm front axle, would you choose:

1) Fox Podium?

2) Intend Flash 35?

3)  Wait for the Intend Flash 38?

4) wait for the new KYB (edited) given their decades of MX experience? Off the list.

 

It's interesting to me that Fox states that their testers clearly preferred the 20mm steel axle and others are like 'it doesn't really matter'. Certainly Fox has more testing resources but then maybe they used the wrong hub or something?

2
jeff.brines
Posts
1227
Joined
8/29/2010
Location
Grand Junction, CO US
9/9/2025 6:44pm
Suns_PSD wrote:
So if you guys were going to buy a new inverted 170mm fork for a full power e-bike and you plan to run fork guards and...

So if you guys were going to buy a new inverted 170mm fork for a full power e-bike and you plan to run fork guards and a 20mm front axle, would you choose:

1) Fox Podium?

2) Intend Flash 35?

3)  Wait for the Intend Flash 38?

4) wait for the new KYB (edited) given their decades of MX experience? Off the list.

 

It's interesting to me that Fox states that their testers clearly preferred the 20mm steel axle and others are like 'it doesn't really matter'. Certainly Fox has more testing resources but then maybe they used the wrong hub or something?

Wait the Showa fork is actually real (a new one I mean...)???

1

Post a reply to: Modern Inverted Single Crown Forks

The Latest