Formula Announce New Selva Coil Fork

Dec 12, 2019 at 5:15
by Formula  
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Press Release: Formula

In recent years the demand for coil-spring enduro forks has grown a lot, and we could not help but satisfy you.

Coil spring is a matter of feeling. A fork with a coil spring is neither better nor worse than an air fork, it’s just different. The small bump compliance of a coil spring fork is unmistakable, its linear behavior is very distinctive. If these are the things you are looking for, the Selva C is your address, a set-and-forget beast.

The Selva C has the same damping as the other models of the Selva family: compression, CTS (Compression Tuning System) with interchangeable valves, rebound, lock-out, and lock-out threshold. On the elastic side, you can choose between 4 different coils: soft, medium, firm, and super firm. The spring preload can be adjusted externally through the knob on the right side of the fork.





What does it take to produce a mountain bike fork? This time we want to bring you inside our Factory and show you a little part of our production process. We chose a brand new fork for this, the Selva C with coil spring. We want to show you how much care and love we put into making your forks, one by one.


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With the Selva C, we combined the ease of use and the feeling of the coil spring with the tunability of the CTS system, which allows almost unlimited configurations of the compression curve.


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Selva is more than just a fork, it’s a system of technologies. All Selva forks, regardless of the model, share numerous parts. This allows us to work on new products taking a retro-fit approach to it.

Every new technology that we put out can be extended to all Selva models currently on the market regardless of the year of production. Thanks to this approach, every rider can change the elastic side of his fork from a Selva S (single air) to a Selva R (double air) or a Selva C (spring) and vice versa. Our coil spring conversion kit can be mounted on all Selva forks out there. At Formula, we don’t want the riders to perceive their forks as being obsolete every time we offer new technologies.

We have a different goal in our minds. We want every rider who uses Formula components on his bike to be happy with the products and keep them on the bike as long as possible.

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Thanks to CTS technology (proprietary to Formula) the damping of the Selva C is fully customizable. With seven CTS valves available, each rider will find a tailor-made setting for his style. In addition, thanks to the external compression and rebound knobs, you can fine-tune the damping.

The seven CTS valves transform the way your fork behaves. These are not modifications effected through the use of traditional external controls. The CTS valve is a fundamental structural part of the hydraulic cartridge, changing the valve means changing the cartridge itself, modifying fork’s behaviour.

An obvious advantage of this system is that using different valves is like having more than one forks, each one appropriate for different situations.

Discover more about CTS at rideformula.com/cts


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More info about SELVA C and where to buy:

Selva C product page: https://www.rideformula.com/selva-c
International Distributors: https://www.rideformula.com/distributors
Dealer Locator: https://www.rideformula.com/dealers

Author Info:
rideformula avatar

Member since Jan 16, 2013
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145 Comments
  • 111 8
 I was going to spring out of my chair to buy this, but my wallet only contains air.
  • 19 2
 I see how you have steered us towards a puns thread.
  • 31 2
 @sngltrkmnd: well, the tone of the comments was starting to sag. I thought with a good pun, things might rebound.
  • 24 2
 can't be bothered with the puns today, guess I just don't give a fork.
  • 13 1
 Hopefully it will be offset with some actual discussion and rebound from being steered offline.
  • 1 19
flag JimmyWeir (Dec 12, 2019 at 18:45) (Below Threshold)
 Does it work for Enduro though
  • 7 5
 Quick, Release me from this torment - the godawful pun crap is back like a Bolt-Thru the blue...
  • 9 1
 If you follow the Formula correctly you can be a pun-master in no time.
  • 35 1
 Suit yourself. I just might buy my selva new fork.
  • 6 2
 You guys need to be more sensitive. I'm afraid we'll get lost and stem away from the topic.
  • 13 0
 Thanks, I was just waiting for your stanchion the matter.
  • 3 0
 You were knob alone. But then I thought there is no pressure, no need to get pumped.
  • 2 0
 We haven't scratched the surface yet with these puns.
  • 5 0
 I could compress as many shocking puns as possible into one comment...but I wouldn't want put a damper on things.
  • 3 0
 That seals it: Your comment takes the crown of this post. Or is there space for more progression? No pressure...
  • 1 0
 That's a hi-tech wallet, right there....
  • 31 1
 Love the idea of having a fork that can be modded and forward / backwards compatible.
  • 11 2
 Coil suspension has a much better feel in my opinion and I have it on my bikes, it's insanely compliant, supple and small bump compliant. The moto industry tried using air forks and most have come back to coils. I am glad that we are seeing a change in the bike industry as well.
  • 7 5
 No most are air coil hybrid
  • 6 2
 "every rider can change the elastic side of his fork from a Selva S (single air) to a Selva R (double air) or a Selva C (spring) and vice versa"

I wonder how they manage conversion from air to coil then back? that steel spring would certainly leave the inner wall of the stanchion scratched, at least a little, making it hard for an air spring to prevent air loss around the piston... or is it only convertible one way? Air to Coil... but not back?
  • 7 13
flag service01 (Dec 12, 2019 at 13:21) (Below Threshold)
 Notice there are two plastic/rubber shrink wrap around the spring that would prevent it from touching the sidewalls.
  • 103 1
 With the Selva, you can also go from coil to air. The two sides are switchable cause the chassis is symmetric. You can put the damping on the left and the elastic side on the right, so you have brand new stanchions to use with air. Once switched, you can also rotate the knobs on the damping side (this is why we call this part the "satellite"), so you have the knobs back in the best position. Wink
  • 4 2
 They explained it in some of their reviews. The thing is that you can use air on one side and coil on the other. Damper can be swapped into other side because both sides of the fork are identical
  • 138 3
 So what you are saying is that with this design, it’s possible to run both air and coil simultaneously?! I understand this means you don’t have a damper but whatever, that may just be the cost of going full enduro.
  • 8 1
 @rideformula: That is quite the clever solution! simple and elegant.
  • 44 1
 @ryan83: jeez you must not understand bikes very well.

Double damper is clearly the way forward
  • 11 1
 @sdurant12: hahaha, twice as much damping is clearly twice the performance (everyone knows that)
  • 5 1
 @ryan83: I got a lot out of this comment. Thank you.
  • 2 1
 @rideformula: I could run the a fork with 2 dampers then?
  • 2 1
 @thomas1965: and no spring?
  • 1 1
 @ryan83: air+coil is the beat solution, if sone right. Only avalanche really executes on this currently...
  • 2 0
 @sdurant12: or double spring, one air, one coil and no damping...
  • 1 0
 What about the push acs-3 or what ever its called. That seems like air coil @dangerfoot:
  • 2 0
 @ryan83: the question is: coil on the left and air on the right? Or the other way around? Does that have to do on which side you run your chain?
  • 9 0
 @ReformedRoadie: or maybe a fork with air, coil and two dampers and it'd have four legs...we could call it a fourk
  • 2 0
 @Lars-TB: coil is heavier, depends which way you whip. I get the same effect from my lefty
  • 1 0
 @ryan83: there you Go: forums.mtbr.com/shocks-suspension/crconception-cartridge-1074669.html
  • 1 0
 @rideformula: oh my, so simple so smart!
  • 1 0
 @rideformula: What about tightness of stanchion seals? Are you using the same seal kit for coil and air forks?
  • 7 1
 Selva S is one hell of a fork so this one should be cool as well, hope we will see some reviews soon.
  • 7 1
 Very happy you like the Selva S.
  • 3 0
 @rideformula: best fork i had so far between fox, rockshox, cane creek and dvo (only talking about premium)
  • 1 0
 @rideformula: thb it took me a while to understand how it works and adjust it to my needs - but on the trail? its awesome
  • 9 1
 100$ for purple paint?
  • 1 0
 yeah I noticed that WTF
  • 9 0
 @nojzilla: the purple ones are all painted by one bloke in Italy.. A bit of a formula tradition
  • 4 1
 The purple matches the stickers on my frame... the psychological boost I get from full color coordination is worth more than most other upgrades for the bike Razz
  • 3 0
 Noice! Stoked to see coil spring forks coming back. My first time on coil was putting Mountain Speed Coil springs in a Manitou EFC in 96'. Then came a couple Marzocchi Z1 Bombers, and a Fox Vanilla RLC. At the time each of those forks felt significantly better than air forks. Things have changed and the difference is a smaller margin in performance, but I'm going back to a coil soonSmile
  • 5 0
 @rideformula I have been dreaming of this fork.
I have the EXT storia on my Stumpjumper EVO.
This may be a match made in heaven.
  • 2 2
 or...
You can wait for EXT to release their fork...


www.mtb-news.de/news/gefraester-federgabel-prototyp
  • 3 0
 @Becciu: except this will be a new trickstuff fork which is mounted on a nicolai with ext shock.
  • 3 1
 @Becciu: This is the correct link to the EXT Fork thread
www.mtb-news.de/forum/t/geometron-diskussions-und-bilder-thread.772038/page-242#post-16247270
  • 2 0
 @spoegel: hahah i just copied the link and wanted to ad -wtf
  • 3 0
 @optimumnotmaximum: well, look like i've f@cked up.
In my defense, i've found the link on mtb-mag.
  • 2 0
 @Becciu: isn't that Intend?
  • 2 0
 @bok-CZ: Trickstuff and Intend are two different companies, they did some projects together but the fork in the link is trickstuff and the other one EXT
  • 1 0
 @Becciu: Thanks for the heads up! Good news all over the place Wink
  • 6 2
 Great news! Big thumbs up for making the fork in Italy. That's the way to go! I'd love to see a 170 or 180mm 29er though.
  • 4 3
 I am happy to see more coil forks straight from the manufacture. Never liked the inconsistency of air forks due to elevation and temperature change as well as the extra drag and stiction from the air spring seals. I've converted all of my forks to coil; mattoc, mezzer, deville 35, and emerald. I still service them just as often as an air fork but the bonus is there isn't really any perceptible decrease in performance between service intervals.
  • 2 0
 Please could you tell what parts you used for the Mezzer conversion, Im curious. Thanks.
  • 2 0
 Also the BOS? Could you please let me know how you did? Thanks
  • 1 0
 Just wondering. I have one do it all bike with my Megatower. I ride my local trails and in the bikepark. Would a coil fork, such as the Selva, be a good idea? For the park I can always add some psi, but this isn‘t possible with a coil.
  • 3 0
 @ryan83: spring change should be a 2min job, if it's acessed from the top.. Just get 2 springs..
  • 2 0
 @Lagr1980: Will this only take 2 mins. for real?
  • 3 0
 It's either two springs or get something that has some bottom out control like the Vorsprung Smashpot or the Push ACS3. I have the Smashpot and the linear coil with the adjustable progressivity of the bottom out towards the end of the travel is superb!
  • 1 0
 @pensamtb: I was wondering about that Smashpot and whether this would be a good idea instead of getting the Formula. It will be heavier than the Selva and may be louder too.
  • 1 1
 @niconj: should be less bolts than changing the spring on the rear shock of a few bikes
  • 1 0
 @niconj: add extra shrink wrap, a thicker grease and a click or two of rebound. Quiet.
  • 4 0
 I had no Idea that purple paint was so expensive...
  • 3 1
 "Selva is more than just a fork, it’s a system of technologies". Love the marketing from this brand! The pretty colours and visual FX just scream next level super tech.
  • 1 0
 Can you achieve something similar to the vorsprung bottom out adjuster with the compression cartridges? It gives adjustable ramp on the last bit of the travel so you can adjust that separate to spring rate
  • 4 0
 With the CTS, you can shape the compression curve as you want, it's like doing the shim stack of your fork. Here you can find more info on each CTS valve www.rideformula.com/technologies/cts. If you're going to keep the same setting you have now and working on the last ramp, only we suggest using the Neopos (this is for air-forks only). Here you can find more info about the Neopos www.rideformula.com/technologies/neopos.
  • 4 1
 Seems like a formula for success....
  • 4 2
 Forking bad pun.
  • 1 2
 Pls formula explain to me... With air you should set force of negative spring in relation to positive spring.. How with coil there is one negative coil spring equilibriing the wide range of stiffness brought by different positive coil springs... I know boxxers negative spring was the same style, just curious...
  • 8 0
 Coils apply much less force at full extension than air springs, exactly zero if you have no preload in fact. Because of this the negative spring is much less important than in air-sprung systems and they can often get by just with a little top-out spring regardless of the stiffness of the main spring.

Thinking about it another way, an air spring needs a negative spring that's strong enough to counter the force at full extension and that means that it's still going to be applying force even at the sag point. A coil feels great and sensitive right off the top and in the sag region anyway so you don't need a negative spring for anything aside from avoiding a harsh top-out.

Thinking about it one MORE way, all the fancy negative springs (Debonair, EVOL, Luftkappe, Corset) are trying to get an air spring to behave more like a coil does without a negative spring at all.
  • 2 2
 @melanthius: except the progression rate. There is a reason why every downhill rider uses air at the front of the bike. In my opinion, progressive coil is the way forward.
I'm coming from a coil to air spring with negative coil spring, and I should've done it earlier.
There is at least two brands today with progressive springs for the rear shock of the bike, but none to use in the front. Yet.
  • 1 0
 @Notmeatall: Push ACS-3 insert uses air/coil hybrid that is progressive.
  • 2 0
 @ashtarsharan your perception of what a negative spring does has been skewed by all the recent high volume negative spring marketing jargon.

A negative spring is a top out spring, giving the fork a small amount negative travel / opposing resistance to the main spring to stop any top out clunk.

With air springs, the negative spring has taken on the added roll of increasing initial sensitivity (they don't reduce friction) by helping to try and compress the fork at full extension.

If you could over pressurise an air negative spring, or add too many volume spacers, you would actually start to compress the fork, increasing it's negative travel.

With changing coil spring rates, you don't really need to change the negative coil spring to match, as coils are only slightly compressed at full extension inside the stanchion, and the negative spring will likely still be able to compensate.
  • 1 0
 You can still use a coil negative spring with an air spring (Mz 350s had this) but an air negative spring allows better control of how supple the initial stroke is and for how far into the travel
  • 1 0
 @Notmeatall: more oil volume in lowers will give the progression and keep everything lubed much better
  • 1 0
 @ctd07: the selva s has it too and for riders around 70-75kg it works very good. There is also an optional harder negative spring.
  • 1 0
 @ctd07: thanks.. This system made my tired brain confused. So that question had occure. I had durolux spring system at mind.. Its the same as mz
  • 1 0
 @ctd07: dvo uses the coil for negative spring
  • 2 0
 @Notmeatall: This may be of some interest to you. www.raceonlysprings.com/product/high-performance-race-only-spring
  • 1 0
 @ctd07: as do x fusion.
  • 4 1
 1170$ for a single crown coil fork. I want to go back to 2007 :-((
  • 1 0
 @rideformula Stoked to see you guys have a coil option back in the line up, hopefully a first step back into OEM availability for coil in the general market!
  • 2 1
 @rideformula Latest trends dictates offset shorter than 40 mm. Any thoughts on this?
  • 3 2
 Um, that marketing pitch seems a bit off. Maybe lost a bit in translation? Sweet fork tho.
  • 3 1
 pretty sure I have that background on my iPhone...
  • 2 4
 I like the concept of the coil forks, the one thing I always wonder is how does it work for weight differences? Air forks, adjust the air to your liking and weight. Is that what the coil preload adjustment is for?

For example: If I am 200lbs and I buy a coil fork, could a friend who is 130-150lbs ride my bike and just adjust the fork or do springs have to be changed?
  • 2 1
 @Ryan2949 Springs have to be changed. Most ship with a couple spring options.

e.g. (mrp spring chart)
i.shgcdn.com/1c8bec60-3124-4151-a206-3eed93fc42ca/-/format/auto/-/preview/3000x3000/-/quality/lighter
  • 1 2
 @sutter2k: I posted this before waiting for the part in the video where he explains the soft, stiff and extra stiff springs. I assume that's what the spring colour wraps represent (green, blue, black).
  • 1 1
 (Deleted)
  • 8 8
 Where’s the 20mm axle version ?!?

You cannot have coil with a weazly 15mm axle, you have misunderstood your end users preferences completely...
  • 2 1
 it says it's optional
  • 1 1
 Not true, the so-called end users you refer to will find it quite easy to drill out the axle to 20mm from 15.
  • 1 0
 traditional offsets might upset some people, not me though, would love to try it.
  • 2 2
 Summary:

Take phat purple dank vape rips with the Selva C and dial in your high with the CTS (Cannabis Terps System) cartridges.
  • 2 0
 Chris Porter must be so happy coil fork and a ext out back
  • 1 0
 Really clever and nice product.
Why don't we see more of Formula products in the trails?!
  • 1 0
 I ordered a 29‘‘ version today and will have it next week. Can‘t wait to try it out.
  • 1 1
 Well I guess they missed the boat on the new 27.5 offsets... 37mm feels so good!
  • 1 0
 great to see another fork with coil
  • 2 1
 I thought it was that rampage Marzocchi for a second....
  • 1 0
 Not nearly as nice looking
  • 4 2
 Cute it's purple
  • 2 1
 for a hundred bones extra
  • 2 3
 Not that I care about such things, but the press release assumes the rider is a dude. Whatever, I'm down for a purple 180 coil version.
  • 1 1
 Formula..what would be the equivalent to a Fox36 Elite in 29/27.7+ in your coil arsenal? Sorry if I missed the obvious.
  • 3 0
 Hi, all Selva forks 29"can go from 120 to 160mm and they share the same damping. We don't have a "range" in a traditional sense. The differences in price are due to production costs. Let's say that all Selva forks are the top of the range but you can choose between three different elastic sides: coil, double air and single air with negative spring. You can find more info here www.rideformula.com/cat/mountain-bike.
  • 3 2
 Is this the same Formula that makes the shitty OEM hubs?
  • 2 0
 No, This formula make high end hubs and wheels
  • 2 0
 No
  • 1 0
 Formula is the new (old) Marzocchi !
  • 1 0
 Can't wait to ride my new forks... Bravo Vitto, nice video ;-)
  • 1 0
 there is no way to reduce travel with the coil spring?
  • 3 3
 no 180mm travel offer?? why?
  • 7 1
 We're working on it...
  • 3 7
flag chucknorris99 (Dec 12, 2019 at 13:59) (Below Threshold)
 @rideformula: ma state lavorando anche su qualcosa possibilmente da uomo o rimarrà sulla linea uomini e donne (Maria De Filippi edition)?
Grazie per la vostra risposta e cya al montsass cun debura
  • 8 0
 @chucknorris99: In effetti avevamo pensato ad un modello per soli uomini in pelle di cinghiale, ma non abbiamo trovato nessun fornitore disposto a rifornirci, pare sia colpa del fatto che siamo nel 2019. In compenso stiamo pensando ad un modello ispirato al balletto classico, vorremmo mettere una calzamaglia in regalo nella confezione.
  • 1 1
 @rideformula: strepitosi ????
  • 1 2
 @rideformula:
Penso che se dovesse uscire questo presunto Modello antivegan sarei il primo a comprarla. Immagino che lo shaft sarà costruito interamente in avorio e al posto dell’aria vi sarà l’apposito ingresso per il gas nobile (peto di mucca stagionato 12 mesi)
Potete prendere già la mia prenotazione a nome di Enrico Pasquale Pratticó. Abbito a mont San Iuvanni e nella vita zappo, a vigna ovviamente.
Per la spedizione non preoccupatevi, mi preoccuperò di ritirarla personalmente con il mio fiurinu ammetano.
Cordialmente,

Ben deakin #oioi
  • 4 0
 @chucknorris99, io ti consiglio di prendere coraggio, di fare coming out, senza paura. Starai meglio con te stesso. Vedrai, ti piacerà, senza vergogna.
  • 3 3
 No bottom out ramp control?
  • 2 3
 Dvo does this but they save weight by using the coil for only the first part of stroke and air for rest
  • 3 2
 not true, DVO use a coil negative spring and air positive
  • 2 2
 @Civicowner: the DVO Off the Top spring is not a negative spring.
  • 2 0
 @sriracha: ....it is though?

tech.dvosuspension.com/setup/diamond/ott-guide

"Now a firm set-up can also have amazing small bump sensitivity. This is accomplished by externally adjusting the preload on the negative springs"

ott is just a negative spring with externally adjustable preload
  • 3 0
 @Civicowner: I stand corrected.
  • 1 0
 @sriracha: all good mate, have a good one
  • 1 0
 @Civicowner: So watching this video tech.dvosuspension.com/service-guides/diamond/diamond-boost-travel-change

You can see when he takes it apart that he has air in the negative spring, no? It appears that it is both a coil and air negative spring? Maybe as it they suggest the OTT is just for the first part of the stroke.
  • 1 0
 @sriracha: Don't give up so easily you are not wrong: tech.dvosuspension.com/setup/diamond/air-pressure-guide-sag
  • 1 0
 @Kmccann137: yeah it uses an air neg spring the coil is just so u can tune it, most forks are fixed unless you get a luftkappe or whtever
  • 1 0
 oh nice
  • 1 0
 Why no 180mm?
  • 1 2
 Agg a sasizz mpare, ci sta pure il colore da uomo?
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