prototype RST inverted xc trail suspension fork

RST surprised us with a sneak peek at their prototype inverted suspension fork, which boasts a full magnesium one-piece upper. It’s aimed at the XC and trail crowd, but will get a 15×110 axle, the newer width being used for “boost” hubs. So it’ll likely work for the 27.5+ as well as 29er, though the latter is its primary target.

Internals are secret for now, but there’ll be measures to prevent the 32mm stanchions from turning independently. Expect a weight around 1,700g and travel options from 100mm to 140mm.

Head past the break for more details, pics and other new products…

prototype RST inverted xc trail suspension fork

prototype RST inverted xc trail suspension fork

The heavily shaped crown has a lot of work to do to keep the legs stiff.

prototype RST inverted xc trail suspension fork

It’s hard to tell from the pics, but the upper legs are slightly oblong, suggesting some sort of keyed shape or mechanism to prevent the lowers from twisting.

prototype RST inverted xc trail suspension fork

They said they stuck with 15mm thru axles instead of 20mm to keep the weight down and that in their computer modeling and preliminary testing, it’s showing as stiff enough to prevent uneven leg movement.

prototype RST inverted xc trail suspension fork

It’s unnamed so far, but it’s in their 2017 model year plans. They said development is moving along briskly, though, so it could be here well before the turn of the following year.

prototype RST stealth dropper seatpost

Their Stealth Elev8 dropper post coming around June, joining their standard remote and lever actuated models.

prototype RST stealth dropper seatpost

Retail is around $250 and it’ll have the same internals as the standard Elev8, just flipped, and you can convert the standard one to stealth on your own with an aftermarket kit.

RST Rogue 27.5+ suspension mountain bike fork

The 34mm stanchion Rogue trail fork is getting a wider, 27.5+ version with 110mm hub spacing.

RST Renegade fat bike fork

The RST Renegade fat bike fork was introduced last fall, but it just started rolling onto the market.

RST Renegade fat bike fork

Basics are 32mm stanchions, external compression and rebound adjustments, air spring and travel from 80 to 120 millimeters.

RST Renegade fat bike fork

Oh, and it’ll be available with straight and tapered steerers.

RST.com.tw

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Bluefire
Bluefire
6 years ago

…You know, I realized Fox probably wouldn’t be the next to market with one of these, but I certainly didn’t expect THIS. I was betting on Marzocchi. Good luck, RST.

Alb
Alb
6 years ago

Holy crap someone’s been busy. If this stuff works as well as it looks then RST will be onto winners. Re: dropper post – wasn’t aware they did one at all let alone a std Elev8?!

Derek
Derek
6 years ago

Inverted fork? 15×110 spacing? This is all SRAM’s fault!

Pantz
Pantz
6 years ago

Nice work Mike and Co. The fork looks pretty darn cool.

cxracer
cxracer
6 years ago

Now they just need to put this much effort into their customer service. I also think higher end products will be a hard sale. Thr RST name just doesn’t say quality.

Yoker
Yoker
6 years ago

RST 2016 Product Map = Sram 2015 Product Catalog

Tim
Tim
6 years ago

@cxracer- I agree that the RST name doesn’t say quality. But I think that’s for a pretty specific reason: RST’s high end is pretty low, as they don’t make any fork at the level of a SID or Boxxer. When you don’t even try in the high end of the market, people associate you with low quality. But I have to wonder if that’s justified- just because there’s no high-end forks in their line doesn’t mean that their, say $350 forks don’t work fine. Can’t say personally, though- I have never ridden them, unfortunately.

EdRivas
EdRivas
6 years ago

Fox is actually working on an inverted 36 fork with a carbon fiber upper. They have been keeping the details on the down low but it has been spotted at several bike trails and from what I have seen it looks to be a good collaboration between Easton/Race Face carbon technology and Fox suspension

darenot
darenot
6 years ago

No offense but I remember them as RST = Rock Shox Taiwan!

Chris
Chris
6 years ago

@darenot – I’m sure no offence taken, considering Rockshox themselves have been made in Taiwan since 2002.

Tim
Tim
6 years ago

I forgot to add my usual spiel about inverted forks. You’ll notice that almost all of them add some features not present on standard forks to up the torsional stiffness lost by removing the incredibly rigid fork brace. Maverick used double crowns, upper legs that bulged to baseball bat size, and a 24mm thru axle. Someone else (don’t remember who, it was a gold fork) used legs oval legs or that were keyed into each other to prevent twisting; someone else I don’t remember (these guys made their fork emerald green and it may be vaporware, I have not seen it on the market yet but may be wrong) turned the inner leg guards into sort-of fork braces. Rock Shox-SRAM made a (fake) 27mm axle. Manitou made an inverted fork fifteen years ago with a hex-shaped thru-axle to increase rigidity. And of course Cannondale made twisting much more difficult by integrating the axle into the fork leg and making the tubes square inside; they also used needle bearings instead of bushings, and so far have been the only inverted fork to come out ahead in terms of weight, torsional rigidity, and performance. The reason inverted fork designers add all these innovations: they need to. And almost all these innovations could be applied to a standard fork- imagine a Fox 36, rightside up, with keyed or oval legs, or maybe running on needle bearings, with a 24mm axle. It would be stiffer than an inverted fork with those same features.
And then we have this RST inverted fork, which seems to have nothing special going for it to increase rigidity- it even has the why-bother 15mm size thru axle. My guess- if it has some additional tricks up its sleeve, maybe it will end up being in the same league as a standard fork.

Haggis
Haggis
6 years ago

@Tim, their DH fork is in Boxxer (RC) territory price wise at $950 retail.

ZeGerman
ZeGerman
6 years ago

Hmm Im liking what I see. What an improvement on their past products. Design and weight looks nice and RST is normally not that expensive.
Could be a comeback for the RST brand.

Juan Pablo
Juan Pablo
6 years ago

Good on ya RST!