Yeti just put a shock and an entire linkage on notice. Pinkbike spotted a patent filing describing a suspension system with no linear shock and no linkage at all — instead, rotary pivots sit directly at the front and rear axles, and impacts apply torque to a resistance mechanism built into the pivot itself. No sliding rails. No rocker links. No shock body bolted to the frame.

That’s a strange thing to see from Yeti two months after it finally killed Switch Infinity — the sliding-pivot design that defined the brand for twelve years — in favor of Sixfinity, a conventional six-bar linkage. We covered that switch when it landed on the Yeti MT and the LT. Sixfinity was supposed to be the next chapter. This patent reads like Yeti is already looking past it.

Quick Take

What was filed	A 191-page patent application for a rotary suspension system
What it replaces	Linear shock + linkage, at both the front and rear axle
How it works	Rigid frame, rotary pivots at the axles; impacts apply torque to a resistance mechanism in the pivot
Resistance options listed	Elastomer stacks, rotary fluid dampers with compression/rebound valving, air springs, torsional springs
Where it’s categorized	Gravel bikes, suspension forks, and XC bikes — not primarily long-travel enduro or DH
Likely travel range	Patent language skews toward systems under 150mm
Reported by	Pinkbike, twice, in late October 2026
Is this shipping on a bike?	No. This is a patent filing, not a product announcement
Relationship to Sixfinity	None directly — Sixfinity is still Yeti’s production six-bar platform. This patent is a separate, more radical concept

What Is Yeti’s Rotary Suspension Patent, Exactly?

A rotary suspension system replaces the shock-and-linkage setup on a normal mountain bike with a sealed rotary unit mounted at the axle itself. Instead of the wheel moving a linkage that compresses a shock, the wheel’s vertical movement turns the rotary pivot directly, and a resistance mechanism inside that pivot — not a shock three inches away — absorbs the hit. No linkage translates the motion. The axle does the work.

Pinkbike’s initial spot covered the basic mechanism. A second piece, examining the six-bar-style math behind the filing, is the one that actually explains why this is harder than it sounds.

Why Ditch the Shock and Linkage Entirely?

Every suspension platform Yeti has built — Switch Infinity, Sixfinity, even the four-bar systems that came before both — exists to solve one problem: translate a wheel’s arc into something a shock can compress in a straight line, while controlling anti-squat, anti-rise, and leverage rate along the way. That translation is the linkage’s whole job. It’s also where weight, pivot count, and bearing wear live.

A rotary system skips the translation step. The resistance mechanism sits where the motion already happens — at the axle — so there’s nothing to translate. According to Pinkbike’s breakdown, the patent itself walks through the kinematic math for 2-bar, 4-bar, and 6-bar linkages to make the case, defining leverage ratio as a function of vertical travel against the arc length the rotary unit travels at a given radius from the pivot. That’s Yeti building the comparison into its own filing: here’s what six-bar linkages have to do to hit a given leverage curve, and here’s how a rotary unit gets there with none of it.

What Are the Resistance Options in the Patent?

The filing doesn’t commit to one damping method. It lists several, which tells you this is closer to a concept patent covering a design space than a spec sheet for a bike that’s about to ship:

1. Elastomer stacks. Discs of elastomer compressed in series — simple, no seals to fail, but with the temperature sensitivity and progressive-not-linear feel elastomers have always had.
2. Rotary fluid dampers with compression and rebound valving. The closest analog to a normal shock’s damper circuit, just packaged to spin instead of slide.
3. Air springs. With or without fluid damping layered in — the same air-spring-plus-damper split you’d find in a modern fork, rotated into a different housing.
4. Torsional springs. Also with or without fluid damping — a coil-style spring rate, but wound to resist rotation instead of compression.

Four different mechanisms in one filing is a company keeping its options open, not a company that’s already picked a damper vendor.

Not Just a Long-Travel Play

Here’s the detail most coverage is skipping past: the patent’s categorization covers gravel bikes, suspension forks, and XC bikes. It’s not filed primarily as an enduro or DH technology. Combine that with Pinkbike’s read that most of the described applications sit under 150mm of travel, and this starts to look less like a Sixfinity successor for the LT and more like Yeti exploring whether rotary pivots could get suspension — real, damped suspension — onto bikes that don’t currently have room for a shock at all. A gravel bike with a few millimeters of rotary compliance at each axle is a genuinely different product category than anything in Yeti’s current lineup.

That’s also the most speculative part of this whole story, so be clear-eyed about it: a patent application describing gravel and XC use cases is not the same as Yeti announcing a gravel bike. Companies patent broadly on purpose, partly to keep competitors from boxing them in on adjacent categories they may never ship. Pinkbike’s own reporting treats this as exactly that — a filing worth dissecting, not a roadmap.

The Catch: Rotary Cartridges Are Small

Pinkbike’s engineering breakdown lands on the tradeoff that actually matters for riders, not patent lawyers: rotary cartridges are physically smaller than a linear shock. That’s the whole appeal for packaging — no shock eyelet, no linkage bars eating frame space — and it’s also the limitation. A linear air or coil shock has a lot of internal volume to work with, which is part of how it manages travel range, heat, and a wide tune window without the spring curve falling apart. Compress that into a cartridge that lives inside an axle, and you’re working with a fraction of the volume.

That’s consistent with the travel ceiling showing up in the patent language. It’s a lot easier to make a small rotary resistance mechanism work when you’re asking it for 120mm of XC travel than when you’re asking it for 170mm of enduro travel and the heat load that comes with repeated big hits. Hitting the same kinematic targets as current linkage designs — the anti-squat and anti-rise curves Yeti spent years tuning into Sixfinity — gets harder, not easier, when the hardware doing the work is this much smaller.

How This Compares to What Yeti Just Shipped

Sixfinity, which replaced Switch Infinity on the MT and the LT this year, is still a linkage-and-shock system — it just uses six pivots instead of a sliding rail to get there, and it lets Yeti’s engineers decouple anti-squat, anti-rise, and leverage rate more independently than Switch Infinity’s coupled kinematics ever allowed. The rotary patent isn’t an evolution of that approach. It’s a different branch entirely — one that throws out the linkage Sixfinity depends on rather than refining it.

Worth noting: RockShox did something conceptually adjacent on the shock side earlier this year, when it built its own version of Specialized’s GENIE dual-air-spring shock rather than licensing Fox’s. Different problem, same industry instinct — suspension companies are still finding room to rethink parts of the system that have looked settled for a decade. Yeti rethinking the shock-and-linkage pairing itself, rather than just the spring curve inside one shock, is a bigger swing than that. It’s also a swing that may never leave the patent office.

Should This Change How You Shop Right Now?

No. If you’re cross-shopping trail forks or a rear shock today, nothing in this filing is buyable, and nothing in Yeti’s current lineup — Sixfinity included — is affected by it. Patents get filed years before, or instead of, a production part. Yeti has a track record here worth remembering: Sixfinity itself spent close to a decade in development and World Cup testing, debuting first on the 160E eMTB and then the MTe, before it ever reached an acoustic bike. If this rotary concept follows a similar runway, the earliest you’d see it on a shop floor is years out, not months.

Who Should Care About This

Riders who’ve followed Yeti’s suspension story since Switch Infinity. This is the company that built its entire identity around one unusual mechanical idea for twelve years. Watching it patent a second one this different, this fast after retiring the first, says something about how Yeti’s engineering team thinks about differentiation.

Anyone curious about suspension outside the usual 130-170mm trail/enduro band. The gravel and XC framing in this filing is the more interesting story than another enduro platform would have been. Damped suspension that fits in a cartridge small enough for a gravel axle doesn’t exist in the market yet, in any brand’s lineup.

Who Should Skip This

Anyone expecting a new bike announcement. There isn’t one. This is a patent filing, reported and dissected by one outlet so far, with real engineering substance behind it and zero indication of a ship date.

Riders shopping in the next six months. Treat this as background, not a reason to wait. The MT and LT you can buy today run Sixfinity, and that’s not changing because of a patent application.

The Bottom Line

Yeti filed a 191-page patent for a suspension system that gets rid of the shock and the linkage both, replacing them with rotary pivots at the axles and a resistance mechanism — elastomer, fluid damper, air spring, or torsional spring — built into the pivot itself. Pinkbike’s reporting and its follow-up engineering breakdown both treat it as a serious piece of engineering, not a paper patent — but also flag the real constraint: rotary cartridges are small, and small means a tougher time hitting the travel range and kinematic targets current linkage systems already nail. Filed for gravel, fork, and XC applications rather than long-travel enduro, this isn’t a Sixfinity replacement. It’s Yeti checking whether there’s a third way to do suspension at all, months after finally retiring the second one.

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Reporting sourced from Pinkbike’s initial coverage and Pinkbike’s engineering breakdown, both published in late October 2026. No Yeti representative has spoken with our team directly, and no product using this patent has been announced.