On 29 July 2026, Shimano did two things at once. It launched the lightest, most aerodynamic Dura-Ace wheels it has ever made, and it quietly published the first product ever to carry an official 9300-series model number. This guide covers everything confirmed about the new Shimano Dura-Ace R9370 wheels: full specs, claimed weights, pricing in three currencies, and September 2026 availability. Then it follows the evidence trail suggesting a new Dura-Ace R9300 groupset is closer than Shimano wants to admit. Every figure here comes from the launch materials and the reporting published within days of the announcement, so you're reading the current state of play, not last season's rumors.

Key takeaways

- Five new models: C36, C50 and C60 road wheelsets plus a C99 front wheel and a full Rear Disc for TT/triathlon, on sale from September 2026.

- Carbon spokes arrive: a first for Dura-Ace, cutting 159–220 g per wheelset versus the outgoing R9270 generation (the C36 is now 1,170 g).

- Faster too: Shimano claims up to 2.7 W less drag at 48 km/h on 30 mm tires.

- Aggressive pricing: $2,970 / £2,299.98 / €2,799 per road wheelset, undercutting Roval and Zipp's carbon-spoke flagships.

- Fully compatible today with 12-speed Dura-Ace R9200 and Ultegra R8100 Di2 drivetrains.

- The R9300 signal: these are the first officially numbered 9300-series products, and the patent, app-leak and pedal-code evidence points to a new Dura-Ace groupset between late 2026 and mid-2027. Whether it will need a new freehub is still unconfirmed.

What's New in 2026: The Dura-Ace WH-R9370 Range at a Glance

The WH-R9370 series is Shimano's first top-tier wheel overhaul since the R9270 generation, and the pitch is simple: lighter, more aero, stiffer. If you watch pro racing closely, none of this came as a surprise. WorldTour teams had been riding these wheels as unmarked prototypes since Opening Weekend of the 2026 spring classics, months before the 29 July announcement made them official.

The lineup spans five models. Three are conventional road wheelsets sorted by rim depth: the C36 for climbing, the C50 for all-round racing, and the C60 for flat stages, breakaways and sprints. The other two are dedicated time-trial and triathlon products, a C99 front wheel with a 99 mm deep rim and a full Rear Disc built to pair with it. Consumer availability begins in September 2026 for both OEM and aftermarket channels. Exact timing varies by region, and Shimano has not committed to a specific date within the month, so if you want a set for the tail end of the 2026 season, get your order in with your dealer early.

Here is the complete range, with claimed weights and pricing:

Two headline claims frame the whole launch. First, weight: depending on depth, each road wheelset is 159 to 220 grams lighter than its R9270 predecessor. Second, aero: Shimano claims up to 2.7 watts less drag at 48 km/h, measured with 30 mm tires against the previous generation. Neither number transforms a bike on its own. Arriving together, at a price below the previous generation's key rivals, they add up to the most competitive wheel launch Shimano has ever produced.

Carbon Spokes at Last: The Tech Behind the Weight Drop

The single biggest change, and the source of most of the weight saving, is that these are Shimano's first Dura-Ace wheels with carbon spokes. Zipp, Roval and Cadex have built flagship wheels around carbon spokes for years while Shimano stuck with steel through the entire R9270 generation. That conservatism is over, and Shimano went further than a simple material swap.

There are two distinct carbon spoke profiles in the range. The standard Aero profile measures 4.0 × 1.1 mm and is used across the C36, C50 and C60 road wheels. The Super Aero profile is wider and thinner at 5.2 × 0.8 mm, a more extreme bladed shape reserved for the C99 front wheel, where a knife-thin spoke pays off most and crosswind handling is already dictated by the 99 mm rim anyway.

Spoke counts are tuned per model rather than standardized, and the pattern tells you exactly how Shimano expects each wheel to be used. The climbing-focused C36 runs 18 front / 21 rear, the minimum for low weight. The all-round C50 runs 21/21. The sprint-oriented C60 runs 21 front / 24 rear, with the three extra rear spokes there for drive-side stiffness when someone puts 1,400 watts through the hub. The C99 front gets by with just 16 Super Aero spokes.

The hubs are the range's most contrarian engineering decision. Nearly every premium competitor has moved to sealed cartridge bearings. Shimano kept its adjustable cup-and-cone system, then doubled down on the serviceability argument by adding replaceable bearing cups and improved waterproof sealing. A cartridge bearing is disposable by design. A cup-and-cone hub can be cleaned, re-greased and re-adjusted indefinitely, and now even a worn cup no longer writes off the hub shell. For a wheelset likely to outlast two or three drivetrains, that is a genuine long-term ownership advantage, not nostalgia.

Pro tip: cup-and-cone hubs reward maintenance. If you ride through winter, budget for an annual service. With fresh grease and correct preload these hubs routinely outlast cartridge systems, but neglected preload will wear the races faster than a sealed bearing would fail.

R9370 vs R9270: Exactly How Much Lighter and Faster?

Generation-on-generation comparisons are where this launch earns its headlines, so here are the numbers side by side:

The C60 is the biggest winner. It sheds 220 grams, enough to move it out of heavy-aero-wheelset territory to within 90 g of where the old C50 sat. The C36's 180 g saving takes it to 1,170 g, a figure that puts a mass-production, five-model Shimano wheelset into boutique climbing-wheel territory. One honesty note: claimed weights vary slightly between outlets. Tour Magazin lists the C36 at 1,172 g and the C60 at 1,391 g, 2 g off the figures most media received. Treat all of these as Shimano's claimed specs until independent scale weights show up in reviews this autumn.

Does 159–220 g matter? On a flat road, barely. On a long climb it is measurable but modest, well under a watt of climbing power for a typical rider on a 7% gradient, worth a handful of seconds over a long ascent. The more interesting question is where the weight comes off. Spokes and rim are rotating mass at the wheel's perimeter, the mass you re-accelerate with every surge, and the raw wattage math consistently undersells how that feels. Anyone who has swapped to lighter rims will tell you the bike snaps out of corners and answers attacks differently, even when the spreadsheet says the gain is tiny. Add the claimed 2.7 W aero improvement at 48 km/h on 30C tires and the R9370 range is quicker on paper in both directions, uphill and on the flat. That is precisely the no-compromise-between-depths story Shimano wants to tell.

Key takeaway: if you already own R9270 wheels, the upgrade case is real but incremental. This is a 150–220 g and low-single-digit-watts step. If you are on aluminum wheels or a previous-generation aero set, the jump is far more significant.

Rims and Tires: 23 mm Internal, Built for 28–30C, Hooked Not Hookless

The rim dimensions tell you what Shimano believes about modern road tires. Every road model in the range moves to a 23 mm internal width, up from 21 mm on the R9270 generation, and the rims are explicitly optimized for 28–30 mm tubeless tires. If you are still racing 25C rubber, these wheels are politely telling you to move on. A 25 mm tire on a 23 mm internal rim measures wider than its label and loses the aerodynamic tire-to-rim transition the rim shape was designed around. Fit 28s, or 30s for rough roads, and you get the intended profile plus lower pressures, more grip and more comfort at no aero penalty.

External widths are front/rear-specific on the deeper wheels, a detail most launch coverage skimmed past. The C36 measures 29.4 mm front and rear. The C50 runs 31.0 mm front / 32.0 mm rear, and the C60 runs 31.5 mm front / 32.3 mm rear. The logic holds up: the front wheel dominates crosswind handling, so it gets a slightly narrower, more stable profile, while the rear, which barely affects steering, can go wider for aerodynamics and tire support. The C99 front is the outlier at a substantial 35.2 mm external.

Two decisions will keep the forums busy for months. First, the rims are hooked, not hookless. Shimano stayed out of the hookless debate entirely, which means no tire-compatibility charts to consult, no 5-bar pressure ceilings, and any quality tubeless or clincher road tire in the right size simply works. After the hookless controversies of recent seasons, plenty of riders will read that as a feature. Second, there is no tubular option at any price point, the first time a Dura-Ace wheel generation has dropped tubulars completely. The message is hard to miss: tubeless with hooked beads is Shimano's answer for everything from WorldTour sprints to your Sunday club run.

C36 vs C50 vs C60 (and the TT Wheels): Which One Is for You?

With identical pricing across the three road wheelsets, $2,970 / £2,299.98 / €2,799 whichever depth you choose, the decision comes down to riding, not budget. That is unusual, and honestly refreshing. There is no "the deep ones cost more" tax, just a choice of tool.

Use this framework:

Choose the C36 (1,170 g) if:

• Your key events or favorite roads involve long, sustained climbs — alpine gran fondos, hilly race circuits
• You weigh under ~65 kg and get pushed around by crosswinds on deeper rims
• You value lively handling and quick accelerations over top-end flat speed

Choose the C50 (1,302 g) if:

• You want one wheelset for everything: racing, fast group rides, rolling terrain
• Your events mix climbs, flats and descents with no single dominant demand
• You are unsure. The C50 is the default answer, and the 21/21 spoke build suits the widest range of riders

Choose the C60 (1,389 g) if:

• You sprint, ride breakaways, or race predominantly flat courses and criteriums
• You are a heavier or more powerful rider — the 24-spoke rear was built for exactly this load
• Aero matters more to you than 200 g of climbing weight (on flat roads, it always should)

Choose the C99 front + Rear Disc if:

• You race time trials or non-drafting triathlon; the 792 g C99 front and 987 g Rear Disc were designed as a pair
• Note the combination costs $4,625 / €4,198 and is a dedicated race-day setup, not a training set

A scenario to make it concrete. A 72 kg rider doing club races, fast chaingang rides and one mountain fondo a year is better served by the C50 than by owning a C36 "for the fondo." The all-rounder gives up almost nothing on the climb (132 g) and gains real speed everywhere else, all season. Flip it around: a 58 kg pure climber who dreads gusty descents should take the C36 and never look back, because the 29.4 mm external profile is the calmest wheel in the range when the wind turns sideways.

Price Check: R9370 vs Zipp, Roval and the Carbon-Spoke Competition

Shimano flagship products are rarely called bargains, which makes the R9370 pricing the quiet shock of this launch. Put the C50 against the two carbon-spoke wheelsets it will most often be cross-shopped with:

The Roval Rapide CLX III, the benchmark all-round race wheel of the past two seasons, weighs within a few grams of the C50 and costs roughly €700 more. Zipp's 353 NSW is marginally lighter at 1,255–1,310 g but typically pricier still. In short, Shimano has matched the boutique carbon-spoke market on weight while undercutting it by 20–25% on price, and it backs that with a hub system designed to be serviced rather than replaced, plus guaranteed drivetrain integration from the company that makes your groupset.

The value picture sharpens against Shimano's own history too. Every R9370 road model shares the same UK price of £1,099.99 front / £1,199.99 rear, despite the new carbon spokes and lower weights. There is a strategic read here as well. Shimano can price this way because of manufacturing scale no boutique wheel brand can approach, and because from September these wheels ship on complete flagship bikes through the OEM channel. For the aftermarket buyer, the result is simple: the traditional flagship-wheel premium has flipped into a discount against the carbon-spoke class.

If your budget stretches to only one premium upgrade in 2026 and you already run a 12-speed Shimano drivetrain, it is hard to build a rational case for paying more for the equivalent Roval or Zipp. The exception is the rider chasing minimum weight at any cost, where the 353 NSW's lighter build or the C36's 1,170 g remain the arguments.

The R9300 Signal: Why These Wheels Say a New Dura-Ace Is Close

Now for the part of this launch that matters even if you will never spend $2,970 on wheels. The model number is WH-R9370, and that makes these wheels the first products Shimano has ever officially labeled with a 9300-series number. Shimano's naming convention is rigid: the R9200 groupset generation came with R9270 wheels. Wheels numbered R9370 belong, by the same logic, to a groupset generation called R9300. Which does not officially exist. Shimano just told us it will.

The evidence has been stacking up for over two years. Here is the timeline:

• 31 August 2021 — Dura-Ace R9200 12-speed Di2 launches. As of this month it is nearly five years old: the longest gap between Dura-Ace generations of the electronic era.
• May 2024 — Shimano files a patent showing a 2×13 drivetrain with fully wireless derailleurs, each carrying its own independent battery. That is a clean break from R9200's semi-wireless, central-battery design, and widely read as engineered to route around SRAM's wireless-shifting patents.
• 25 March 2025 — a USPTO trademark for "SPD-SLR" is registered, describing pedals containing a bicycle power meter. That points at Shimano's first power-meter pedals.
• June 2025 — competitive pressure arrives: Campagnolo Super Record Wireless 13 begins shipping a full 2×13, fully wireless groupset to consumers (though, tellingly, zero of the 18 WorldTour teams race it).
• March 2026 — an E-Tube Project app update briefly exposes a 13th cog in the "Gear usage rate" view, spotted by a BikeRadar reader and confirmed by BikeRadar. Shimano responds that its portfolio does not include 13-speed options but was, in its words, "designed with future compatibility in mind."
• Spring 2026 — prototype Dura-Ace pedals appear at Paris-Roubaix, and leaked product codes reference PD-R9300 and Ultegra PD-R8200 SPD-SLR pedals.
• 29 July 2026 — the WH-R9370 wheels launch: the first official 9300-series products.

What has not happened is just as informative. R9300 never appeared in pro racing through the end of the 2026 Tour de France, where Dura-Ace Di2 was still the most-used groupset (~13 of 23 teams, versus ~9 on SRAM Red AXS after high-profile switches by Visma, EF Education, Decathlon and Pinarello–Q36.5). The outlets that have tracked these leaks now expect an official unveiling between late 2026 and mid-2027, with realistic retail availability Q4 2026 at the very earliest and quite possibly 2027. Press estimates, clearly unofficial, put a complete R9300 disc groupset around €5,000 / $4,899, roughly 5% above R9200's current ~$4,399. For the deeper dive into what a wireless, 13-speed Shimano future means for ordinary riders, see our full analysis in Shimano's Wireless Future: What 13-Speed and New Groupsets Mean for Road Cyclists in 2026.

Should You Buy R9370 Wheels Now or Wait for R9300?

This is the question every upgrader is really asking. Start with what is confirmed: the R9370 wheels ship with Shimano's current 12-speed Direct Engagement freehub (Center Lock disc, 12×100 mm front / 12×142 mm E-thru rear) and are fully compatible with today's Dura-Ace R9200 and Ultegra R8100 Di2 drivetrains. Buy them in September, bolt them onto your current bike, and everything works.

What is not confirmed: whether a future 13-speed R9300 groupset would work with this freehub. The rumor coverage genuinely conflicts. Some analysis claims 13-speed would require a new freehub, chain and chainrings; other reporting expects the new wheels to be forward-compatible precisely because Shimano designed them with the next generation already in hand. Shimano has confirmed nothing, and its "future compatibility" comment about E-Tube refers to software, not freehub splines. Treat 13-speed compatibility as an open question.

So use this decision framework:

Buy the R9370 now if:

• You run a 12-speed Shimano drivetrain (R9200/R8100) and plan to keep it for 2+ seasons — the wheels are not the bottleneck, and you get the benefit immediately
• Your current wheels are aluminum or two generations old — the jump is large and the value case against Roval/Zipp is strong
• You race or ride events in late 2026 where the weight and aero gains have real value

Wait if:

• You are planning a complete new R9300 superbike build — the safe money waits for Shimano to confirm the freehub standard, likely at the groupset unveiling between late 2026 and mid-2027
• Your current wheels are R9270 — a 159–220 g saving is a luxury, not a need, and a possible freehub change is a real risk on a $2,970 purchase
• You will not ride enough before spring 2027 to enjoy them — September availability may slip regionally anyway

The worst case for a buy-now rider is mild. Even if R9300 turned out to require a new freehub, Shimano has historically sold freehub bodies separately, and a 12-speed R9370 wheelset would still serve every current Shimano and third-party 12-speed drivetrain on the used market. The worst case for a waiting rider is a year or more without the upgrade, for a groupset that may not retail until 2027. Weigh those asymmetries against your own timeline.

Frequently Asked Questions

Q: When will the Shimano Dura-Ace R9370 wheels be available? A: September 2026, in both OEM and aftermarket channels. Shimano has not confirmed a specific date within the month, and exact timing varies by region. Pre-ordering through a dealer is the safest route to a 2026 delivery.

Q: How much do the Dura-Ace R9370 wheels cost? A: Each road wheelset (C36, C50 or C60) costs $2,970 / £2,299.98 / €2,799, the same price at every depth. The C99 front TT wheel is $1,595 / £1,199.99 / €1,399, and the Rear Disc is $3,030 / £2,299.99 / €2,799.

Q: Are the R9370 wheels compatible with my current 12-speed Dura-Ace or Ultegra Di2? A: Yes. They use Shimano's current 12-speed Direct Engagement freehub with Center Lock disc mounts and standard 12×100 mm / 12×142 mm thru-axle spacing, so they work with Dura-Ace R9200 and Ultegra R8100 drivetrains out of the box.

Q: Are the new Dura-Ace wheels hookless? A: No. All R9370 rims are hooked and tubeless-compatible, with a 23 mm internal width optimized for 28–30 mm tires. Standard tire-pressure limits apply and any quality road tubeless or clincher tire in the right size works. There is no tubular version at any price.

Q: How much lighter are the R9370 wheels than the old R9270? A: Between 159 g and 220 g per wheelset, depending on depth. The C36 drops 180 g (to 1,170 g), the C50 drops 159 g (to 1,302 g) and the C60 drops 220 g (to 1,389 g), thanks mainly to Shimano's first carbon spokes on a Dura-Ace wheel.

Q: Does the R9370 launch mean a new Dura-Ace R9300 groupset is coming? A: Almost certainly. The wheels are the first products Shimano has officially numbered in the 9300 series, and Shimano's naming convention ties wheel numbers to groupset generations. A May 2024 patent, a March 2026 E-Tube app leak showing a 13th cog, and leaked PD-R9300 pedal codes all point the same way, but Shimano has announced nothing official.

Q: When will the Shimano 13-speed Dura-Ace R9300 be released? A: Unconfirmed. R9300 did not appear at the 2026 Tour de France, and the reporting so far points to an unveiling between late 2026 and mid-2027, with retail availability Q4 2026 at the earliest and possibly slipping into 2027. Press estimates put pricing around €5,000/$4,899. Treat that as speculation.

The Bottom Line

The WH-R9370 launch is the strongest wheel range Shimano has ever shipped: 150–220 g lighter, measurably more aero, finally built on carbon spokes, and priced below the Roval and Zipp wheelsets it now matches gram for gram. If you ride a current 12-speed Shimano drivetrain and your wheels are due an upgrade, the C50 at $2,970 is the new default answer in this category, with the C36 and C60 covering the specialists at either end.

The model number may end up mattering more than the wheels, though. The first official 9300-series product is now on sale, the patent and leak trail points in one direction, and the R9200 groupset turns five on 31 August. Whether R9300 arrives as a 13-speed, fully wireless flagship this winter or in 2027, the countdown is public now, and Shimano started it with a wheel launch. We will keep this analysis updated as the evidence firms up. Until then, the smart play is simple: upgrade your wheels if your current bike is keeping its drivetrain, and hold your groupset money until Shimano shows its hand.