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Shimano’s New Dura-Ace WH-R9370 Wheels Drop Weight, Add Carbon Spokes

DURA-ACE R9370 C50
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Shimano has a new Dura-Ace wheel lineup, and it is more than a depth change and fresh graphics. The new WH-R9370 series brings carbon spokes, wider rims, lower weights, and a dedicated time trial setup with a 99mm front wheel and rear disc.

The new Dura-Ace wheel lineup (All photos/Shimano)

New Shimano Dura-Ace Wheel Lineup

The lineup includes the WH-R9370-C36, C50, C60, C99 front wheel, and R9370 rear disc. Shimano says the wheels were developed with WorldTour riders and pro triathletes, including athletes from Alpecin-Premier Tech and Fenix-Premier Tech, along with Kat Matthews and Mathieu van der Poel. The lineup is fully tubeless (no tubulars) and embraces modern tire sizes.

DURA_ACE R9370 C60 F
Carbon spokes are at the heart of the weight reduction. These are the new super-aero profile spokes on the C99.

Hold The Weight 

The weight savings are the first thing that stands out. Compared with the previous Dura-Ace R9270 wheels, the new C36 drops from 1350g to 1170g, the C50 goes from 1461g to 1302g, and the C60 falls from 1609g to 1389g. That is 180g off the climbing wheelset, 159g from the all-rounder, and 220g from the deeper C60.

Micro spline, huh? Looks like we might be getting that 10T cog after all.

How’d they do that? A lot of that comes from the new spoke system. Shimano is using carbon spokes in two profiles: Aero at 4.0 x 1.1mm and Super Aero at 5.2 x 0.8mm. The C36, C50, and C60 use the Aero spokes, while the C99 front wheel gets 16 Super Aero spokes.

Shimano Gets Modern-ish

The rims also move with the current road tire trend. The C36, C50, and C60 all use a 23mm internal width and are built around 28-30c tires. Shimano says testing at 48km/h with 30c tires showed up to 2.7 watts less drag compared with the previous generation. The C50 and C60 also use front- and rear-specific external widths, with the C60 measuring 31.5mm wide up front and 32.3mm out back.

DURA-ACE R9370 C36 R

Cup & Cone Crew

Shimano is staying with cup-and-cone hubs, which is very Shimano, and won’t change. The update is that the new system gets replaceable bearing cups, improved waterproof sealing, and claimed lower friction. Shimano says its revised cup-and-cone setup showed 30 percent lower rotational torque than typical cartridge bearings in its own testing.

A Depth For Every Course 

The model split is simple. The C36 is the climbing wheel at 1170g. The C50 is the everyday race option at 1302g. The C60 is the deeper, stiffer aero wheelset at 1389g.

For time trial and triathlon, the C99 front wheel uses a 99mm rim depth and weighs 792g. The matching rear disc weighs 987g.

DURA-ACE R9370 C60

Dura-Ace WH-R9370 Wheels – Pricing & Availability

Pricing is the same for the three standard wheelsets: $2,970 for the C36, C50, or C60. The C99 front wheel is $1,595, and the rear disc is $3,030. 

Shimano says availability starts in September 2026.

DURA_ACE R9370

Is a new Dura-Ace groupset not far off?  The current Dura-Ace group lives in the R9200/R9270 world, so a new WH-R9370 wheel family naturally raises the question: are these wheels the first sign of a next-generation Dura-Ace group for 2027?

We’re all hoping so. If these wheels are any glimpse into the future of Dura-Ace, we should expect a lighter and more forward-thinking groupset. Fingers crossed we’ll see it soon! 

Bike.Shimano.com

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17 Comments
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Jaap
Jaap
20 days ago

Pretty cool that Shimano is sticking with the user serviceable cup&cone bearings and that they found a 30% decrease in resistance. But with the average bearing having about 0.4 watt of resistance, that feels really insignificant.

reality bites
reality bites
19 days ago
Reply to  Jaap

Well then try the latest Silca lube and save 7 watts, Jaap. A lighter wheel won’t make any difference at all.

Also the serviceability of the cup and cone and the assurance of a hooked rim mean nothing, NOTHING, I say!

Joe Bond
Joe Bond
20 days ago

Seems to be missing the important detail whether the rims are hooked, semi-hooked, or hookless.

Larry
Larry
20 days ago
Reply to  Joe Bond

They are hooked rims.

JohnnyS
JohnnyS
20 days ago
Reply to  Joe Bond

Can’t think Shimano going with anything but hook

Paul
Paul
18 days ago
Reply to  Joe Bond

Or internal width

David
David
17 days ago
Reply to  Paul

23mm

Larry
Larry
20 days ago

I wonder if Shimano manufactures the carbon spokes?

774
774
19 days ago
Reply to  Larry

The spokes are manufactured by VONOA, but they are customized specifically for these wheels.

B Byrge
B Byrge
20 days ago

Microspline on the disc wheel? So sizing the drivetrain down must be in the works.

Grillis
Grillis
19 days ago
Reply to  B Byrge

Per a more thorough review on another site, its not micro spline. It’s actually Shimano’s HG L2 freehub which works with Shimano 12-speed cassettes with an 11T cog

Kyle
Kyle
20 days ago

Find someone that loves you as much as Shimano loves cup and cone.

caspar
caspar
20 days ago

Microspline cassettes for DA ?

Bluefire
Bluefire
20 days ago
Reply to  caspar

That’s the HG-L2 driver pictured – kind of a Microspline/HG driver hybrid that’s specific to Dura-Ace cassettes.

Joe
Joe
18 days ago

They look great, but I will not buy a modern road wheel with anything less than a 25mm internal rim width.

JDeeUU
JDeeUU
17 days ago
Reply to  Joe

Agreed. 25 is the minimum. Already dated, which is a shame because Shimano hubs are really nice. C&C hubs are so smooth.

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