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Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset
Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset
Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset
Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset
Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset
Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset
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Shimano WH-R8170 C50-TL Ultegra Carbon Disc Wheelset

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50mm Profile Meets Minimal Drag for Maximum Speed

Designed for high speed racing environments and modern road plus tire widths, the ULTEGRA WH-R8170 C50 TL wheelset shares the same all-carbon rim profile with its pricier DURA-ACE brethren but employs hub compatibility across both Shimano 12 and 11-speed cassettes.

For situations where aerodynamic performance takes top priority, the new ULTEGRA WH-R8170 C50 wheelset features an all-carbon, 21 mm internal, tubeless compatible rim and a super-fast cup and cone bearing hub that is compatible with both 12 and 11-speed cassettes.

With its focus on reduced drag and high stiffness, the WH-R8170-C50 wheelset is ideal for road racing. The high-profile rims make it possible to put more pressure into the corners, so that every bit of power is converted into forward momentum..

While a sophisticated D2 rim design and 50mm deep profile underline a focus on aerodynamic efficiency, the ultralight hubs keep weight to a minimum while greatly enhancing overall wheel stiffness.

The OPTBAL system emplys a 2:1 spoke ratio, resulting in twice as many spokes on the drivetrain side as on the opposite side. The technology counteracts the unbalanced tension caused by increasing cassette widths on the drive side. The OPTBAL construction balances out this spoke tension increasing the spoke lifetime and creating a much stiffer wheel overall.

The result is an extremely lightweight, ultra-stiff performance-driven road racing wheel.

The new Ultegra carbon disc wheel release consisting of the C36, C50, and C60 wheelsets was created to compliment Shimano's new 12-speed groupset but is conveniently reverse-compatible with Shimano's 11-speed as well, providing maximum flexibility across a wider range of drivetrains.


  • Tire type: tubeless clincher
  • Cross-section: symmetrical
  • External width: 28 mm / internal width: 21 mm
  • Profile height: 50 mm
  • Brake disc mount: Centerlock
  • Freewheel body: Shimano HG L / EV (11/12-speed)
  • Freehub type: Pawl
  • Bearing: cup and cone (polished, CBN coated)
  • Seals: contact sealings
  • Axle spacing: 12 x 100 mm / 12 x 142 mm (thru axle)
  • Aero spokes (Straightpull, double butted, bladed)
  • Spoke count: 24 (front + rear)
  • Front spoke pattern: double crossed
  • Rear spoke pattern: OPTBAL (left radial / right double crossed)
  • Rim construction: carbon fiber reinforced polymer (CFRP, painted)
  • Hubs, axles, quick releases: aluminium (anodized)
  • Spokes: stainless steel
  • Nipples: aluminium
  • 11 and 12-speed compatible
  • Compatibility: cassette: CS-R9200-12, CS-R8100-12, CS-R8000-11, CS-HG800-11
  • Weight: 1564g (wheelset)

    • FREE Cassette Installation - Order a cassette along with a wheelset and we can install the cassette for free. Cassette installation requires special tools that not all our customers have. The cassette will be professionally installed and torqued to spec. Just add "Please install cassette" to your order notes at checkout and we'll take care of you. Please Note: If our inventory allocation requires that we ship your wheels and cassette from different warehouses, we will not be able to offer this service.

      B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.

      Signature will be required when taking delivery of this product.



    Axles: Thru-Axle 


    Brake Compatibility: Centerlock Disc 


    Cassette Type: Shimano 11 


    Tire Compatibility: Clincher Tubeless Ready 


    Wheel Features: Disc Brake Compatible 

    Front Wheel - 12x100, Centerlock

    Mfg PartNum: EWHR8170C50LFED 

    Rear Wheel - Shimano 11/12 sp - 12x142, Centerlock

    Mfg PartNum: EWHR8170C50LRED 

    Pair - 11/12 speed - 12x100/12x142, Centerlock

    Internal Rim Width: 21 mm

    Mfg PartNum: EWHR8170C50LFERED 


    Ordered by Most Relevant First
    5 stars
    4 stars
    3 stars
    2 stars
    1 stars
    Fastest wheelset to date!
    by SJV
    Cycling Enthusiast
    Northern Wisconsin
    1 of 1 customers found this review helpful.

    I have a variety of wheelsets I ride including Dura Ace C50 Tubulars but this is one is the best. Set-up with 25mm Continental Grand Prix 5000 TT TR tires tubeless (without sealant they holds pressure abut 4 hours) they are by far the fastest in my riding group. Highly recommended in my experience.

    Reviewed 10/6/2023
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    Shimano does it again, An amazing wheelset.
    by MadfiberRider
    Competitive Racer
    3 of 3 customers found this review helpful.

    What an amazing set of wheels! They are so much fun to ride beause of two factors; one a big surprise.

    These are fast as expected for a 50mm wheel and similar to my old WH-7850, also 50mm. BUT these wheels have such great cross-wind control. I can ride with no hands again! A big surprise was how well these wheels corner! They inspire such confidence! They remind me of those stiff Mavic Ksyrium SL wheels with aliuminum spokes that were so good in a criterium. They are a bit firmer riding than most of my wheels: Roval C38, Ksyrium Elite UST Disc with a 22mm rim height, Shimano RS-770 with a 30mm rim height, and the dozens of rim brake Ksyriums I have used in 45 years of racing. BTW-C38s are Terrible in crosswinds, almost as bad as MadFiber wheels.

    Overall a very smooth but firm riding wheel.

    Reviewed 10/6/2023
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    great wheels at a reasonable price
    by Anonymous
    Cycling Enthusiast
    San Diego, CA
    3 of 3 customers found this review helpful.

    they're an absolutely phenomenal, unbelievable value.

    given they're supposed to have an identical rim profile to the dura-ace wheels used by world tour teams, i assume that the design is aerodynamically sound (this is my first carbon road wheelset, so saying they "feel fast" or stiff or whatever isn't really meaningful).

    being compatible with both 11 and 12 speed cassettes is great, aero spokes are a nice feature, and the weight is reasonable for the price.

    aesthetically, as someone who appreciates minimalism and doesn't like giant banner-like logos and branding, i love the subtle (in practice almost invisible, unless you're looking for it) logo on the wheels, and the very quiet hubs that don't sound like a kid put a baseball card in his spokes just to be loud.

    overall i'd say that at full price they're great wheels with decent value, but if you can get them at a discount then they're really fantastic.

    Reviewed 4/19/2023
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    Biggest improvement I've experience with a carbon wheel.
    by Anonymous
    Cycling Enthusiast
    5 of 5 customers found this review helpful.

    I was a bit skeptical about these wheels, glad I was wrong. Biggest difference I've experienced upgrading to carbon wheels on a bike. They immediately felt much lighter and faster, and for some reason, more comfortable with bumpy roads (this one may be placebo). Where it shines is at higher speeds, you feel more speed for the same power. Only downside I see is you can't upgrade the free hub to XD, AFAIK.

    Money well spent, very happy with purchase.

    Reviewed 9/5/2022
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