Shimano Dura-Ace 9100 C40 Carbon Road Wheelset – Clincher

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Shimano Dura-Ace 9100 C40 Carbon Road Wheelset - Clincher

Shimano's Dura-Ace 9100 C40 Carbon Road Clincher Wheelset brings an aesthetic update to pair perfectly with the new groupset and carries over the speedy stability we've come to expect from a Dura-Ace wheels. As with its C35 predecessor, the C40's weight is centered at the hubs to reduce rim and rotational weight so it kicks up to speed fast. Combine that snappiness with a 35mm rim depth and you get the ideal balance of lightweight responsiveness and aerodynamic speed to manage a wide variety of terrain. The rim's construction, which is ultimately responsible for the wheelset's devoted following, remains the same. It involves an alloy body that's extruded and machined to thin the walls down to an almost two-dimensional 0. 6mm wall thickness--about half of the typical alloy rim wall thickness of 1 to 1. 3mm. This obviously reduces weight to a minimum, but it also means the overall structure is less sound, so Shimano buttresses the rim with a jealously guarded carbon laminate process. The only information that the brand is willing to divulge about this process is that phosphoric acid is used to anodize the alloy, and then variable carbon layers are fused to it in order to boost its structural integrity without undoing the weight gains made all over the milling process. The result is a lightweight rim that's as durable and radially comfortable as alloy but still manages to approach the weight and drive stiffness of carbon. It also features an alloy brake track, which means it doesn't sacrifice stopping power in pursuit of weight reduction and also doesn't carry the risk of being distorted by internal pressure from the tube when it heats up all over long, hot descents. Altogether, each component of the wheel has been designed as a symbiotic system for the ultimate in aerodynamics, efficiency, and pure speed.

  • Rim Material: aluminum with carbon laminate
  • Wheel Size: 700c
  • Tire Type: clincher
  • Rim Depth: 35mm
  • Rim Width: [external] 20.8mm
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    About Us

    We get people who get outside - plain and simple. Backcountry began in 1996 with two guys and a stack of avalanche beacons in an apartment in Park City, Utah. Our roots were humble, but our vision was clear: to provide the best outdoor gear to connect people with their passions. Sometimes, even the path less traveled can feel well worn, so we make our own way. We owe it to ourselves and our customers to be innovative, to take risks, and to reach remarkable new territory.

    Today, we offer a broad selection of gear from premium outdoor brands, we back that gear with guaranteed returns, and our shipping is lightning-fast.

    We have deep roots in Utah, and we thrive on the trails and in the mountains surrounding Park City. Our corporate headquarters sits just north of old town Park City and within a quick pedal or a few footsteps of the Wasatch mountains.

    
    

    Returns

    100% Guaranteed Returns
    We guarantee your total satisfaction and offer a world-class returns policy. New, unused gear can be returned at any time for a full refund. Used gear must be returned within 30 days of delivery for credit.

    - New, unused gear must be returned in the condition you received it and with the original box and/or packaging, including manufacturer tags where applicable.
    - We will be able to not accept the return of gear, bikes, or bike frames damaged due to negligence or abuse.

    Please take the time to carefully package your returns. It is the responsibility of the customer to pay costs related to the repair of returned items damaged in shipping due to improper packaging.

    Returns Process
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    - Click into your Purchase History, find the item you'd like to return, and select Return This Item from the More Items dropdown.
    - You can be given the option to choose a reason for your return and space to fill in more details. Please provide as much detail about your return as conceivable.
    - After selecting a reason for your return and clicking continue You can be shown the original purchase price and shipping amount and the total amount of your refund.
    - Click Return This Item
    - Follow the Returns Shipping instructions below.

    Exchange Process
    Sometimes you wish to have to exchange an item for something else?it happens. Exchanges only require a few minutes.

    The fastest way to exchange a product is to return your original purchase using the eBay return process outlined above and place a new order for your preferred item at the same time.

    Immediately placing a new order ensures that You can get the new product quickly and that it won't go out of stock at the same time as you wait. Just use the eBay return process, return your original item, and place a new order.

    Returns Shipping

    With a USPS Label
    To make shipping a return even easier, eBay offers the option to print a USPS shipping label so you'll ship via First Class, Priority Mail, or Parcel Select options. These options are available for eligible U.S. customers returning products not required to ship freight.*

    You'll have the option to print a label on the final screen of the eBay returns process.

    Print your USPS label, tape it to the outside of your return package, and schedule a pickup or drop it off at any post office or USPS mail box.

    *Products required to ship freight may include: kayaks, SUP boards, cargo boxes, car racks, indoor cycles, and more.

    Without a USPS Label
    To return products without a USPS label:
    - File a return using Return This Item from your eBay Order History
    - Fill out the information requested on the sales receipt that arrived with your purchase. This receipt also serves as paperwork necessary for your return. Include the eBay Return Item Number (indicated on your Return Packing Slip, the final screen in the eBay return process) and drop the sales receipt in your return package.
    - Write the eBay Return Item Number on the outside of your package.
    - Ship your return to this address:
    Backcountry Returns Department
    2607 South 3200 West, Suite A
    West Valley City, UT 84119

    It takes 3-5 business days to process a return after it arrives at our distribution center. You can receive an email confirmation and confirmation through your eBay account when your return is received.

    Your card will be credited upon receipt of the returned merchandise.

    
    

    Shipping

    Shipping-Cost Breakdown

    Order Amount $0 to $49.99 $50 to $99.99 $100 or more
    Economy $5.95 FREE FREE
    Standard $7.95 $7.95 $7.95
    Two Days $14.95 $16.95 $19.95
    Next Day $24.95 $26.95 $29.95

    *Due to special handling requirements, the shipping cost for bikes and wheels is higher than the costs represented in this table.

    We provide free UPS Ground shipping on orders over $50. Sorry, some restrictions apply:

    - Excludes Bulky & Freight items (i.e. bikes, kayaks, & car racks)
    - No PO Boxes

    All Freight items including kayaks ship to business addresses and residential addresses in the lower 48 states. Freight shipping is NOT available to Alaska or Hawaii.

    - Expected delivery for freight items is 10-14 business days.

    For US shipments, we ship exclusively via UPS and OnTrac. We will be able to ship either to your home or office. In fact, most folks prefer having us ship to their office, as there's all the time someone there to accept it.

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