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  • Product description

    Control Over Chaos

    The 303 Firecrest Tubular Disc-brake wheelset, pro proven in cyclocross, is now even better and lighter. At the center of the wheelset  is Zipp’s 77/177D hubset, an innovation that results in improved stiffness, durability, simplicity and usability.

    The 77/177D hubset is the perfect compliment for the leading aerodynamics, ride quality, stability and rim strength of Zipp’s Firecrest rim technology. That means you get the unmatched performance of the 45mm-deep 303 Firecrest rim proven with victories multiple victories at Paris-Roubaix, the Tour of Flanders and pro cyclocross races. And when it’s time to scrub off speed or stop, you won’t have to tense up and ‘grab a handful.’ You have the consistency and power of disc brakes – precision modulation and stopping power is at your fingertips. On top of that, the revised 303 Firecrest Tubular Disc-brake wheelset is 35 grams lighter than its predecessor.

    You’re at the helm of a serious Speed Weapon that helps speed up and smooth out even the most chaotic courses. That’s true even when the conditions and terrain get crazy… in cyclocross… gravel roads… steep lonely lanes… or even urban assaults. Jeremy Powers (Rapha-Focus) and the Giant Factory Off-Road Team raced Zipp 303 Firecrest Tubular Disc-brake wheels with new 77/177D hubset to great success this season, including Power’s 2015 U.S. national championship victory.

    About the 77/177D hubset:

    • Bearing preload precision set – that means no pre-load adjustment is needed.
    • Improved bearing protection and sealant.
    • Includes newly designed quick-release skewers with a wider more ergonomic handle to give more leverage for opening and closing. When closed, lever contours neatly with the frame.

    Thru-axle compatible. Comes with thru-axle end caps that can be swapped by hand:

    •         Front: 12x100mm & 15x100mm
    •         Rear: 12x135mm & 12x142mm
    • Proprietary flange geometry and spoke hole attachment pattern with Sapim® CX-Ray® spokes to optimize torsional and lateral stiffness without sacrificing weight or robustness.
    • New distinctive hub graphics.
    • 17mm axle

    The 303 Firecrest Tubular Disc-brake wheelset comes with a standard 10/11 speed driver body for SRAM®/Shimano® or for Campagnolo®, allowing you to run a wide range of cassettes. For those looking for a wider gear range, or tackling especially extreme terrain, a SRAM XD driver body for 177D (sold separately) is easily installed to allow for more cassette options. A 1.85mm spacer is included with the XD driver body and is required for use on the 177D hub. XD driver body compatible with 11-speed cassettes only.

    About 303 Firecrest rim technology:

    In developing the original 303 wheelset, Zipp discovered that a wider rim increases lateral stiffness for sprinting and cornering while also giving greater vertical compliance for greater control, comfort and durability. That wider rim profile led us to develop our Firecrest technology, which revolutionized aerodynamic efficiency and stability for carbon wheels. The proprietary Firecrest rim shape optimizes the aerodynamic profile of the front half and – here’s the revolutionary part – the back half of the wheel. Firecrest moves the wheel’s center of pressure to be more in line with the steering axis for stability in even the stiffest crosswinds.

    The 303 Firecrest Tubular Disc-brake wheelset comes with two decal options, the stealthy Beyond Black or the distinctive Classic White decals. Both decal options feature black anodized hubs, black spokes and black nipples.

    Each wheel includes 2 sets of Zipp thru-axle end caps, 1 Zipp skewers, 1 rolls of Zipp rim tape 700c x 20mm and 1 Zipp valve extenders. Rear wheel includes 1.85mm spacer for use with 10-speed cassettes.


    Weight

    640g

    Hub Used

    77D

    Hub Width

    100mm

    Rim Depth

    45mm

    Brake Track Width (center)

    26.4mm

    Max Width

    28.5mm

    Spokes

    Sapim® CX-Ray®

    Spoke Count

    24

    Spoke Pattern

    2 cross

    Spoke Length Drive

    272mm

    Spoke Length Non-Drive

    270mm

    Max Tire Pressure

    125psi

    Max Tire Pressure

    8.62bars

    Track Adaptable

    No

    Dimpled Surface

    Yes

    Nipples

    Sapim® Secure Lock

    External Nipples

    Yes

    Thru Axle Compatible

    Yes

     


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