ZIPP 303 Firecrest Disc Clincher


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  • Description
  • Specifications
The 303 Firecrest Carbon Clincher Disc-brake wheelset 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
and Zipp’s groundbreaking Carbon Clincher technology, with its exceptional reliability, handling and aerodynamic performance with the added convenience of a clincher.

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 Carbon Clincher 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… cyclocross, gravel roads… lonely pave (or not) lanes… even urban assaults. Jeremy Powers (Rapha-Focus) and the Giant Factory Off-Road Team raced Zipp 303 Firecrest 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 provide 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 Carbon Clincher 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 providing 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.


Set Weight 1645g
Max recommended rider weight 250lbs

Front Wheel
Weight 760g
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

Rear Wheel
Weight 885g
Hub Used 177D
Hub Width 135mm
Rim Depth 45mm
Brake Track Width (center) 26.4mm
Max Width 28.5mm
Spokes Sapim® CX-Ray®
Spoke Count 24
Spoke Length Non-Drive 272mm
Spoke Pattern Non-Drive 2 cross
Spoke Pattern Drive 2 cross
Spoke Length Drive 270mm
Max Tire Pressure 125psi
Max Tire Pressure 8.62bars
11-speed compatible hub Yes
Track Adaptable No
Dimpled Surface Yes
Nipples Sapim® Secure Lock
External Nipples Yes
Thru Axle Compatible Yes
XD Driver Body Compatible Yes
Available technical data: