ZIPP 303 Firecrest Carbon Clincher Tubeless 6-Hole Disc Wheelset, Convertible includes- Quick Release, 12mm & 15mm Through Axle Caps
FW: 12/15x100mm / QR - Convertible includes- Quick Release, 12mm & 15mm Through Axle Caps
RW: 12x135/142mm / QR - 2017 - Matte Black - Convertible includes- Quick Release & 12x135/142mm Through Axle Caps
he ZIPP 303 Firecrest Carbon Clincher disc-brake wheelset is now able to be Tubeless. At the center of the wheelset is Zipp's 77/177D hubset, an innovation that results in improved stiffness, durability, simplicity and usability.
When it is 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. You also get the unmatched stability and aerodynamic efficiency of the pro-proven 45mm deep 303 Firecrest rim and the added convenience of clincher wheels.
The 303 Firecrest Disc-brake wheel set combines that innovative disc-brake-compatible technology with the credibility and heritage of one of Zipp's most acclaimed wheels, the 303.
Firecrest Technology
In developing the original 303 wheels, 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 ZIPP 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. All of that innovation along with the precision control of disc braking gives you a wheel that's as smooth as it is tough.
ABLC and VCLC
You'll also see the rim skin is embossed with lot's of dimples of different diameters in a pattern which forces the airflow to form thinner, turbulent boundary layers. This significantly reduces the interference drag. The turbulent layer also adheres to the wheel skin throughout an increased airflow angle of attack, resulting in significantly lower drag in cross-wind situations, which means you have even more control with the ABLC (Aerodynamic Boundary Layer Control) rim. ABLC increases handling performance by minimizing the low-pressure wake left behind the wheel, allowing for greater tire choice with fewer aerodynamic side effects than seen with other designs. Zipp's exclusive VCLC (Visco-Elastic Constrained Layer Control) technology dramatically reduces rider fatigue, particularly in the hands, arms, neck, and posterior - while greater control of the tire contact patch simultaneously improves cornering grip and minimizes rolling resistance.
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
Thru-axle compatible - comes with FW: 12x100mm, 15x100mm / RW: 12x142mm (X-12), 12x135mm thru-axle end caps that can be swapped by hand
proprietary flange geometry and spoke hole attachment pattern with Sapim® CX-Ray® spokes to optimize torsional and lateral stiffness without sacrificing weight or robustness
17mm internal axle
The ZIPP 303 firecrest disc clincher rear wheel features an 11-speed freehub for SRAM/Shimano.
Optionally for those looking for a wider gear range, or tackling especially extreme terrain, a SRAM XD 11-speed driver body for 177D can be easily installed to allow for more cassette options.
Material: Carbon
Weight: approx. 1645 gram (wheelset, manufacturer information)
approx. 0.760 Kilogram (front)
approx. 0.885 Kilogram (rear)
Rim height: 45mm
external/internal rim width: external: 26.04 mm (max width: 28.5 mm) / internal 21 mm
E.T.R.T.O.: 21-622
Spokes: SAPIM CX-Ray
Nipples: Brass Sapim Secure Lock
Spokes number: FW/RW: 24 zweifach-gekreuzt
Hub axle system: front: 100 mm / rear: 10x135 (quick release), 12x135 mm (thru axle) or 12x142 mm (X-12 thru axle)
Fitting type of tire: Clincher / Tubeless
Fitting tire dimension: 23 - 32mm
Maximum tire pressure: 125 psi (8,62 bar)
Purpose: Wettkampf, Cyclocross
hub: 77D / 177D
Fitting for shifting: SRAM/Shimano 10/11-speed
Max. permissible total weight
(rider + bike): 113 kg
Color: black carbon rim, black spokes, glossy black hub
Disc brake standard: 6 Holes
Included in delivery: wheelset incl. rim tapes, quick releases, FW: 12x100 / 15x100 mm endcaps, RW: 12x142 mm (X-12), 12x135 mm endcaps, valve extensions, RW: 10-speed spacer
