ZIPP 303 Firecrest Carbon Rear Wheel - Clincher - QR - SRAM XDR - black

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Description of ZIPP 303 Firecrest Carbon Rear Wheel - Clincher - QR - SRAM XDR - black

Zipp’s 303 Firecrest  rim-brake clincher rear wheel offers key innovations for performance-minded cyclists.

Zipp’s 303 Firecrest Tubeless rim-brake wheel is an all-around wheel for a new era of road riding. It’s rich in heritage yet loaded with innovations. It’s as adept in the mountains as it is on rolling hills, windswept farm lanes, or ferocious field sprints. At Zipp, they never rest on laurels. This wheelset features a 19mm internal width and is tubeless ready. That means you can run lower tire pressure for greater cornering grip and compliance with reduced rolling resistance without the risk the pinch flats. When it comes to pure speed, the 303 Firecrest Tubeless packs a serious punch. It’s lightweight with ABLC™ Sawtooth™ Technology, a complex dimpling pattern first developed for our top-level NSW wheel lineup. This technology helps to achieve the optimization of low aerodynamic drag and crosswind stability, which ZIPP calls AeroBalance™. Zipp’s ShowStopper™ textured braking surface delivers unrivaled rim braking performance in wet or dry conditions. At the center of the 303 Firecrest Tubeless rim-brake is a new versatile and durable hubset, the German-engineered ZR1.


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.

Features:

  • New Zipp graphics and cosmetic identity that scream speed 
  • Go-anywhere 45mm rim depth proven in the Spring Classics 
  • New ZR1 hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement 
  • Built with Sapim CX Sprint J-bend spokes 
  • Ships with QR end caps, quick release skewers
  • Tubeless ensuring secure performance even when ridden at lower tire pressures
  • Showstopper™ textured brake track delivers the best modulation and shortest stopping distances in wet and dry conditions. 




Included in delivery: rear wheel quick release
Weight supplement: manufacturer information

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Fact Sheet of ZIPP 303 Firecrest Carbon Rear Wheel - Clincher - QR - SRAM XDR - black

Product Name: ZIPP 303 Firecrest Carbon Rear Wheel - Clincher - QR - SRAM XDR - black
Manufacturer: ZIPP
Item Code: ZIP478545
activity: Bike
material: Carbon
usage bikesport: Road Bike, Competition
hubs: ZIPP ZR1
spokes: Sapim CX-Sprint
rims: UD Carbon
shifting system: 11-speed, 12-speed
brake type: Rim Brake
wheel size: 28" (29") (622mm)
axle standard: Quick Release
wheel/hub version: Rear Wheel (RW), RW 700-900g, Standard Wheel
freewheel body: XDR SRAM
braking system: Rim (Carbon)
tire type: Wire Bead Tire, Folding Tire, Tubeless Ready
spoke hole number: 24
tire pressure: 8.62bar
ETRTO: 19-622
inner profile width: 19mm
rim profile height: 45mm
weight limit: 113kg
nipples: Sapim Secure-Loc
Model year: 2021
Color: Black
weight: 842g
manufacturer item code: 00.1918.532.001
spoke hole number: 24
Manufacturer page: http://www.zipp.com
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