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Zipp 303 Firecrest carbon disc rear wheel Tubeless freewheel standard graphic

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Item#
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Variants
Display mfg part numbers
Shimano/SRAM- 45680031 620.34€
MPN 00.1918.530.000
SRAM XDR- 45680032 860.50€
MPN 00.1918.530.001
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Effeciency equals Speed

Zipp’s 303 Firecrest® Tubeless Disc-brake wheels is designed for the real world… a world of imperfect conditions, road surfaces, and elements where the bottom line is simple. Efficiency = speed. It’s faster, lighter, and more capable over varied terrain - whether the surface is pavement in all its conditions or no pavement at all. Deeply rooted in Zipp’s drive to conquer the Spring Classics, the new 303 Firecrest is remade with a purpose-made approach for the demands of modern road bikes. When it comes to going fast on a bicycle, efficiency means reduced: Wind resistance, rolling resistance, rider fatigue, weight. The 303 Firecrest Tubeless Disc-brake was designed using real-world direct measurements (vs. primarily wind tunnel or computer simulation). The results were huge. Its rim is slightly more bulbous in design than its predecessor, with a 32mm outside width, a 25mm internal width, and a 40mm rim depth. The profile provides low drag and an improved transition between rim and tire, boosting aero efficiency on the road. The wide rim stance also features less tire deflection for reduced rolling resistance. The combination of the wider tire, increased tire volume, and lower tire pressure helps to reduce rider fatigue by smoothing out the ride over imperfect pavement and road conditions - the tire and wheel system absorbs the shaking, not the rider. At the center of the 303 Firecrest Tubeless Disc brake is a versatile and durable new hubset, the German-engineered ZR1 DB. This hubset features 66 points of engagement for quicker response. The 303 Firecrest Tubeless Disc-brake wheelset is for dedicated cyclists who aspire to the latest in technology. Its competitors… in races, against peers, or simply conquering personal limits. This is about becoming faster and matching your motivation to the most advanced technology.

Highlights

  • New Zipp graphics and cosmetic identity that scream speed
  • Versatile endurance wheelset for the modern road bike with tubeless and hookless rim profile
  • Lighter Weight than its predecessor, making it nimble and fast
  • Tubeless Made Easy, optimized tire bed sign allows for simple tool-free installation and removal with no need for an air compressor to seat the tire
  • Ultra-wide 25mm rim profile creates a better tire interface to be fast on or off the road
  • New 40mm rim depth makes a light and aero wheel in every situation
  • New ZR1 DB hub is engineered in Germany with better seal design for improved durability and quicker response with 66 points of engagement
  • Ships with 12mm front and rear end caps
  • Center locking rotor interface. Lockring is included with the wheels
  • XDR™ or SRAM/Shimano driver bodies - Campagnolo driver body sold separately

Specification

Specification 00.1918.530.000 00.1918.530.001
Suitable for Road Road
Type Rear wheel Rear wheel
Tire compatibility Clincher Clincher
Tubeless Ready yes yes
Tire size 28'' 28''
Brake compatibility Disc Disc
Rotor Center Lock Center Lock
Rim construction Carbon Carbon
Rim profile symmetrical symmetrical
Rim depth 40mm 40mm
Rim inside width 25mm 25mm
Surface Texture ABLC SawTooth ABLC SawTooth
Max. tire pressure Max. 5 Bar / 73 psi Max. 5 Bar / 73 psi
Spokes Sapim CX Ray Sapim CX Ray
Spokes count 24 24
Spokes pattern 2 Cross 2 Cross
Nipples Aluminium, Sapim Secure-Loc Aluminium, Sapim Secure-Loc
Axle type 12 x 142mm 12 x 142mm
Hub ZR1 Disc Brake, Aluminium ZR1 Disc Brake, Aluminium
Driver menachnism Pawls, 6 Pawls, 6
Bearings Cartridge Steel Cartridge Steel
Driver body Shimano/SRAM 11-speed SRAM XDR 12-speed
Driver body material Aluminium Aluminium
Weight ca. 749g ca. 739g
Max. system weight ca. 114 kg ca. 114 kg

Technologies

ABLC®
Revised ABLC® (Aerodynamic Boundary Layer Control) smooths airflow off the rim surface increasing the frequency of the vortex shedding, which creates smaller vortices, providing unmatched stability and control on even the windiest days.

Firecrest
Zipp`s proprietary Firecrest® rim rewrote the fundamentals of wheel making, resulting in improved aerodynamics, ride quality, wheel strength and stability in even the strongest of crosswinds. As a result, the entire Firecrest family of wheels - from the 202 to 808 Firecrest - makes a bigger difference in more ways than ever including being laced into the new 77/177 hubset.

Firecrest technology, with rims that maintain a near-constant width almost all the way to the spoke bed, is the first aero profile that effectively controls airflow around the back half of the wheel. By moving the center of pressure - the focal point of side forces on the rim - to its optimal location near the steering axis, Firecrest offers stable, predictable handling at every wind angle. As they discovered when developing the Zipp 303 to thrive under unforgiving conditions at the Spring Classics, a wider rim such as used in Firecrest wheels increases lateral stiffness for sprinting and cornering, yet offers greater vertical compliance for more control, comfort, and durability on rough surfaces.

Scope of delivery

  • 1 x Zipp 303 Firecrest Carbon 28'' Clincher Tubeless Disc road rear wheel (see item description for details)
  • incl. Center Lockring
  • incl. 12mm end caps front wheel / rear wheel
Zipp 303 Firecrest carbon disc rear wheel Tubeless Shimano/SRAM- freewheel   standard  graphic
Zipp 303 Firecrest carbon disc rear wheel Tubeless SRAM XDR- freewheel   standard  graphic

Über die Marke Zipp

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