Zipp 303 Firecrest® Carbon Clincher Tubeless Disc 6-bolt Wheel

Knows no limits: the 303 Firecrest® Tubeless Disc wheel by Zipp

At the Paris-Roubaix 2010, the 303 achieved the seemingly unthinkable: It became the first carbon wheel to win on the difficult surface and dreaded cobbles known as the " Hell of the North" . Since that day, the 303 has set the standard for what is possible with a carbon wheel. It has shown the world that aerodynamic improvements do not necessarily have to come at the cost of reduced durability or increased weight. Now road bikes are able to go to places where they have never been to before; riders demand more from them and ride them harder than ever before. At the same time disc brakes are rewriting the rules of rim design. With its disc-specific tubeless rim, the 303 Firecrest® Carbon Clincher is now 21 mm wide on the inside and faster than ever before.

Specifications:

Application:

Road, Cyclocross

Wheel Size:

28"

Tyre Type:

clincher tyre

Number of Spokes:

24

Brake Type:

6-bolt disc

Tubeless System:

Tubeless Ready

Technical Information - Rim:

Type:

Zipp Firecrest Disc

Dimensions (ETRTO):

21-622

Inner Width:

21 mm

Outer Width:

29.9 mm

Depth:

45 mm

Valve Hole Diameter:

SV/Presta (6.5 mm)

Rim Material:

Carbon

Technical Information - Rear Hub:

Type:

Zipp 177D (Disc)

Over Locknut Dimension:

10 x 135 mm quick release, can be converted to 12 x 135 mm and 12 x 142 mm thru-axles

Axle Diameter:

17 mm

Bearings:

steel (61903)

Body Material:

Aluminium

Freehub Body Material:

Aluminium

Technical Information - Lacing:

Rear Lacing Pattern:

2-cross

Spoke Type:

Sapim CX-Ray / Aero

Spoke Size:

272 mm/270 mm (rear l/r)

Spoke Material:

stainless steel

Nipple Type:

Sapim secure-lock / external

Approved For:

Weight Limit:

113 kg total weight

Air Pressure (max.):

8.6 bars

Features:

• 45 mm rim depth for unbeatable aerodynamics
• designed for One-Day Classics, can be used everywhere
• the Firecrest rim is known for incredible handling and stability
• 177 hub with particularly high durability and improved bearing protection
• can be driven without inner tube at low tyre pressures
• can also be driven with an inner tube
• with matt white or matt black decor

Technology:

Firecrest®
Through the pioneering use of software to analyse numerical fluid mechanics and the power of a supercomputer, Zipp is able to understand exactly what makes wheels go fast. Zipp then tests the most promising rim shapes in the wind tunnel and on the road. This process led to the creation of Firecrest rim technology, which allows the wheel's airflow and centre of gravity to be controlled more effectively, resulting in better aerodynamics, better handling in crosswinds and an overall better cycling experience.

ABLC™
The revised ABLC (Aerodynamic Boundary Layer Control) design reduces drag through more and smaller swirls to provide unsurpassed stability and handling even in the strongest winds.

VCLC™
(Visco-Elastic Constrained Layer Control)
A technology in which a vibration-absorbing material is incorporated between the carbon layers in the rim area. Blows can be absorbed better and vibrations are reduced by up to 10%. This drastically reduces signs of fatigue on the rim. The muscles of the rider also tire much more slowly. The wheel also has significantly improved traction, as it does not bounce or stutter in curves, for example.

Models:

28" rear 10x135 SRAM XDR:

Freehub:

SRAM XDR

Gearing:

11-/12-speed

Note:

A 1.8 mm spacer is required to mount XD cassettes on an XDR freehub.

Manufacturer Numbers:

00.1918.332.019 (matt white), 00.1918.332.020 (matt black)

Only available to European & Russian customers.

Contents:

• 1 x Zipp 303 Firecrest Tubeless Disc wheel (rear wheel)
• 1 x Zipp Tangente quick releases
• 1 x Zipp rear 12 x 142 mm conversion kit
• 1 x Zipp rear 12 x 135 mm conversion kit
• 1 x rolls Zipp rim tape (applied)
• 1 x Zipp valve extenders
• 1 x Zipp valve tools