Zipp - 202 Firecrest Tubular 6-Hole 12x135 142mm QR
Note: Delivery includes the wheel without brake disc only. Other products shown serve solely illustrative purposes and will not be delivered.Light weight with massive gains in performance. That’s the story behind the Zipp® 202 Firecrest® Tubular Disc-brake. This is Zipps most durable carbon tubular rear wheel for the demands of today’s cyclocross racers and the emerging road-disc rider and racer.
While the original 202 Tubular is a pure climber’s wheel, the202 Firecrest Tubular Disc-brake is so much more . For starters, they´ve created a rim with improved impact resistance that’s also purpose-built for disc brakes. Without having to worry about creating a brake track, Zipps engineers were free to innovate the rim’s design to enhance stiffness, and aero performance while keeping weight low.
In developing the original 202 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. Firecrest rims have a near-constant width from the outer track to spoke bed to improve aerodynamics and better control airflow. ZIPP uses Computational Fluid Dynamics software analysis to maximize aerodynamics and minimize wind-produced torque.
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 177D hub
- 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 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 202 firecrest disc tubular rear wheel features an 11-speed freehub optionally available for SRAM/Shimano or Campagnolo.
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.