The Zipp 404 Firecrest® Track Tubular Bicycle Wheel takes Zipp’s already stiff
and aero track wheel, and -- well -- revolutionizes it. New for 2013, Zipp’s 404
track offering now features Zipp’s proprietary Firecrest rim shape. That means
triackies now benefit from the superior aerodynamics, stiffness and stability
that made the Firecrest shape a revolutionary technology out on the road.
Add 28 spokes with a two-cross rear lacing pattern and Zipp’s massively stiff
track hubset, and this Zipp 404 Firecrest Track Tubular Front Bicycle Wheel is
ready for all the sprint you've got.
Boundary Layer Control) - Advanced Boundary Layer Control (ABLC) refers to
the patented and instantly recognizable dimpled pattern found on most Zipp rims.
ABLC smoothes airflow across the rim's surface and is tailored to every model
from the 202 to the Sub9 disc. 2009 sees the third-generation of ABLC, with up
to 4 times more dimples than before.
Constrained Layer Control) - Visco-Elastic Constrained Layer Control (VCLC)
uses a vibration-absorbing material sandwiched between layers of rigid carbon
laminate in the rim. When the wheel receives an impact from the road, much of
the shock is absorbed by the VCLC system, delivering a 10% reduction in
- Carbon Bridge uses a Kevlar® thread in a co-axial helix stitch to bind sheets
of carbon to each other in Zipp’s tubular rims. Because Kevlar is 350% more
impact resistant than carbon, it can disperse shock more evenly throughout the
carbon laminate, making for a rim that is practically bulletproof. In
particular, Carbon Bridge reduces the vulnerability of the rim's tire bed, the
area most susceptible to damage from impact.
- Track Hub Front