One of the leading front and rear tubular bike wheels for 2012 is the redesigned 303 Firecrest from Zipp. Crafted with a 27.5mm-wide rim profile, the 303 Firecrest is amazingly tough. Moreover, by flexing, these wheels absorb bumps effectively.
Though already outstanding, the impact resistance of the Carbon Bridge technology used by Zipp on these wheels is even further enhanced. Also, it makes radial compliance very comfortable and lenient. Its wide rim tackles accelerations, sprinting, and cornering with an increased lateral stiffness.
Weighing in at only 1171g per wheelset, the 2012 Zipp 303 Firecrest Front and Rear Tubular Wheels are incredibly lightweight. Even when compared to the climbing wheels that compromise aerodynamics, durability, and ride quality to reduce weight, the 303 Firecrest is still lighter.