Of course, Firecrest also revamped the wheel's stability with a 26.2mm brake track, giving it the handling of a box section rim without reducing it's aerodynamic advantages. Zipp also added the carbon clincher option to the 303 firecrest's arsenal for those who want the ease of use of a clincher tire without compromising strength or aerodynamics. ABLC™ dimpling ensures that the rim moves through the wind with the ease of a shark through water. Did we mention that the weight of the 303 is virtually unchanged at just 1,198gr (tubular) and 1,498gr (clincher)? In re-redesigning the 303 they created a serious do-it-all wheel, a wheel light enough to be an asset on climbs long or steep, fast enough to justify putting your nose in the wind, stable enough that you don't need to think twice before mounting them on race day and of such uncompromising integrity that you could train on them the whole year with no regrets.