100% S3 - Bastille (Blue Mirror Photochromic) Colour:Bastille (Blue Mirror Photochromic Lens) Zipp’s 303 Firecrest® Tubeless Disc-brake

Zipp’s 303 Firecrest® Tubeless Disc-brake wheelset is designed for the real world… a world of imperfect conditions

44mm and 55mm models

Engineered 133gsm fabric

135mm and 410mm chainstay length

Use your rear 12mm thru-axle equipped road bike on Giant's Cyclotron indoor trainers and prevent damage to your wheels with the 12mm Road Thru Axle Turbo Skewer

100% S3 - Bastille (Blue Mirror Photochromic) Colour:Bastille (Blue Mirror Photochromic Lens) Zipp’s 303 Firecrest® Tubeless Disc-brakeThe S3 combines standout features from two renowned performance favorites, borrowing the understated brow from the S2 and the definitive intake vents from our iconic Speedcraft. The S3 gives riders a subtly softened angularity while retaining the definitive look of unwavering power, ensuring all knowits about giving it 100%. Specifications Designed in California; made in Italy 5. 5 base cylindrical shield lens for increased peripheral view and