Ultradynamico ROSÉ JFF challenge The 303 Firecrest Tubeless Disc-brake

The 303 Firecrest Tubeless Disc-brake was designed using real-world direct measurements (vs

Protected SG2 gravel tires feature a 120tpi casing

making it a definitive choice for racers and performance-oriented riders

The Zipp Service Course SL-70 Ergo handlebar has a specially tuned drop shape to create comfortable hand positions with short reach to control levers vital for race situations

Ultradynamico ROSÉ JFF challenge The 303 Firecrest Tubeless Disc-brakeThe ROS is the first offering and the mainstay of Ultradynamico's line. Double it up for optimal traction offroad or pair it with a CAVA in the rear to drift the corners a bit more. JFF means Just For Fun, but not ONLY for fun these tires are equally equipped for long days locked in the pain dungeon as they are for a Sunday tour of Portland's vegan doughnut shoppes. JFF is our most accessible offering; think of it as the industry standard in terms of