The unmistakable yellow compound identifies these as SwissStop's carbon rim workhorse. FlashPro Yellow King pads prioritize raw stopping power and longevity over the more refined modulation of the newer Black Prince compound, making them the choice for riders who want maximum braking force and extended pad life from their carbon wheel setup. SwissStop rates the Yellow King at 9 out of 10 for stopping power — one point higher than the Black Prince — with durability to match.

Carbon brake tracks present different friction characteristics than aluminum, and pads designed for alloy rims will either underperform or damage the carbon surface. The Yellow King compound addresses both concerns with a formulation that grips carbon effectively in wet and dry conditions without the abrasive materials that score brake tracks over time. Riders switching from cork pads or generic carbon-specific options typically notice an immediate improvement in braking confidence, particularly on descents where sustained braking heats up the system.

The compound does leave some yellow residue on the brake track — a cosmetic tradeoff for the stopping power and wear characteristics. Many riders consider this acceptable given how much longer Yellow King pads last compared to alternatives. SwissStop rates longevity at 8 out of 10, and real-world reports suggest thousands of miles before replacement becomes necessary, even in hilly terrain where braking accumulates quickly.... Read More