The SwissStop Flash Pro Yellow King compound feature a high performance compound for carbon wheels but can be used on aluminum rims too. They are design for excellent stopping power wet and dry with superior modulation and low pad wear rates. SwissStop uses decades of materials experience combined with rider feedback to produce the best pads possible. They are race proven with victories at the Olympic Games, World Championships, and many other professional races. SwissStop brake pads are a popular upgrade and fit Shimano and Sram cartridge brake pad holders.
I used these pads with my Campagnolo Hyperon (carbon clincher) wheelset and the chatter and erratic braking was just awful. Changed back to the Campagnolo 701-702 pads and used those with complete satisfaction. I'm using the same Campagnolo pads with my Reynolds KOM and Lightweight Obermayer's too.
Unless you do not like your carbon wheels never use the same brake pads on both. The aluminum wheels leave little flects on aluminum imbedded in your pads, Then when used on your carbon, it is like taking a wire brush to them.. It also voids you cabon wheels warrenty!!! Take the few minutes and switch the pads when you switch the wheels!!!
Pros: workwith carbon wheels
Cons: the cost
I am using these with a set of Reynolds DV3K clinchers & SRAM force calipers. Previously I was using stock Reynolds blue pads. Got them because I couldnt use the blue pads on my aluminum wheelset, SRAM S27, which have typical machined braking surfaces. On carbon, the yellows have more ultimate stopping power than the blue pads, but with much less modulation, i.e., theyre a bit grabby. The yellows also are much more prone to squeal than the blues, using an identical toe-in angle. On aluminum, the yellows are not impressive. They work, but since theyre primarily designed for carbon, they just work OK. Sort of like riding an entry level bike. Big big heads up, throw away the retention screws that come with the yellows. The heads strip like theyre made of butter when using a ball head wrench.