Yokozuna inserts feature Scott/Mathauser Generation X compounds Legendary Scott/Mathauser brake shoes have been the standard in brake performance for decades Salmon color compound: feature an updated iron-oxide formula for superior stopping power in all conditions. Provide excellent braking without the abrasiveness of other severe condition brake pads Black color compound: features a softer Gen-X compound for great all-weather braking. Slightly less stopping power than the Salmon but has greater modulation