Arrow Racing has been around for years on the Mountain bike and Downhill circuits in the Western States. The tires are tightly packed together in size and by use. Subtle differences between them make them ideal for finding the right tire depending on your conditions. The SRS (Slow Release) compound is so sticky that rocks fly off of the tire and in the faces of the competition behind. The same tire with out the SRS would be better for another type of condition. Take advantage of years of racing. Gus has put together a great selection of MTB/Downhill racing tires at great prices. Call us to find the right tire for your conditions.