Welcome to the IRD online store. This is the place to go if you cannot find our components in a local bicycle shop or online retailer. IRD prides itself with providing well-designed high-performance parts at reasonable prices. Yokozuna Reaction Housing in stock! More product information is available on our main site www.interlocracing.com and click on "Where To Buy" CAMPY 11 Cassettes now available in 12-30 and 11-30