Overview: This is a pair of 2.9" Dual Stage Closed Cell Foams for Large Scale Rock Crawlers. Pro-Line is proud to introduce the newest and largest addition to our popular line of Rock Crawling Performance Foam Inserts: the all-new 2.9" Dual Stage Closed Cell Inner/Soft Outer Foam for SCX6®! Other than tires, these are the single biggest performance upgrade you can make to your crawler. Pro-Line's inner inserts are made from lightweight and waterproof Blue Closed Cell Foam while the outer is made from Soft Open Cell Foam. When combined they are perfectly sized for Pro-Line's 2.9" SCX6® Rock Crawling Tires such as the Hyrax XL (PRO1018614). The inner Closed Cell inserts are completely contoured to correctly match the shape of Pro-Line's tires for improved tire performance and appearance. The Soft outer foam provides maximum grip while maintaining a fully supported sidewall from the inner Closed Cell foam for maximum side-hilling performance. Pro-Line's new Dual Stage Closed Cell foams are extremely durable and will last through many rugged adventures. Get your own set of Pro-Line's new 2.9" Rock Crawling Dual Stage Closed Cell Foam Inserts today! PRO637600 | 2.9" Dual Stage Closed Cell Inner/Soft Outer Large Scale Rock Crawling Foam Inserts (2) for Hyrax XL PRO1018614 Tires and other 2.9" SCX6® Tires Front or Rear Please note: All tires & wheels are sold in pairs, unless otherwise noted.   Features: Dual Stage for Incredible Grip and Sidewall Support Contoured to Perfectly match Pro-Line's 2