Aeron Super Lite Race AL 27. 5 / 29 TPU Tube Super Light. Super Fast. Super Small. The Aeron Super Lite Race AL TPU tube is engineered for cross-country and trail riders seeking the perfect balance of puncture resistance and ultra-lightweight performance. Its highly elastic shell deforms under impact to provide extreme durability, while the featherweight design is up to 81% lighter than standard butyl tubes. This makes it a genuine race-day spare rather than a bulky backup. Featuring a premium aluminum Presta valve with a removable valve core, it is fully compatible with deep-section rim extensions. The Super Lite Race AL tube construction is made for maximum performance and ensures you make it across the finish line. Features TPU construction, 41g up to 81% lighter than a comparable butyl tubes for a meaningful reduction in weight Aluminum Presta valve, 42mm removable valve core supports valve extensions for deep-section rims; the 1/3 thread on the shaft ensures optimum grip for the pump head Protection Level 2: Race / Maximum Performance optimized for minimum weight and rolling resistance with puncture protection vs. standard butyl tubes Compatible with 27. 5" and 29" wheels, 1. 7-2. 5" tire widthoffering a wide range of options across both wheel sizes Ultra-compact pack size rolls down small enough to tuck in a jersey pocket or saddle bag without bulk Disc brake only not compatible with rim brake setups Specifications Valve Type Presta (Aluminum)Valve Length42mm Wheel Diameter27. 5" / 29"Compatible Tire Width1. 7-2. 5"Material TPU (Thermoplastic Polyurethane), Valve Shaft Material (Aluminum)Weight41g Intended Use XC, Trail | Aeron | Superlite Race Al 27. 5/29 Tpu Tube 27. 5/29X1. 7-2. 5, 42Mm | Polyurethane