Steel Stem Extensions Showing all 2 results Default sorting Sort by popularity Sort by latest Sort by price: low to high Sort by price: high to low SX-906 – Valve stem extension up to 5′ long w/ 5-1/2″ ring – Zinc primer Request a Quote! SX-908 – Valve stem extension up to 5′ long w/ 7-1/2″ ring – Zinc primer Request a Quote!