Head Graphene XT Speed S, Prestrung 230635 - 230635A classic returns! The Graphene XT Speed S from a few seasons back is now available at a reduced price (was $189. 95) in a prestrung format, ready to head straight to the court! The Speed S is a midweight racquet with a solid feel that is well suited to players with an average to longer swing style. It offers a stable platform for baseliners with a spin friently makeup and just enough flex to give you the precise ball placement you are striving for.