Srixon XX10 Conforming. The Srixon XX10 driver was voted Golf World’s 'Longest Straightest Driver in the World' in 2004. From its very low centre of gravity for high launch angle and reduced spin, to its expanded high COR area for forgiveness, Srixon claimed the XXIO driver allowed both the high handicapper and the accomplished player to hit consistently long drives. Features a 350 cc titanium head and Autoturn centre of gravity placement which is designed to help deliver the face squarely at impact.