The Rocket Bombs Version X (ロケットボム バージョンイクス, Roketto Bomu: 'Bājon Ikusu) is a Vongola Gear-enhanced version attack of Gokudera's original technique, Rocket Bombs. The difference between the two is that the dynamites are propelled by Storm Flames rather than gunpowder. The upgraded dynamite has also gained homing abilities and ridges that catch air during flight. The spiraling caused by the ridges increases the speed and the power of the dynamite.