Juken Sentai Gekiranger vs. Boukenger (獣拳戦隊ゲキレンジャーＶＳボウケンジャー,Jūken Sentai Gekirenjā tai Bōkenjā?) is the teamup movie between Juken Sentai Gekiranger and GoGo Sentai Boukenger. The DVD was released on March 14, 2008, for rental and March 21, 2008, for purchase.
Dark Shadow's Shizuka of the Wind sneaks into SCRTC to steal a mysterious red jewel, leading to the Gekirangers confronting her. When BoukenBlack, BoukenYellow, and BoukenBlue appear, a battle among the two groups over the jewel occurs at Shizuka attempts to retreat until BoukenSilver retrieves from her. However, Satoru Akashi arrives and takes the jewel to his former teammates' dismay. Soon after, Master Xia Fu reveals that the red jewel in his possession is one of two that belonged to the Cosmic Kenpō Master Pachacamac (宇宙拳法の使い手パチャカマック, Uchū Kenpō no Tsukaite Pachakamakku?), who gave them to Bruce E after their lengthy 200 day battle. While this occurred, Sakura goes after the blue jewel in the Rin Jū Hall, and with Satoru, they battle Rio and Mele, who join them soon after to gain the power that the Cosmic Kenpō style offers. The Gekirangers and Boukengers head to South America where they race towards the Darkness Pathway ruins as Bouken Silver, Geki Violet, and Geki Chopper battle Rin Jū Hippotamus-Ken Bākā. But once at the top, after they're too late to stop the villains from getting to the Cosmic Kenpō's secrets, Akashi reveals that Sakura was actually possessed by Pachacamac's descendant, the evil Cosmic Kenpō Master Pachacamac XII (宇宙拳法の使い手パチャカマック１２世, Uchū Kenpō no Tsukaite Pachakamakku Jū Ni Sei?), who uses his power to turn Rio, Mere, and Bākā into his pawns. The Gekirangers and Boukengers team up to free Rio and Mere before all 13 stop Pachacamac XII in an epic battle on the moon.
Gekiranger vs. Boukenger was the last of fourteen crossover movies shown during the Super Sentai Versus Series Theater, a special event on TV Asahi during the run of Tensou Sentai Goseiger. As with the others, this movie was aired in two half-hour parts an hour before the week's episode of Goseiger, there was also commentary at the beginning and end by the Goseigers about the teams and the storylines within the movie.