The BoonBoom Legend Bus (ブンブンレジェンドバス) is part of the BoonBoom Car Series from Bakuage Sentai Boonboomger (2024–2025, the 48th Super Sentai series). BoonBoom Cars are small collectible vehicles the Boonboomger team uses to summon their mecha and trigger sound effects. The "Legend Bus" sub-line pays homage to earlier Super Sentai series, each bus carrying the color scheme and emblem of a historic team. This Don Brothers version is dedicated to a crossover with Avataro Sentai Donbrothers (2022, 46th series) and is finished in the Donbrothers motif. Because neither Boonboomger nor Donbrothers was ever adapted into Power Rangers, this vehicle was never released as a Power Rangers toy — it is Japan-exclusive (US listings labeled "Power Rangers" are seller mislabels).

As a BoonBoom Car, the Legend Bus has no combat or transformation function of its own in the traditional mecha sense and is not a robot component. Its play value comes from interaction with the separately sold DX BoonBoom Changer (transformation device) or the DX BoonBoom Booster: the Changer recognizes each BoonBoom Car individually and plays back matching launch sequences, voice lines and combination announcements. On this edition the triggered sounds reference the Donbrothers theme, making the bus a collector and sound-trigger item rather than a mecha.

Made by Bandai (Japan) in 2024, mostly plastic (PVC/ABS). The Don Brothers version was not a regular retail item but a limited Premium Bandai release: as part of the Boonboomger × Donbrothers collaboration it was bundled with apparel (T-shirt, boxer shorts, and in one bundle a cushion), with pre-orders opening in May 2024 and delivery in summer 2024. The Legend Bus line includes several motif variants themed after past Sentai (among them Go-Onger, Gokaiger, Kyoryuger, ToQger, Kyuranger, Ryusoulger, Zenkaiger and a Boonboomger version), released variously through gashapon (GP series), candy toy (SG) and Premium Bandai; the Donbrothers edition is one of the Premium Bandai limited variants.