Introduced for the 2000 model year, this Yamaha utility ATV brought the long-running Big Bear name into the 400cc class. It arrived as a work-oriented, mid-size machine aimed at riders who wanted a practical four-wheeler for chores, trail use, and general recreation rather than a pure sport ATV. In Yamaha’s lineup, it sat in the brand’s utility family and was positioned as a dependable all-purpose model with the familiar Big Bear identity that had already become well known in North America.
The Big Bear 400’s life was a single continuous production run that began with its 2000 model-year debut and continued through the 2006 model year. Over that period Yamaha offered the nameplate in different configurations, including two-wheel-drive and four-wheel-drive versions, but it remained the same core model family rather than a separate revival or reintroduction. The machine evolved gradually over those years as Yamaha updated styling, equipment, and drivetrain details, while keeping its focus on accessible utility performance and everyday usability.
By the time Yamaha refreshed its ATV lineup for 2007, the Big Bear 400 no longer appeared among the brand’s current models, indicating the end of its original run. Enthusiasts often remember it as part of the era when Yamaha’s utility ATVs balanced straightforward mechanical character with broad market appeal. It was also one of the models that helped carry the Big Bear name from Yamaha’s earlier 350-class ATV heritage into the 400cc generation, giving the badge a new chapter before later utility models took over in the lineup.