What model and year is frame number ak42a 100489 suzuki quad?

The frame number "AK42A 100489" indicates that the Suzuki quad is a part of the Suzuki LT-A series, specifically the LT-A400 model, commonly known as the Suzuki Eiger. This model was produced starting in the early 2000s, with the specific year often being around 2002-2004. To confirm the exact year, you may need to check additional details like the engine number or other identifiers.