HotCams 4049-2 cam Stage2 for Yamaha Raptor350 Warrior350 Bruin350 Wolverine350 Kodiak400 BigBear350 BigBear400 YFM350 YFM350R YFM350FW YFM400 YFM400F 1987-2006. P/N: 4049-2. Excellent midrange and top-end increase.