Excellent midrange and top-end increase. Designed specifically for the Hot Rods stroker crank and piston kit 4143 and P3001. Uses stock valve springs and rockers. If you have a problem, we will take every step to assist you.The item "New Hot Cams Camshaft For Yamaha YFM 350 X Warrior 1987-2004 4049-2" is in sale since Wednesday, March 14, 2018. This item is in the category "eBay Motors\Parts & Accessories\ATV, Side-by-Side & UTV Parts & Accessories\Engines & Components". The seller is "total-power-parts" and is located in AR, CA, FL, IA, MA, MI, MN, OH, PA, TN. This item can be shipped worldwide.