This MBRP exhaust system is great for off - road enthusiasts who love spending time on the trails. Whether you're a casual rider or a more serious ATV fan, it's the perfect addition to your Yamaha YFM600FW Grizzly 4x4 from 1998 - 2001. It bolts on quickly and gives your ATV a deep, satisfying sound. It has a clean look that will make your vehicle stand out. While specific size and weight details aren't given, you can expect it to be a well - crafted part that fits your ATV seamlessly and enhances your riding experience.