If you're working on your Yamaha motorcycle and need this specific spacer, this is the genuine Yamaha part you're looking for. The part number 6E5-45987-01-00 has been replaced by the new number 63P-45987-00-00, but it's the same quality Yamaha component you'd expect. This isn't some aftermarket knockoff - it's the real deal made by Yamaha to their exact specifications. The package quantity is one spacer, so make sure you order however many you need for your specific repair or maintenance job. Having the right factory parts is crucial for proper fit and function, especially when you're dealing with precision components like spacers. Whether you're a professional mechanic or a DIY motorcycle enthusiast, using genuine Yamaha parts ensures everything goes together smoothly and works exactly as intended. The quality is consistent with what came on your bike originally, so you don't have to worry about compatibility issues or premature wear. Installation is straightforward if you're familiar with motorcycle mechanics, and having the correct spacer means your assembly will have the proper clearances and alignment. It's one of those small but important components that can make a big difference in how your bike performs and lasts. Keep your Yamaha running right with factory parts that you can trust to fit and function perfectly every time.