This is a genuine Athena Valve Steam Seal Kit (part number P400010420150). If you're doing top-end work on your bike or ATV and need to replace the valve stem seals, this is the kit you want. Athena is a top-tier brand known for race-proven parts that meet or exceed factory specifications, used by pros in motocross, supercross, and more.
This specific kit fits a HUGE list of models. It's compatible with many KTM motorcycles (like the Supermoto, SX, XC series from various years), Polaris ATVs (like the 400 Xplorer), Aprilia bikes (like the RSV 1000, Pegaso), certain Honda models (like the XL 175), and even some BMW motorcycles (like the F 650). Always double-check the list in the description against your specific make, model, and year to ensure a perfect fit. Installing fresh, high-quality seals like these is key to maintaining performance and preventing oil consumption.
