This Xceldyne CV4 X2 XESM1325-275-A25 SUZUKI 450 STD EX Valve Seat Insert is a top-performing valve seat for dual sport motorcycles, scooters, street motorcycles, and off-road motorcycles. It is made of bronze alloy, a durable and reliable material that ensures long-lasting performance. This valve seat is designed to fit perfectly into your motorcycle's engine, providing a seamless and efficient breathing experience for your engine. In addition, this valve seat is a performance part that enhances your motorcycle's overall performance. It is easy to install and comes with a manufacturer part number of XESM1325-275-A25. This product is perfect for those who want to upgrade their motorcycle's valve train components and achieve a smoother and more powerful ride.