Product Description
Vance & Hines Raceshop Components High-Performance Hayabusa Valve Springs are designed with the latest advancements in valve spring technology. Our springs are nano-peened, polished and 100% inspected through load testing to ensure they exceed stringent quality standards, offering superior valve stability at high rpm range. They are the premium choice for your performance upgrade and are drop-in ready. No machining of heads is required.