Product Description
If you’re turning the RPM up on your Hayabusa, these Vance & Hines valve springs are built to keep everything under control. Nano-peened, polished, and 100% load tested, they’re designed for serious performance and long-term durability. They’re drop-in ready, no head machining required.
Key Features:
- Nano-peened and polished
- 100% load tested
- Improved high-RPM valve stability
- Drop-in installation
- Available in 70 PSI or 90 PSI
A simple, proven upgrade when you’re building for power and reliability.


