Description
Valve spring selection directly impacts your engine’s ability to maintain precise valve timing under extreme RPM conditions. The Isky 1.534 springs deliver the stiffness and consistency required for high-revving applications, whether you’re building a competition engine or upgrading a performance platform. With a proven dual-spring design and substantial 475 lb/in spring rate, these springs resist valve float and maintain reliability across extended high-load scenarios.
- Dual spring damper design
- 475 lb/in spring rate
- 1.534 in outer diameter
- 1.160 in coil bind
- Set of 16 springs
- CNC tool room precision
- High-RPM rated
- MPN: 9905








