1.235 Dual Valve Springs (8pk)

The 1.235 Dual Valve Springs 8-pack (Part No. 625/626-8) is a high-performance valve spring set engineered for automotive engine builds requiring precise spring rate consistency and reliable coil bind characteristics. This eight-piece kit delivers the controlled spring force necessary for applications where dual spring configurations provide enhanced stability and reduced valve float across extended RPM ranges.

Each spring in this set features a 300 lb/in spring rate and a 0.940-inch coil bind specification, with a 1.235-inch outside diameter that conforms to standard valve spring installations. The dual-spring design minimizes harmonics and resonance that single-spring configurations can exhibit during rapid cycling, making this kit suitable for both street performance and track-oriented builds. The tight tolerance specifications ensure uniform load distribution across all eight units, critical for maintaining cylinder-to-cylinder consistency and preventing premature wear on valve seats and guides.

Builders and engine shops rely on dual-spring kits like this for applications where OEM single springs lack the necessary progressive rate or where increased valve lift demands enhanced control. The 300 lb/in rate suits mid-range performance builds that require lift between mild street and aggressive race specifications. This eight-pack provides a complete set for four-cylinder engines or allows flexibility for mixed configurations and testing protocols on multi-cylinder platforms.

Verification of fitment to your specific engine block, cylinder head, and valve train components is essential before purchase. Consult your engine builder, technical documentation, or contact TacticalSurplusUSA directly if you need clarification on compatibility with your particular application.