Manley Pro K-Series Dual Valve Springs for K20A/Z

Manley Pro K-Series Dual Valve Springs for K20A/Z

Manley Pro K-Series Valve Springs are engineered for drivers who demand the utmost performance from their vehicles. These valve springs are meticulously crafted from super clean alloy, ensuring remarkable durability even under the extreme conditions imposed by high lift camshafts. They function perfectly with Manley's Lightweight Titanium Retainers. If you're looking to purchase a full set of springs AND retainers, check MAP-26140K, listed here. Whether you're racing, tuning, or simply enjoy the sound of a high-performance engine, Manley valve springs provide dependable and robust improvements to your ride. With Manley’s attention to detail, each component is created with precision and the highest standards, tailored for optimal engine performance and longevity.

Optimized Specifications

• Quantity: 16 pieces
• Outer Dimension: 1.160"/0.870"
• Inner Dimension: 0.865"/0.660"
• Seat Pressure: 80 @ 1.590"
• Open Pressure: Varies from 249 @ 1.140" to 283 @ 1.050"
• Stock/Max Lift: Ranges from 0.450" to 0.540"
• Coil Bind: 1.000"
• Rate (lbs/in): 375