Manley Nissan SR20DE/SR20DET Valve Spring and Retainer Kit (w/o Valve Locks)

We use UPS, FedEx, DHL, and USPS for deliveries. We are not responsible for any shipping problems and shall not be held liable for any "reasonable" delay beyond our advertised delivery time-frames. Shipment by Ground Courier can take up to 15 business days for delivery. Express Courier can take up to 3 business days for delivery. Shipping time frames are once the order has been processed. Due to high demand, order processing can take 5 to 7 business days.

Manley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these kits, featuring premium springs, retainers, designed to handle aggressive aftermarket camshafts.

• Includes matched Valve Springs, Retainers, and Locks (if part number ends in "K"). Spring Locators included in some applications.
• Includes 7 Machined Valve Locks manufactured from the premium quality heat treated steel
• Heat treated aerospace grade titanium retainers CNC machined to exacting tolerances
• Designed to handle aftermarket camshafts and up to 10,000 RPM

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