Manley NexTek Series 1.580 OD .832 ID .730 Lift Oval Track and Endurance Valve Springs - 221443-16

From drag strips to short track and endurance circuits, the Manley NexTek® series is engineered for serious racers. NexTek® springs resist pressure loss and valve-train degradation even in the most demanding race conditions. That means more consistent spring force deep into a run, reduced valve bounce, and improved overall stability for high-RPM performance. Built to outperform and outlast in real-world competition.

Features

• No degradation of spring pressure in the later stages of a race
• Specially processed premium-grade chrome silicon that is virtually free of impurities or surface irregularities
• Tested by leading engine builders and are confirmed to be the best performing valve springs on the market today

Specs

• Manley Valve Spring, SPRING-1.580 DOUBLE
• Product Market: Domestic
• Average Gram Weight: 150
• Product Type: Engine Valve Spring
• Valve Spring Outer Diameter: 1.580
• Valve Spring Inner Diameter: 0.832
• Valve Spring Quantity: 16
• Valve Spring Series: NexTek? Series
• Valve Spring Material: Chrome Silicon
• Valve Spring Type: Double
• Valve Spring Coil Bind Height: 1.170
• Valve Spring Rate: 535
• Valve Lift - Maximum: 0.730
• Installed Pressure and Height: 235 @ 1.950
• Open Pressure and Height: 610 @ 1.250
• Industry: Automotive
• Out of Stock Message: Call for Availability
• Title: Manley Valve Spring, SPRING-1.580 DOUBLE
• Prop 65 Yes/No: Yes
• Prop 65 (C, R or CR): CR
• Prop 65 - Short Label: Prop 65 Warning Label.JPG
• Engine Type: ICE