Manley Alcohol/Fuel Classes/ProMod NexTek Series High Performance Valve Springs - 221461-16

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

• Higher natural frequency and lower active mass provides improved valvetrain control and higher RPM potential
• Dual spring design reduces friction, which generates less heat and translates into greatly reduced load loss
• Extensively tested on the Spintron, dyno and race track (including blown nitro engines) and proven highly effective
• Smaller diameter, lightweight dual design allows engine to rev higher with improved valve train control
• Accepts smaller, lighter retainers which also promotes higher revs
• Ultra clean, high tensile strength chrome silicon material

Specs

• Manley Valve Spring, SPRING-1.540 DOUBLE
• Valve Spring Quantity: 16
• Valve Spring Series: NexTek? Series
• Valve Spring Material: Chrome Silicon
• Valve Spring Type: Double
• Valve Spring Coil Bind Height: 1.215
• Valve Spring Rate: 964
• Valve Lift - Maximum: 1.000
• Installed Pressure and Height: 425 @ 2.300
• Open Pressure and Height: 1389 @ 1.300
• Industry: Automotive
• Out of Stock Message: Call for Availability
• Title: Manley Valve Spring, SPRING-1.540 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
• Product Market: Domestic
• Average Gram Weight: 154
• Product Type: Engine Valve Spring
• Valve Spring Outer Diameter: 1.540
• Valve Spring Inner Diameter: 0.710