Ferrea NISS 350 SPR 25.19 18.3

NISSAN 350Z (2003 - 2008) SINGLE VALVE SPRINGS 
3.5L - V6 - DOHC 24 Valve (VQ35)
Type/Material/Application: Single Spring/Special Alloy - Turbo/ Endurance Application
Outside Diameter: 25.19 mm
Inside Diameter: 18.3 mm
Seat Pressure: 85 lbs @ 34 mm
Open Pressure: 155 lbs @ 24 mm
Rate Inch: 178 lbs
Coil Bind: 20.5 mm
Max Net Lift: 12.5 mm
This Spring to be used with Ferrea Lightweight Valves without recess tip and Ferrea Titanium Retainer # E11058 and Ferrea Spring Seat Locator # SL1048