Manley Ford 4.6L/5.4L DOHC NexTek Series High Performance Valve Springs (4 valves per cylinder)
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.
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2005-2006 | Ford | GT | Base |
| 2007-2008 | Ford | Mustang | Shelby GT500 |
| 1999,2001 | Ford | Mustang | SVT Cobra |
| 2000 | Ford | Mustang | SVT Cobra R |