Creates higher load, higher RPM and more lift capacity than stock parts. Complete kit
includes (32) springs, (32) retainers, (32) seats, and (32) Seals.
- Increased valve control over stock springs (especially at high RPM) thanks to a performance-driven design and proven modular engine track record
- Fits 2011-2014 and 2015-Later
Ford Coyote and Boss 5.0L engines
| Max Lift |
Seat Load |
Open Load |
Rate |
Coil Bind |
Outer Diameter |
Inner Diameter |
| .600" |
120 lbs @ 1.57" |
275 lbs @ 1.02" |
258 lbs/in |
.970" |
Top 1.013" / Bottom 1.101" |
Top .650" / Bottom .738" |
Please note the above image does not show full spring kit.
