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- CMS 4V Stage 2 Spring Kit - .500" lift
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- CMS 4V Stage 2 Spring Kit - .500" lift
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- CMS 4V Stage 2 Spring Kit - .500" lift
CMS 4V Stage 2 Spring Kit - .500" lift
![Pin It](http://pinterest.com/pin/create/button/?url=https://www.cushmanmotorsports.com/cms-4v-stage-2-spring-kit-500-lift/&media=https://cdn1.bigcommerce.com/server3400/r6ufwc/products/453/images/648/image__16896.1367003803.1280.1280.jpg?c=2&description=Cushman Motorsports - CMS 4V Stage 2 Spring Kit - .500" lift, $699.00 (https://www.cushmanmotorsports.com/cms-4v-stage-2-spring-kit-500-lift/))
Product Description
| Part Number | CMS-VS-4V-STG2 |
| Application | Ford 4.6L / 5.4L - Non GT500 B, C, 03 Cobra Mach 1, Navigator |
| Seat Pressure | 97lbs @ 1.480" |
| Open Pressure | 206lbs @ .980" |
| Spring Rate | 217 lbs / in |
| Coil Bind | .920" |
| Max Lift | .500" |
| Spring ID Top | .538" |
| Spring ID Bottom | .700" |
| Spring Weight (g) | 39.6g |
| Features | PAC RPM Processing, ID / OD Chamfer |
| Included Retainers | 4130 Chrome Moly - 7.3g |
PAC RPM Series Stage 2 4V Valve Springs
- Manufactured by PAC Racing
- Designed for N/A and Moderate Forced Induction Applications up to 20lbs of boost
- Endurance Heat Treatment and Surface Finishing for additional strength and reliability
- Lighter than any other spring offered for this application
- ID Chamfer Top and Bottom for consistent Retainer and Valve Seal / Seat fitment
- 97lbs Seat Pressure @ 1.480" Installed Height, 217 lbs/in. Rate, .920" Coil Bind
These Valve Springs are designed for use in 4.6L / 5.4L 4V B, C, 03/04 Cobra / Mach 1 and Navigator Cylinder Heads. They are supplied with 4130 Chrome Moly with a +.050" Design to raise the Installed Height from the typical 1.430" to 1.480".
