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CMS 2V NPI Stage 2 Spring Kit - .550" lift

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Calculated at checkout

Product Description

Spring load at 1.57" 90lbs
Spring load at 1.040" 205lbs
Spring rate 210 lbs per inch
Coil bind 0.970"

Performance 550 lift beehive valve springs for the 2V Ford NPI and SVO heads only.  Drop in replacement, no machining necessary.  Fits stock retainers and seats.  Same as used on our ported heads.  Springs are surfaced treated for high durability.  Recommended valve spring for higher RPM N/A and boosted applications less than 20PSI.  Made in the USA.

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