If you are looking for the most well tested and track proven springs available for your coyote engine the search is over. The other guys claim they have the best but only MMR can back it up with 3 National records and 1 World record including the first 6 second Coyote engine ever. This spring kit takes our Gen 1 spring kit to the next level with Camshaft lifts up to .600 and 10,000 RPM potential. Kit includes 32 Titanium retainers and 32 Beehive Style Super finished/shotpeened Springs. Tested by team MMR and used in the Worlds fastest and first 6 second coyote engine! Works with all Valves and valve locks. Cam Limiters or MMR phaser deletes recommended. Direct replacement and upgrade for Boss and std GT model. Designed and suitable for extreme racing such as Road racing and Ultra high RPM and HP Drag racing. For installation use MMR spring compressor PN#451564
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