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3.9 MCD Pigtail Spring Helix

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Endless Innovations, Inc. "NEW" MCD pigtail spring helix. NASCAR APPROVED in the following series: Sprint Cup, Nationwide, Trucks, K&N.

This pigtail helix incorporates many adjustable features. First the pigtail location is adjustable in height, as well the landing area for the spring is also easily adjusted, with quick snap packers for quick at track testing adjustments for travel. This feature is unique only to our part. This feature is currently being evaluated by NASCAR as an item allowed for the race, and not just practice. Other sanctioning bodies currently allow this feature in racing and practice modes.


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