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Headers that form a leak can lose at least 15 hp per header side. And that's bad news when it comes to the performance factor. KRC Racing Allen lock stud header system kits include high-tensile studs, heat-treated nuts, and precision-locking washers to ensure that your headers are installed tightly and will not leak. Their special 12-point double hex socket has 12 driving points for easier hex key engagement. With their special vibration-free nut, you're able to tighten your header in more positions than you could with an open-end wrench.
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$105.99
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