BlackHeart 37″ Crossbow String for Killer Instinct Crossbows

Keep your Killer Instinct crossbow performing at its best with the BlackHeart 37-Inch Crossbow String — a premium replacement string engineered for precision, durability, and consistency. Crafted using a refined blend of modern materials and time-honored bowstring techniques, this string is purpose-built to meet the demands of serious crossbow hunters and competitive shooters alike.

The BlackHeart string features GlideLock center serving, an advanced serving system that enhances overall durability, reduces friction, minimizes serving separation, and virtually eliminates the ridges between serving strands. The result is a smoother, more consistent nock engagement with every shot. The DuraWeave construction process pre-stretches each strand before assembly, ensuring highly consistent string length and reliable performance shot after shot. Every string is meticulously hand-crafted to fit your crossbow with precision.

Whether you’re preparing for hunting season or fine-tuning your competitive rig, the BlackHeart 37″ Crossbow String for Killer Instinct crossbows is a dependable upgrade or replacement that won’t let you down in the field.

Order online today and enjoy fast shipping, or stop by Deep Roots Rifle Co in Eustis, Florida, where our knowledgeable staff can help you find exactly what you need for your crossbow setup.