Blackheart Crossbow String 37 1/2 In. Killer Instinct Furious Pro 9.5

The Blackheart Crossbow String 37 1/2 In. Killer Instinct Furious Pro 9.5 is a precision replacement string engineered for serious hunters who demand reliability in the field. Built to exact specifications for the Killer Instinct Furious Pro 9.5 platform, this 37.5-inch string delivers the consistent performance required when every shot counts. Whether you're preparing for the upcoming season or maintaining your current setup, a quality replacement string is essential to maintaining crossbow accuracy and longevity.

Blackheart strings are manufactured using a precision blend of modern high-performance materials and time-honored construction techniques that have proven effective across countless hunting seasons. The GlideLock center serving technology significantly reduces friction at the critical contact point, enhancing overall durability and extending string life in demanding conditions. This design minimizes serving separation—a common failure point in field use—and eliminates the ridges that develop between serving strands, ensuring smooth nock seating and consistent arrow flight shot after shot. The result is a string that maintains peak performance through extended use, whether you're hunting in extreme cold, heat, or humidity.

Hunters running the Killer Instinct Furious Pro 9.5 will appreciate the exact-fit design that installs without modification or special tools. Replacement strings should be installed before the start of the season or immediately if you notice performance degradation, reduced velocity, or visible fraying. Proper string maintenance—including regular inspection and occasional cleaning—maximizes the lifespan of your investment and ensures your crossbow remains a reliable partner in the field season after season.