The Invincible Flemish Twist Bowstring

Invincible Flemish Twist Bowstring — Served Loops, Built to Last

Tired of bowstring loops wearing out? The Invincible Flemish Twist Bowstring adds protective serving around both loops for extra durability where strings commonly wear.

Each handwoven bowstring comes pre-stretched, pre-waxed, and fully served. Choose from B55, D97, or FF material options to match your bow’s requirements.

Our promise: If your Invincible bowstring breaks for any reason, we’ll replace it for free.

Bowstring Features

• Served loops: Powergrip loop serving adds protection at the bow’s string contact points.

• Extra-long center serving: A 10-inch Polygrip center serving provides additional coverage against wrist slap.

• Handwoven Flemish twist construction: Traditional craftsmanship for your traditional bow.

• Pre-stretched and pre-waxed: Prepared for installation and setup.

• Standard nock fit: Custom serving sizes are available upon request to fit your nocks.

• Custom loop sizes available: Standard loops measure 1.25 inches on the bottom and 1.75 inches on top.

How to Choose Your Bowstring Length

Order by actual bowstring length—not the AMO length marked on your bow.

The best way to find the correct length is to measure an existing string that fits and works well on your bow. Order that actual string length.

If you don’t have a suitable string to measure, use your bow’s AMO length as a starting point. This measurement is usually marked on the bow:

• Longbow: Subtract 3 inches from the AMO bow length.

• Recurve: Subtract 4 inches from the AMO bow length.

Example: For a 62-inch AMO recurve, the suggested starting string length is 58 inches. For a 62-inch AMO longbow, it is 59 inches.

These are starting guidelines; individual bows can vary. Follow your bow maker’s string length recommendation when available.

Bowstring Materials and Strand Counts

• B55: 12 strands

• D97: 14 strands

• FF: 16 strands

Fit Your Recurve, Longbow, or Traditional Bow

Available for recurve bows, longbows, self bows, and other traditional bows, including wood and fiberglass designs. Choose a string material approved for your particular bow.

Need help ordering? Let us know, and we'd be happy to help in choosing your string length, material, loop size, or nock fit.

Protect your loops. Shoot with confidence. Stay Shatterproof!