X-99® is a high-performance bowstring material built with 80% SK99 Dyneema (highest quality) and 20% Vectran in a patented construction. Designed for compound bows and recurves, it delivers no creep, strong arrow speed, low fuzziness, and excellent abrasion resistance.
Key Features
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No creep for stable tune and consistent timing
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Good arrow speed
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Low fuzziness in use
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High abrasion resistance
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Patented construction
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Solid colours only
String Building Notes (Important)
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X-99 is a smaller diameter material and does not require as much tension as 452Xtra
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Over-tensioning can be detrimental—do not exceed 150 lbs recommended tension for X-99
Recommended Strand Count
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Compound bows: 26–28 strands
Yield (Waxed)
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Approx. 11,000 ft per lb (waxed)
Spool Sizes (Choose Variant)
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1/8 lb
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1/4 lb
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1 lb