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Crossbow
DynaFLIGHT 97
DynaFLIGHT 97 Bowstring
The original high strength Dyneema® bowstring - 100% SK 75; very durable, low creep. A standard for many crossbows. Available in solid colors.

Recommended strands: 26-28
Approx ft/lb waxed: 6700
Spool sizes: 1 lb, 1/4 lb, 1/8 lb
Force10
Force 10 Crossbow Bowstring
The world's strongest crossbow bowstring. Made from the very latest and strongest Dyneema®: SK78. (For older crossbows, B55 is recommended).
Strong: The toughest possible individual strand - even tougher than DynaFlight 97
Safe: Withstands the powerful release of a crossbow
Durable: Long life and good abrasion resistance
Stable: Low creep, even in the hottest weather
Available in solid colors.

Recommended strands: 26-28
Approx ft/lb waxed: 6300
Spool sizes: 1 lb, 1/4 lb, 1/8 lb
652 Spectra
B55 Bowstring
100% polyester similar to Dacron but with better durability and very low stretch. Available in solid colors.

Recommended strands: 12-16 for recurves
22-26 for older crossbows
Approx ft/lb waxed: 4300
Spool sizes: 1 lb, 1/4 lb

Crossbow Center Serving
Braided Spectra; tough and very durable. Black and Brown are standard. Other colors available.

Approx. breaking strength / diam: 175 lbs/.030"
Approx ft/lb : 2800
Spool sizes: 1 lb, 1/4 lb. 45 yd. jig

030 Diameter Halo Center Serving 030" Diameter Halo Center Serving
Smoother finish, braided Spectra. See available colors.

Approx. breaking strength / diam: 215 lbs/.030"
Approx ft/lb : 2,850
Spool sizes: 1 lb, 1/4 lb. 40 yd. jig

  Crossbow End Serving
3D Recommended. 3 ply Spectra See available colors

Approx. breaking strength: 60 lbs/.016" diameter
Approx ft/lb : 9500
Spool sizes: 1 lb, 1/4 lb. 120 yd. jig
(2S can also be used)

  Crossbow 'Cocking' Cord
750 lb. test braided Spectra. Black or brown stocked. some other colors available.

Spool sizes: 100 ft.


Colors available (for all materials): A full range of colors is available - please see our Bowstring Color Chart.

Bowstring Specifications: We show the approximate ft/lb. so stringmakers can get an idea of how many finished strings can be built from a spool. Due to variables in the manufacturing process, we cannot guarantee exact specifications.

Breaking Strengths: We no longer publish breaking strengths because discrepancies occur, due to different test methods. We will provide minimum breaking strength information upon request. It should be noted that all modern materials far exceed the strength required to perform satisfactorily as a bowstring material.

Bowstring Diameter / Recommended number of strands: All bowstring material is relatively flat in a single strand, so it is not appropriate to publish a diameter of the individual strand. The important issue is how many strands are required to give a satisfactory nock fit, which is what the above recommendations show. These numbers can vary according to nock type / size and personal preference. Recommended strands are for typical modern compound bows. Plus or minus two strands is normal. Recursive bows normally use two fewer strands.
BCY manufactures and supplies products in accordance with these specifications. If used correctly, the material will serve the purpose for which it was intended - a bowstring or as a serving material. All products we manufacture are extensively tested. We offer a full range of material for the archery market. There are many variables which can significantly effect performance of the bowstring material. Some examples include: Number of strands and/or of twists, type of serving material, tightness of serving material, width of cam grooves on bow, amount of lubrication, type of release, condition of cam wheel, yoke system on cables, degree of string maintenance. As BCY cannot control these variables, BCY cannot accept responsibility for problems arising from strings, cables or servings.

Dyneema is a registered trademark of DSM
Dacron is a registered trademark of Dupont
Fast Flight is a registered trademark of Brownell & Co.