BCY Product Manuals
Bowstring Material
452X Bowstring
67% SK75 Dyneema®, 33% Vectran. Good arrow speed. More strand counts flexibility and better-looking two-color strings. No creep; completely stable. Available in all colors.
Recommended strands:20-24 for Compound Bows
Approximate feet per pound waxed:8,800
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
X-99 Bowstring
80% SK99 Highest Quality Dyneema - 20% Vectran. All the benefits and performance of BCY-X. When compared to BCY-X, the smaller diameter of X-99 means more strands are needed for a finished Bowstring (+2/4). Good for Compound Bows and Recurves. Available in solid colors.
No Creep; Good Arrow Speed; Low fuzziness; High abrasion resistance; Patented Construction
Recommended strands:26-28 for Compound Bows
Approximate feet per pound waxed:11,000
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
Mercury Bowstring
Made 100% from the #1 quality Dyneema fiber - SK99
Low Creep; Smaller diameter for a smoother, rounder string; Higher strength, high durability. Available in solid colors.
Recommended strands:32-34 for compounds, 2 or 4 less for recurves
Approximate feet per pound waxed:13,000
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
DynaFLIGHT 97 Bowstring
The original high strength Dyneema®bowstring - 100% SK 75; very durable, low creep. Used for Crossbows, Compounds, Recurves, and Youth Bows. Available in solid colors.
Recommended strands:14-16
Approximate feet per pound waxed:6,700
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
652 Spectra Bowstring
Spectra bowstring, same as the original Fast FlightTM- still the choice of many recurve shooters worldwide. Available in solid colors.
Recommended strands:18-22
Approximate feet per pound waxed:8,200
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
8125® Bowstring
100% SK75 Dyneema®fiber. Highest speed and higher durability; preferred by some compound shooters - particularly 3D. Also, the choice of Olympic-style recurves shooters worldwide. Available in all colors.
Recommended strands:18-22
Approximate feet per pound waxed:8,200
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
450 Plus Bowstring
The original Dyneema®/ Vectran blend. No creep; expect consistency and no peep rotation. A good option for compound cables. Available in some solid colors.
Recommended strands:12
Approximate feet per pound waxed:4,500
Spool sizes:1/4 lb., or 1 lb.
B55 Bowstring
100% polyester similar to Dacron but with better durability and very low stretch. Primarily used for recurves, but also used on older compound crossbows and traditional bows without reinforced limb tips. Available in solid colors.
Recommended strands:12-16 for recurves
Approximate feet per pound waxed:4,300
Spool sizes:1/4 lb., or 1 lb.
Crossbow Material
Mercury 2 Bowstring
A larger version of the popular Mercury material, made from the highest Strength Dyneema®. Very low creep, for use in Crossbows and some compounds, as an alternate for Force 10. Available in solid colors.
Approximate feet per pound waxed:6,550
Spool sizes:1/8 lb., 1/4 lb., or 1 lb.
Crossbow Center Serving
Braided Spectra; tough and very durable. Black and Brown are standard and stocked. Other colors available: Fluorescent Green, Fluorescent Orange, Red, White.
Approximate breaking strength:175 lbs.
Diameter:.030"
Approximate feet per pound:2,800
Spool sizes:1/4 lb., 1 lb., or 45 yard jig
030" Diameter Halo Center Serving
Smoother finish, braided Spectra.
Approximate breaking strength:21lbs.
Diameter:.030"
Approximate feet per pound:2,850
Spool sizes:1/4 lb., 1 lb., or 40 yard jig
Crossbow End Serving
3D Recommended. 3 ply Dyneema or Spectra.
Approximate breaking strength:60 lbs.
Diameter:.016"
Approximate feet per pound:9,500
Spool sizes:1/4 lb., 1 lb., or 120 yard jig
Crossbow 'Cocking' Cord
750 lb. test braided Spectra. Black or brown stocked. Other colors available: Fluorescent Green, Fluorescent Orange, Red, White.
Spool sizes:20 feet, 50 feet or 100 feet
Serving Material
Polygrip Center Serving
100% Polyester; grips very well. Black / white color. Very economical.
Polygrip Center Serving .020:
Approximate breaking strength:35 lbs.
Diameter:.020"
Approximate feet per pound:4,600
Spool sizes:1 lb., or 75 yard jig
Polygrip Center Serving .025:
Approximate breaking strength:50 lbs.
Diameter:.025"
Approximate feet per pound:3,600
Spool sizes:1 lb., or 60 yard jig
008 Spectra Serving Thread
Small diameter fits well in all main string and cam grooves. Tough and durable, grips well, available in black, white, fluorescent green, fluorescent orange, blue, red, tan, and pink. More economical due to twisted construction.
Approximate breaking strength:46 lbs
Diameter:.008"
Approximate feet per pound:18,000
Spool sizes:1/4 lb., 1 lb., 150 yard jig
2X End Serving
100% Dyneema®or Spectra - small diameter. Fits snugly into wheel tracks and covers areas on strings and cables needing protection from abrasion.
Approximate breaking strength:50 lbs
Diameter:.015"
Approximate feet per pound:14,200
Spool sizes:1/4 lb., 1 lb., or 150 yard jig