Description
652 SPECTRA Endless Loop Bowstring Features:
- Excellent choice for all modern recurve and longbows.
- BCY 3D end loop serving
- String is center-served and ready to shoot.
- Burnished.
- Pre-Waxed.
- Pre-Stretched.
- Low creep
- Soft shot feel
- Provides higher bow efficiency resulting in increased arrow speed.
Strand Count:
Recommended strand count for Spectra 652:
- 14 strands (20-26 lbs draw weight)
- 16 strands (27-34 lbs draw weight)
- 18 strands (35-42 lbs draw weight)
- 20 strands (43-48 lbs draw weight)
- 22 strands (49+ lbs draw weight)
Use these recommendations as a reference guidline when ordering.
End Loops:
- Recurve – 2″ top, 1.5″ bottom, 6″ long
- Longbow – 1.5″ top, 1″ bottom, 4″ long
Center Serving:
- Standard – 3″ below center to 4″ above center (7″ long)
- Barebow – 4″ below center to 7″ above center (11″ long)
- .014″: A smaller diameter, good for achieving a tight fit and often used with smaller nocks or when building up a serving.
- .018″: A popular choice, offering a good balance of durability and nock fit.
- .021″: Another popular choice, often used for a snugger fit with some nocks.
- .024″: A larger diameter, suitable for specific nocks or when a thicker serving is desired.
NOTE: Center serving diameter is contingent upon string count.
What is 652 SPECTRA string?
- 652 Spectra Bowstring Spectra bowstring by BCY Fibers is essentially the same material known as FastFlight® produced by Brownell. This material is designed for speed and power and is the choice of many recurve shooters worldwide.
- If you are unsure if your limbs are reinforced do not use this bowstring. Instead it is always recommended you use B-50 Dacron.








Keegan Parsons –
Great quality string.
I use this string with the optional cat wiskers and 11″ power grip center serving on my barebow. The string length is spot on to what I requested, there has been very little creep, and the servings are all still tight after lots of shooting and breaking down the bow.