You'll notice your Desert Stryker's bowstring has 2 rubber sleeves (one over the other) on each end of the string close to the cams. Underneath those sleeves are 2 large (red) nock sets. These nock sets were originally designed for locating nocking points on bow strings but manufacturers, a while back, found that by placing these at a certain point close to the cams, it actually increases arrow speed. A Desert Stryker's speed is increased by about 7 to 8 fps (at least that's what my chrono tells me) by installing these nock sets so if you make your own strings and are speed concious make sure you install those 2 nock sets in the same location as they were from the factory. You can cover them effectively with rubberized stretch tape that can be purchased from Lowe's or Home Depot. I added 2 nocks sets to each side for a total of 4 nock sets in order to match the total weight of the 2 nock sets and rubber sleeves used by the factory. My bow, with the arrow combination I'm shooting, is chronographed at 349 fps, just as it was with the factory string.
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