Prefletched and Bare Shaft Carbon Arrows

TX-5, TX-23, and Mach XV hunting carbon, 5mm / .204. Bare shafts or TX-5 prefletched, dozen or half-dozen. Spines 250–400. For wrap, helical, and cut length on the same order, build the dozen in the 3D custom arrow builder.

TitleX GPI by model and spine

Spine is how much a carbon shaft bends when you shoot it. TitleX rates that as 250, 300, 350, and 400 — a lower number is stiffer. Use this chart to pick a starting spine for TX-5, TX-23, or Mach XV, then confirm tune with field points and the broadhead you hunt with.

These values match the published TitleX shaft pages and the 3D custom arrow builder. They are shaft mass only — inserts, points, nocks, vanes, and wraps add more.

Spine TX-5 GPI TX-23 GPI Mach XV GPI
250 11.2 8.1 9.7
300 10.2 7.8 8.8
350 9.2 7.2 7.9
400 8.4 6.8 7.0

TX-5 is the heaviest 5mm hunting shaft in this set. Mach XV is the lighter 5mm option at the same spine. TX-23 is the lightest GPI of the three. Same spine number does not mean the same finished arrow.

Full arrow spine chart guide · 3D custom arrow builder