Spine 300 Carbon Express Maxima Triad vs Spine 400 Carbon Express Maxima Triad: specs compared
Updated 05 September 2026.
10.9 GPI
Spine 300 Carbon Express Maxima Triad wins on grains per inch
On grains per inch, Spine 300 Carbon Express Maxima Triad leads: 10.9 GPI versus 9.2 GPI.
| Spec | Spine 300 Carbon Express Maxima Triad | Spine 400 Carbon Express Maxima Triad |
|---|---|---|
| Model | Carbon Express Maxima Triad XSD | Carbon Express Maxima Triad XSD |
| Brand | Carbon Express | Carbon Express |
| Spine | 300 | 400 |
| Outside diameter | .251 in OD | .240 in OD |
| Weight | 10.9 GPI | 9.2 GPI |
| Grains per inch | 10.9 GPI | 9.2 GPI |
| Inside diameter | .166 in | .166 in |
| Stock nock | micro (.166) nock | micro (.166) nock |
| Stock insert | Carbon Express In-Out insert (97 gr), spine-specific | Carbon Express In-Out insert (97 gr), spine-specific |
| Point thread | 8-32 | 8-32 |
| Straightness | +/-.002 in | +/-.002 in |
| Suits | a heavy draw of roughly 65 lb and up | a medium draw of roughly 45 to 65 lb |
Questions and answers
Which has the higher grains per inch, Spine 300 Carbon Express Maxima Triad or Spine 400 Carbon Express Maxima Triad?
On grains per inch, Spine 300 Carbon Express Maxima Triad leads: 10.9 GPI versus 9.2 GPI.
How do Spine 300 Carbon Express Maxima Triad and Spine 400 Carbon Express Maxima Triad compare?
On grains per inch, Spine 300 Carbon Express Maxima Triad leads: 10.9 GPI versus 9.2 GPI.