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Spine 260 Easton 5MM Axis vs Spine 300 Easton 5MM Axis: specs compared

Updated 05 September 2026.

11.5 GPI
Spine 260 Easton 5MM Axis wins on grains per inch

On grains per inch, Spine 260 Easton 5MM Axis leads: 11.5 GPI versus 10.7 GPI.

SpecSpine 260 Easton 5MM AxisSpine 300 Easton 5MM Axis
ModelEaston 5mm AxisEaston 5mm Axis
BrandEastonEaston
Spine260300
Weight11.5 GPI10.7 GPI
Grains per inch11.5 GPI10.7 GPI
Inside diameter.204 in.204 in
Stock nockEaston X nock (9 gr)Easton X nock (9 gr)
Stock insertEaston ST Axis HIT insert (16 gr)Easton ST Axis HIT insert (16 gr)
Point thread8-328-32
Straightness+/-.003 in+/-.003 in
Suitsa heavy draw of roughly 65 lb and upa heavy draw of roughly 65 lb and up

Questions and answers

Which has the higher grains per inch, Spine 260 Easton 5MM Axis or Spine 300 Easton 5MM Axis?

On grains per inch, Spine 260 Easton 5MM Axis leads: 11.5 GPI versus 10.7 GPI.

How do Spine 260 Easton 5MM Axis and Spine 300 Easton 5MM Axis compare?

On grains per inch, Spine 260 Easton 5MM Axis leads: 11.5 GPI versus 10.7 GPI.

Compared here

Easton 5mm Axis in a 260 spine: GPI, bore and nockEaston 5mm Axis in a 300 spine: GPI, bore and nock