2000 400ex wont turn over, just clicks

Pretty sure I've done all this correctly.

Battery- 13ish volts.

13 volts from Neg on battery to hot side of solenoid

13 volts across solenoid terminals when start button is pressed

13 volts from negative on battery to starter when start button is pushed

13 volts from main ground (frame end) to starter when start button is pushed

Nothing happens when solenoid terminals are jumped with key on. No sparks, nada.

Ran jumper cables from both sides of battery on one end to where the ground is connected and and to hot post of starter and nothing happens. No sparks, nada.

Is it the starter??
Thanks