Do I need to transfer my old rotor and caliper to this knuckle?

The knuckle comes loaded with the bearing and hub. Your existing rotor and caliper bracket bolt directly to this assembly — no transfer needed. Just pull the old knuckle, bolt the new one in place.

What tools do I need to install this?

Basic hand tools and a jack. You'll need to disconnect the control arms and tie rod, remove the axle nut, and unbolt the strut. No wheel bearing press required since the hub is already installed.

Is there a torque spec I should follow?

Refer to your vehicle service manual for the correct torque values on control arm bolts, tie rod end fasteners, and axle nut. Specifications vary and hitting the right torque is critical for suspension safety.