Will these bolt directly to my suspension or do I need an adapter?

These mount at factory suspension pickup points with no modifications required. You'll need standard hand tools and a jack; no adapters or drilling involved.

Do these come with the bolts and fasteners I need to install them?

Hardware is not included with the assembly itself. Source replacement bolts and fasteners from your vehicle's service manual or parts supplier to ensure correct grade and torque spec.

Can I reuse my old wheel speed sensors or do I need new ones?

These assemblies do not include wheel speed sensors. If your vehicle uses ABS, inspect your existing sensors before installation; if damaged, source replacements separately.