Does it fit every Polaris RZR PRO XP?

It is made for the PRO XP chassis. Check your exact model year and trim before ordering, since other RZR lines use different frames.

Do I need to weld it on?

No. It is a bolt-on kit with hardware included, so it installs with hand tools.

It reinforces the known flex points, which reduces the chance of cracks. It is preventive, not a guarantee against damage from hard impacts.

Yes. It is aimed at trucks running bigger tires or long-travel setups, where frame stress is higher.

The steel stiffener pieces and the mounting hardware. You supply the usual hand tools.

On a stock trail machine the gain is small. It makes more sense if you ride hard, jump, or run oversized tires.

At UTV Source, for $165.56, 20% under what the other stores charge, as of our latest check.

12 stores we checked sell it, including UTV Source, Wild Boar ATV Parts, SuperATV, MojoMotoSport.com, PureOffroad.com.

$165.56at UTV SourceChecked 6 h ago

20% under what the other stores charge

Compared across 12 stores. Prices are checked against each store and labelled with when.