From the author's README on Thunderstore

South Park Decks, Wheels, Grip Tapes and Trucks. With new updated content!!

Included

12 decks
6 griptapes
6 wheel sets
3 truck sets

Mix and match the parts with your existing setup.

Installation

Install from the ReSkate launcher under MODS → BROWSE, enable the mod, and launch the game.

In game

Find the parts in the board customization menus for decks, griptape, wheels and trucks.

Credits

Pack assembled and tested in game by the uploader.
Built with ReSkate Studio.
UV reference templates credited to donajello.
South Park characters and branding belong to their respective rights holders. This is an unofficial fan-made pack.

Install South Park Complete Board Pack

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for South Park Complete Board Pack and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.