Everyone likes to personalize their army, but not everyone wants to have to green stuff their own special torsos, helmets, or shoulder pads. That's where Forge World steps in with their upgrade kits. In this case, if you've got a White Scars force and you want to add a little flair to your bike-riding baddies, you can use these to make them more your own.
There's a set of new heads and new torsos. Then they got really creative, with a trio of sets of shoulder pads. Though the White Scars are known for their bikes, there aren't any leg sets where they are wearing chaps, unfortunately. Maybe later.