Here is a list of manufactures that are supporting Judgement Day so far by being on site and/or giving away free products at the event:

aFe
AirDog
BD Diesel
Diablo Sport
Diamond Eye
Edge Products
H&S Performance
Husky Liners
Integrity Plus
MBRP
PPE
Ranchhand
Sinister
SCT
South Bend Clutch
Superchips
TS Performance