This one is pretty cool, for each referral you get, you get an entry for the grand prize plus other prizes.

Enter here to win a trip for two to Sema Nov 6-8 with Al Unser Jr. After you enter grab your referral link and refer other people to the sweepstakes.

Refer 5 people – Get a free Pulstar Hat ($6.95 value)

Refer 10 people – Get a free Pulstar Fender Gripper ($40.00 value)

Refer 25 people – Get a free set of Pulstar Plugs (up to 10) ($160.00 value)

Refer 50+ people – Get a free Pulstar Pit Crew Shirt ($35.00 value)

The program ends September 30th!