According to his brother, the organs from IndyCar Series Justin Wilson were donated to six different people.

Stefan Wilson revealed the news on Twitter on Tuesday, a day after his brother died from a head injury he sustained at Pocono Raceway on Sunday.

With #giftoflife @justin_wilson saved 6 lives today. He just keeps setting the bar higher. Keep Julia & the girls in your prayers #myherojw — Stefan Wilson (@stef_wilson) August 25, 2015

Wilson, 37, was hit in the helmet by debris from Sage Karam's car. Karam had crashed while leading and pieces of his car were strewn across the track. A bouncing piece of debris was in the path of Wilson's car and after impact, his car swerved to the left and hit the inside wall.

NASCAR Xfinity and Camping World Truck Series teams will run decals this weekend honoring Wilson (The Sprint Cup Series is off). Wilson's death was the first in the IndyCar Series since Dan Wheldon died in the final race of the 2011 season. Sunday's race at Sonoma is the final race of the 2015 season. With the offseason just a week away, there's plenty of time for conversations about what the series can do to increase protection for drivers' heads. Wilson was killed because his head was exposed with the IndyCar Series' open-cockpit design.

If you would like to be an organ donor, registration is simple. And you can help save muliple lives just like Wilson did. If you haven't signed up when renewing your driver's license, click your state on this map to begin the process.

- - - - - - -

Nick Bromberg is the editor of From The Marbles on Yahoo Sports. Have a tip? Email him at nickbromberg@yahoo.com or follow him on Twitter!

Follow @NickBromberg