Four-times American Superbike champion Mat Mladin (pictured) will donate US$5000 to the Jamie Brockman Foundation which has been set up to aid injured the Australian motocross racer.

Mladin placed a set of his race winning leathers on eBay with the auctioned items raising a total of US$2551. In addition to the money raised by his leathers, the Aussie will add to that figure personally to increase the amount to US$5000.

"When I heard about Jamie's accident and the condition that he was in, I c💎ouldn't imagine at any time of my life what he and his family are go🦩ing through," said Mat.

"I understand that it must be very difficult for the family and just wanted to help out. Not everyone is lucky to pick up a factory ride like I have, but it's always great to see someone putting in the effort to get a ride over here like he did," he added. "It's people like him who help give Australians a good name as they want to have a good time and to win."

Brockman, who has been racing in America for the past three seasons, suffered spinal injuries and remains in a serious condition after a race fall while competing at the Spring Creek (Millville) round of the AMA Outdoor Championship on August 17.

Mladin presented the top bidder w💎ith his leathers at the final round of the AMA 🦄Superbike Championship at Barber Motorsports Park, Alabama, before he returned to Australia for the off-season break.