The jersey wore from the first game he played with the in 2011 sold at auction for $128,000.
Per TMZ Sports, the sale price is the highest ever for an NFL jersey.
Julian's Auctions was the official lister of the Kaepernick No. 7 jersey, but TMZ noted the winning bidder hasn't been revealed.
The 49ers selected Kaepernick in the second round (No. 36 overall) of the 2011 NFL draft. He played behind Alex Smith as a rookie, but did appear in three games. His first play was a handoff to Frank Gore in San Francisco's 24-23 win over the Philadelphia Eagles on Oct.