Assistant District Attorney Jennifer Selber says Smith blames his lawyer for the conviction a jury returned last month. The lawyer, Daniel Redrine, did not immediately return a call for comment.
The victim had gotten the bike a week earlier for his 16th birthday.
His sister, Yanessa Navarro, says Smith is a coward to have taken her brother's life over a toy.
The family describes Louis Navarro as a good student who hoped to become a mechanic.
