Russel Blackford (41), from Athol, was one of two riders killed in a crash south of Otautau in November 2018.
The other rider was Timothy James Meers (50), of Otautau.
Russel Blackford’s father, Barry Blackford, said while the motorcycle involved in the crash was still with the coroner, his son had another bike that was stored in Invercargill following his death.
"I wanted to bring it home to keep in memory of Russel.
"It wasn’t terribly expensive, but he added all these custom parts to it himself."
Recently, Mr Blackford made plans for the bike to be transported back to him in the Waikato, but it went missing before it could be sent.
"It’s been a trying time for the whole family.
"The bike in the crash was totally annihilated, but the one that’s gone missing we were going to bring home."
Police are appealing for any information on the whereabouts of the 1998 Harley-Davidson 98 Sportster Custom 120 motorcycle, with the registration A4SAG.
Mr Blackford said he was worried it had been sold or stripped into parts and would not be found.
- Police 105, Crimestoppers 0800555-111.
