Riley Baker and his partner, Amy McCarthy, of Dunedin.

A motorcyclist killed in an Otago crash saved seven lives by donating his organs to people in need, his grieving partner says.

Riley Baker died in Dunedin Hospital two days after a car hit his motorcycle on State Highway 1, between Palmerston and Moeraki, about 4.30pm on Saturday.

His partner of two-and-a-half years, Amy McCarthy, 22, said "matches have been found for all of his organs, so he is going to seven different people".

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"I am pleased he can help other people."

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* Dunedin motorcyclist dies

* Motorcyclist critically injured

Baker had been riding bikes for two years, and always wore white reflective gear, a white helmet and rode a white bike.

Otago Regional Rescue Helicopter The Otago Regional Rescue Helicopter at the scene of a crash between a car and a motorcyclist at Shag Point, Otago, on Saturday.

"He wanted a red bike because they go faster . . . but I wanted him to be seen," McCarthy said.

"He specifically bought a brighter light for his bike, because he knew I was worried about safety, that's why he had all the white gear."

Chinese national Limin Ma, 41, has been charged with careless or inconsiderate vehicle operation causing injury. Ma appeared in the Dunedin District Court on Tuesday.

RILEY BAKER/SUPPLIED Riley Baker took this picture of police and bystanders rushing to help after a balcony collapsed at a surprise Six60 concert in Dunedin.

McCarthy said Baker had been heading to Oamaru and was to text her when he arrived. When he left, he was reminded to "drive safe".

"He said, 'I am always driving safe'."

After the crash she was told he had two broken wrists and a broken leg, "and would pull through fine".

RILEY BAKER Riley Baker took this picture of emergency services and members of the public carrying an injured person to an ambulance after a balcony collapsed near a surprise Six60 concert in Dunedin.

"We made jokes how he is a really bad sick person and I would have to get him a bell."

Baker had been semi-conscious immediately after the crash and gave his name to paramedics, but lost consciousness when he was taken to Dunedin Hospital and did not wake up again.

McCarthy said Baker's family were dealing with his death as best as they could, and were staying strong for his young niece and nephew.

Baker worked as a service technician and was passionate about photography, covering weddings, events, sports, landscapes and news, including the Six60 balcony collapse in March.

The couple had been planning to visit Iceland next year.

"He was going to take photos and I was going to spend two weeks in hot pools."

They were also talking about getting married.

McCarthy said she would miss the man who always made her laugh.

"He is simultaneously the biggest little s... I know and the best person in the world."

Just 53 people donated organs in New Zealand last year. That is up from 29 in 2005.

In total, there were 233 transplant operations in New Zealand last year for organs including hearts, kidneys, livers and lungs. That was up from 218 in 2014.