Mamas and papas made up the vast majority of those who joined the No 2 Helmets Rally at Constitution Park.
They were unhappy that helmets are compulsory for all motorcyclists on Rarotonga, from June 26.
Protesters said the helmet law shouldn’t have been amended in the first place, and helmets should only be required for those who are 25-years-old and under, or those who exceed 40kmh.
The amendment was rushed, rally organiser Moana Moeka’a said, and there should have been more public consultation.
Terai Aurupa, who in her 70s, took part in the rally. “They should make the helmet law back to what it was, for 25 years and under,” she said.
A chorus of beeping horns and a quick loop of Avarua township, while escorted by police officers on bicycles, was welcomed by onlookers who lined the street and cheered.
Moeka’a said it was not too late to amend the act, and he hoped Cabinet would seriously consider revisiting the new legislation.
His daughter Rima said: “This rally showed people power.”