Almost 100 motorbikes turned up on Friday to celebrate with Zane

His mother asked 'anyone with a Harley' to help celebrate his birthday

Crowds of bikies revved their Harley Davidson's to help celebrate the birthday of a boy with cerebral palsy after his mother put a call out on Facebook.

Western Australian mother Keira Evans took to Facebook on Thursday to ask anyone with a Harley Davidson to 'pop by' McDonald's in Bunbury to surprise her son Zane on his birthday.

Zane loves motorbikes and his mother said he would be 'stoked' to see one on his big day.

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Mother Keira Evans (pictured centre with glasses) took to Facebook on Thursday to ask anyone with a Harley Davidson to 'pop by' McDonald's in Bunbury to surprise her son Zane (pictured centre) on his birthday

Motorbikes rolling into McDonald's on Friday to help celebrate Zane's 13th birthday

Hundreds of Harley Davidson's revved their engines to help celebrate a Zane's 13th birthday after his mother put a call out on Facebook

Hundreds of strangers turned up for Zane's birthday in a heartwarming show of community support

Zane (pictured) loves motorbikes and his mother said he would be 'stoked' to see one on his big day

Zane's mother Keira, (pictured left) who was in tears, thanked the community for the impressive turn out

'Does anybody have a super loud Harley or motorbike and is free tomorrow around lunch time,' Ms Evans wrote on Facebook.

'It's our big guys 13th birthday tomorrow and boy is he in love with motor bikes.

'The louder the better!

'It would make his absolute day if you could pop by McDonald's Eaton around 12.40 to give us a wave and a bit of a rev.'

In a heartwarming show of community support almost 100 strangers turned up with their motorbikes on Friday to wish Zane well.

Some gave him gifts, including a motorbike helmet and a Harley t-shirt, before the crowd sung him happy birthday.

Almost 100 people turned up with their motorbikes to sing Zane happy birthday

Well wishers riding their motorbikes through the streets of Bunbury, Western Australia

Zane, who loves motorbikes, celebrated his birthday with almost 100 Harley Davidsons on Friday

Zane's mother Keira, who was in tears, thanked the community for the impressive turn out.

'I don't know any other 13-year-olds that get to celebrate their birthdays like that,' she told 7 News.

'He'll be remembering this for a long time.'

Motorbikes revved their engines to help celebrate Zane's 13th birthday after his mother put a call out on Facebook

Some gave him gifts, including a motorbike helmet and a Harley t-shirt, before the crowd sung him happy birthday