The collision happened on the A127 near Brentwood (credit: Google Maps)
A Harley Davidson and a Vauxhall Vivaro van crashed close to the Halfway House on Tuesday, 11 August at around 4.20pm.
The motorbike rider was rushed to hospital for his injuries.
He remains in a stable condition.
Anyone with information or dash cam footage is asked to call Chigwell Roads Policing Unit on 101 incident 882 of 11/08.
Information can also be reported online by visiting www.essex.police.uk or you can call Crimestoppers anonymously on 0800 555 111.
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