It comes after emergency services received reports of an incident in Claxton Grove at 11.19pm on June 11.
Two men were treated for gunshot wounds and were taken to hospital.
Oliver Rodney, a 30-year-old resident from Northolt, died on June 12.
The second victim, also in his 30s, has since been discharged with minor injuries.
Jahmel Joseph, 28, of Eaton Rise, Ealing has been charged with murder, attempted murder, possession of a firearm with intent to endanger life, possession of a prohibited weapon and dangerous driving.
Det Chf Insp Alex Gammampila said: “We are working at pace on this investigation, but are asking the public to help us trace what we believe was the motorbike used by the suspect in the shooting.
“The Yamaha MT-09 Tracer motorbike was last seen on CCTV in the Ealing area, near Eaton Rise.
“If you have any recollection of seeing it at any point on the day of the incident, or in the days afterwards, please call the police as soon as possible.”
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Joseph will next appear at the Old Bailey on September 2.
Anyone with information that can help, please contact the police as a matter of urgency on 101 quoting 8916/11JUN or visit here.
To remain anonymous, call the independent charity Crimestoppers anonymously on 0800 555 111 or visit crimestoppers-uk.org.
