A man has been taken to hospital after a suspected road rage assault in western Sydney.

Police were called to a fight at Olympic Dr in Lidcombe just before 9.40pm on Monday, and found a 23-year-old man bleeding from a head wound.

A 38-year-old man at the scene had cuts and bruises. Officers were told the men began fighting after a road incident.

The younger man was taken to hospital but police said his wound is not believed to be serious.

Police are appealing for witnesses or anyone with dashcam footage to come forward.