An 82-year-old man was seriously injured in the incident and later died in hospital.
The crash took place on the A65 New Road just before 11am outside the Morrisons Petrol Station on Friday, July 22.
Police investigating the incident say they are particularly interested in speaking to another cyclist who was in the area at the time of the collision.
This cyclist has not yet spoken with police and officers are keen to understand if the cyclist has any further information which may assist with the investigation.
If you are the cyclist in question or may know who they are, please contact the Roads Policing Unit on 101, or via the LiveChat facility on the West Yorkshire Police website.
The log reference is 0566 of July 22.