It happened on a minor road at Robbery Wood near Stockland Bristol at around 5.40pm yesterday.
The cyclist received treatment at the scene but sadly died shortly afterwards.
Police had asked the public for help identifying the man - as he hadn't carried any ID with him, and no one had reported him missing.
Avon and Somerset Police have since given us an updated saying "The cyclist has been identified. He is a man in his 50s from the Bridgwater area. We're still appealing for witnesses to the incident"
Anyone who witnessed what happened is asked to contact police on 101 quoting reference 5220015515