Paraglider pilot reported a NMAC while approaching the airport when a PA-25 aircraft overflew the paraglider's centerline flight path. The reporter stated they made a diving turn to avoid the aircraft and continued to landing.

Narrative

Event Description:On Day at XA:50Z a near miss occurred between a Piper PA-25 Comanche and a Gravity Defiant Paramotor (Ultralight). The incident occurred 2.7 NM west of ZZZ; about 4 min prior to sunset. The ultralight was on a heading of 104 at 46 mph approaching ZZZ at a GPS altitude of 820 feet; when the PA-25 overflew the centerline of the ultralight from directly astern at a GPS altitude of 975 feet. The separation at the closest point of approach was 155 feet; with a closing velocity of 120 mph; based on review of ADS-B data. The PA-25 was not maneuvering prior to the merge nor after the merge implying that the PA-25 pilot did not see the ultralight. Immediately after the merge the ultralight made a diving right hand turn losing 400 feet of altitude and developing lateral separation from the PA-25's flight path in order to clear the wake turbulence; before returning to stable flight and landing at ZZZ.Contributing Factors:-The PA-25 pilot was heads down at the time of the incident and did not 'see and avoid'-It was about 4 min prior to sunset-The ultralight has a blind spot to the rear of the aircraft-The ultralight's wing is predominantly black with neon green and white striping-The ultralight does not have ADS-B-The ultralight was not on CTAF/UNICOM at the time of the incident-During maintenance on the ultralight the day prior; the two strobes located on opposing sides of the ultralight were removed. They were not re-installed prior to flight. The SOP for strobe usage is to turn the strobes on 30 min prior to sunset or when in the vicinity of ZZZ.