Universal roadkill fast ring (130 mm).

Roadkill fast ring fits 130 mm (5" & 5.25") speakers.
RKFR5

Our 3-piece foam ring speaker enhancement system solves the problem of acoustically coupling aftermarket speakers to factory speaker openings. 
The RoadKill Fast Rings kit increases speaker output, improves the projection of the audio into the car cabin and reduces unwanted rear reflections that can degrade the sound.