Metra 72-4568 GM Speaker Plug GMSB-345 5-1/4" to 6-1/2" speaker adapte – absoluteusa
98-'13 Street Glide Horn Grills with 6.5" Speaker Adapters
2X Universal Car 5"x 7" 6"x 8" to 6.5" Speaker Adapter Bracket Harness – absoluteusa
5x7 to 6x9 Harley Boom Speaker Adapters | Scosche
Amazon.com: Metra Electronics 82-6901 Universal Speaker Adaptor Plates,Black : Electronics
5.25"-to-6.5" Speaker Adapter 98-13
Scosche SA69 5-1/4" or 6-1/2" Speaker to 6" x 9" Mounting Hole
American Hard Bag IP-14-5X7-6X9-L Speaker Adapter Set 5×7 to 6×9 + Hertz SX690NEO Speakers For Harley Davidson® CVO Lids 2014-2022 WITH Electric Locks – Volunteer Audio
Heavy Duty METAL Aftermarket Speaker Adapter 5.25 5 1/4 Plates Replaces 4 x 6 | eBay
Amazon.com: Scosche Compatible with Select 2006 to 2013 Harley Davidson Motorcycle with Boom Audio Saddlebags 5”x 7” to 6”x 9” Speaker Adapter (1 Pair) SAHD6901B : Electronics
SAGTE6 Speaker Adapter | MTX Audio - Serious About Sound®
2PCS 8 - 6.5 inch for Volkswagen Magotan Skoda Washer Adapter Brackets Speaker Mount Plates Special Speaker Mat Solid Pad Nylon - AliExpress
Amazon.com: Scosche Compatible with Select Import and Domestic Vehicles 5" x 7" / 6" x 8" to 5.25" - 6.5" Adapters (1 Pair) SA68 : Electronics
4"/5"/6"/6.5" inch Audio Speaker Spacer Adaptor Ring Bracket Mounting Adapter | eBay
Custom Made 6x8 to 6.5" Speaker Adapter (Fits Select Ford Vehicles) – Sounds Good Stereo Online
Car Audio Speaker Accessories Parts 6X9 to 6.5 Inch Cast Aluminum Adapter Ring Speaker Mounting Spacer for Toyota Camry - China Car Audio, Speaker Accessories Parts | Made-in-China.com
Amazon.com: Speaker Adapter Spacer Rings SAK006_55 Universal 5x7" or 6x8" to 6 1/2" 6.5-1 Pair - SAK006_55 : Automotive
Focal 5" X 7" / 6" X 8" High Quality Aluminum Speaker Adapter Ring
Focal 5" X 7" / 6" X 8" High Quality Aluminum Speaker Adapter Ring