KICKER CS Series 6-1/2" 2-Way Car Speakers with Polypropylene Cones (Pair) Yellow/Black 46CSC654 - Best Buy
Amazon.com: NVX® 6 1/2 inch Professional Grade True 100 watt RMS 2-Way Coaxial Car Speakers [V-Series] with Silk Dome Tweeters, Set of 2 [VSP65] : Electronics
KICKER 6-1/2" 2-Way Car Speakers with Polypropylene Cones (Pair) Black 44KSC6504 - Best Buy
Pioneer 6-1/2" 6.5-inch 3-way Coaxial Car Audio Speakers Pair 640w Max | eBay
Pioneer TS-600M, 6-1/2" 4-way Coaxial Speakers, 320W Max Power | 11mm Tweeter and 11mm Super Tweeter and 1-5/8" Cone Midrange | Coaxial Speakers | (Sold in Pairs) - Walmart.com
5555-16059-00 - 6-1/2 inch outer diameter 4 ohm woofer speaker used in many pinball machine and video cabinets
Focal ES 165 KX3 K2 Power 6-1/2" 3-way Component Speakers | World Wide Stereo
Pioneer 6 1/2" Component Car Speaker | P.C. Richard & Son
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BOSS R63 Riot 6-1/2" 3-Way 300W Full-Range Speaker Pair