Pioneer 5 1/4" 2-way, 250 W Max Power, IMPP™ cone, 30mm Tweeter Coaxial Speakers (pair) Black TS-G520 - Best Buy
DC Gold Audio N5C 5-1/4" Black 300 Watt 8 Ohm Waterproof Marine Speakers - Rock The Boat Audio
JBL 521F Concert Series 5-1/4" 2-way car speakers at Crutchfield
KICKER CS Series 5-1/4" 2-Way Car Speakers with Polypropylene Cones (Pair) Yellow/Black 46CSC54 - Best Buy
Hifonics Alpha 5-1/4" 2-Way Car Speakers with Woven Glass Fiber Composite Cones (Pair) Blue/Black HA525CX - Best Buy | Hifonics, Cool things to buy, Car speakers
Kicker 46CSC54 Car Audio 5 1/4" Coaxial Full Range Stereo Speakers Pair CSC5 713034088356 | eBay
HiVi CF250II 5-1/4" 2-Way Coaxial Car Speaker Pair