Scam/Fraud Advisory Add HTG to Your Homescreen! Horse Trailer Care TipsTop Care Tip: Clean under your mats! Horse urine seeps under mats causing hidden damage to all floor types. We found 2 trailers... Sort: Price Manufacturer Year New First Used First Latest Distance (enter zip) Zip: Used '01 Hart 2 Horse Straight Load Gooseneck Trailer (#30856B) National Trailer Source - Wickenburg, Arizo $14,999.00 Used '05 Hart 4 Horse Gooseneck Trailer with 6' Living Quarters (#34327B) National Trailer Source - Decatur, TX $22,999.00 End of list Use our Advanced Search to find exactly what you want.