Chrome Lowrider Trike Conversion Kit for 20 inch Bike. Comes with Two chrome 144 spoke wheels. Tricycle, Trike, three-wheel bike conversion kit - Walmart.com
Amazon.com : Trike Rear Axle,Tricycle Conversion Kit 7 Speed, 5/8Inch Axle(15.8mm),Black Or White Frame .This Tricycle Part Suitable for Adult Bicycle Or Motorcycle. (Black) : Sports & Outdoors
Black Tricycle Conversion Kit 5/8" Axle Hollow Hub Fixed Sprocket New | eBay