Amazon.com : Black Trike Conversion Kit for 20 inch Bicycle. Comes with Two 20 inch Hollow-Hub Steel Wheel 36 Spoke. Tricycle, Trike, Three-Wheel Bike Conversion kit : Sports & Outdoors
Avenger Trike Conversion Kit | MRCycles
The ALL NEW HTX kit from Roadsmith trikes: For the new 2018 Goldwing 1800's — UNB Customs: Trike & Custom Shop