Fixed Chainwheel 48V 500W Tricycle Conversion Kit Can Load 250kg Go Forward And Backward For Electric Wheelbarrow Bicycle|Electric Bicycle Accessories| - AliExpress
Motorized Trike Conversion Kit
Hollow Hub Trike Conversion Kit
38 Bike to trike conversion kits ideas | trike, bike, cargo bike
CHROME TRICYCLE CONVERSION KIT 5/8" AXLE HOLLOW HUB WHEELS for 12" or 16" BIKES | eBay