Electric Folding Mountain Bike with 26″ Super Lightweight Magnesium Alloy 6 Spokes Integrated Wheel, Large Capacity Lithium-Ion Battery (36V 250W), and Shimano Gear (Black)
Wake 25.4 Stem 32mm 60mm Bike Stem Mountain Bike Stem Short Handlebar Stem for Most Bicycle, Road Bike, MTB, BMX, Fixie Gear, Cycling (Aluminum Alloy, Black) (25.460)
Insulated Hydration Backpack with 2L Water Bladder – Lightweight pack for Running Hiking Riding Camping Cycling Climbing Fits for Men & Women (New Black)
Bike Light Batteries Pack Case, Waterproof Case for 6 x 18650, Rechargeable Cycling Safety Battery Pack Case House Cover with DC and USB Interface for Cycling Bike light Headlamp (Black for 6)
It fits great my Allen Sport AST200 trailer
this part can work with the Copilot bike trailers with a little work.