Kuat Piston SR 2 inch Hitch Mount Adapter 1 Bike. With a weight limit of 100 pounds it s a great accessory for a heavier e-bike. The perfect wingman for all your cycling adventures. Specifications for Kuat Racks Piston SR 2 inch Hitch Mount Adapter - 1 Bike: Manufacturer: Kuat Racks Length: 2 in Color: Black Features of Kuat Racks Piston SR 2 inch Hitch Mount Adapter - 1 Bike Piston e-bike ramp compatible Hitch lock included Flatlock hitch cam system For use with the PISTON SR Package Contents: Kuat Racks Piston SR 2 inch Hitch Mount Adapter - 1 Bike Kuat APSRH21B: Piston SR 2 inch Hitch Mount Adapter 1 Bike