This highly versatile adaptor fits all bikes and wheels sizes, equipped with a maximum load capacity of 15kg for your extra bike. Compatible with VeloCompact 926/927 cycle carrier. Increases capacity by one bike. Load capacity for fourth bike: 15kg. Note: Not suitable for electric bikes. Weight: 2.8kg. The Thule VeloCompact 4th Bike Adapter 9261 will increase the capacity of your Thule VeloCompact 926 or 927 cycle carrier by one bike.