The Trailer Idler Hub Assembly part # AKIHUB-5475-35-EZ-K is compatible with the Timbren Axle-Less Trailer Suspension System part # ASR3500S04 and has the 5 on 4-3/4" bolt pattern you are after. If you want to add brakes you would need the Trailer Hub and Drum Assembly part # AKHD-5475-35-EZ-K and Electric Trailer Brake Kit part # AKEBRK-35-SA instead. Also, the Mounting Hardware for 10" Brake Assemblies part # BRKH10B would be needed if adding brakes.
The Timbren Axle-Less Trailer Suspension... view full answer...