Be seen and be safe. Here is the rectangular rear reflector for 90cc ATVs, including the Baja Wilderness Trail 90 (WD90U) with the VIN Prefix LUAH.
Approximately 3" long and 1" wide, this red reflector can be used on numerous other brands and models of ATVs, scooters, go-karts, dune buggies, and just about anything else.