This will fit both RD250/350LC and the YPVS 350 as well. The picture shows my casing I removed the inside of the casing and put in the back a 5mm clear plastic cover so you can see the clutch basket.
YPVS RD 350 LC S/S LASER CUT TUNING FORK CLUTCH COVER AND BLANKING PLATE
avdb -Moto Pair of Front Fork Tubes Compatible with Yamaha RD350LC RD 350 LC YPVS 1983-1985, RD 250 LC / RD250LC 1982-1983, RZ350 L/N/NC 1984-1985, RZ250 / R 1982-82-1982-1982-1985 1983 The pair
avdb - Motorcycle Front Fork Tube Compatible with Yamaha RD350LC / RD 350 LC YPVS 1983-1985, RD 250 LC / RD250LC 1982-1983, RZ350 L/N/NC 1984-1985, RZ250 / R 1982-1982-1985 983 One Single Side
Foam Air Filter JMP For Yamaha RD 350 LC YPVS 1983 - 1984
Yamaha RD 350 LC F2 YPVS 1985-1988 [JMT Lithium Motorcycle Battery]