I have a stock windscreen and front/rear sprocket set from my 2021 Ninja 650. $40 each shipped.

OEM windscreen part number 39154-0385 was painted with black rubber peel coat spray from the rear facing side and can be removed.
Fair condition. Swirl marks. No cracks. Good track day spare or experimental replacement.

OEM Sprocket set 17-21 EX650 650 Ninja 650R Front & Rear Set. Kawasaki part numbers 13144-0576 and 42041-0087