VMC Chinese Parts Part number: 3900-270070 Qty. 1 2 3 4 5 6 7 8 9 10 Add to Cart Rear Disc Brake Cover for Crossfire 150R Go-Kart - is currently on backorder. You may still purchase now though and we'll ship as soon as more become available. Rear Disc Brake Cover for Crossfire 150R Cover specs: Black plastic 178mm [7.0" long Two 6.7mm bolt holes BD328