The D819 is a tank. Super durable, and as for option parts, the car is solid right out of the box. I would suggest investing in Hard Arms, Rear Carbon arm insert and aluminum servo horns. If your track is high bite you might want to pick up a few of the other option parts like 2.75 degree rear D block. Oh Yeah, last but not least, VPR Pistons and P1 bladder shock caps.