ja das ist Plastic das sind die gleiche wie die originalen bei mir sind mittlerweile die 2ten drive gears im differetial die gehen gerne kaputt yes it is plastic these are the same as the original with me are now the 2nd drive gears in the differetial break down like
they are the same as stock, they strip very easy, I have 4 trucks that use these and they break after about 3-5 runs out on my property,I have young kids that don't have much throttle control yet. I try to keep 4 complete diffs rebuilt at a time. I have about 12 sets on backorder right now and will be putting in my last spare set in to fix the last broke diff. UPGRADE THESE PARTS WITH BETTER MATERIAL OR BETTER DESIGN. PLEASE!!!!!!! I would be willing to pay more for a better diff. and I will need 4 of them.