PART NUMBER: 8523. Belltech designed the Nitro Drop 2 shock line to provide the Truck and SUV market with a unique blend of shock tuning. This new setup concentrates on the Comfort level while also increasing the overall performance of the complete suspension system.
I only know that these items were of good quality. I gave them as a gift to my grandson and that is all I can say about the items at this time as I have not talked to my grandson about them.
He has not said anything so I assume he is happy with them.