Review on Optimized Spring Absorber Assembly by Hongnor by David Ruwala

Not bad at all, especially for the price. I drive them in a 4WD Traxxas for carpet racing. The plot is gentle, the ending is good. However, they are quite soft. You can install harder springs. They come with oil in it but don't know how much it weighs. I put 45 on the front and 40 on the back. Piston 3 holes. I'll try to plug a hole to see if that helps them a bit. Otherwise I think a heavier weight oil might work. The only real issue will be the spare parts but these are very similar to the others as the plastic parts can be swapped out. In general it is recommended.