Good bang for you buck with these shocks which are much better than the standard plastic dampers that come with the kit. They come assembled and pre-filled with oil so just whack them on and off you go. They have a ring which allows you to easily adjust the spring rates. The damper oil is medium/soft so it's good for off road and bashing around but too soft for indoor artificial turf. The only drawback is that the mounting points are made from plastic which could get cracked or broken. Overall when you consider the price they are a really good hop-up if you don't want to pay more than double for Tamiya.