they are nutech mt shocks,, using thunderbolt 2 shock end lowers on front ,, they are shorter than the mt's these shocks are same length set up this way as the stockers,, losi springs do fit,, I bought all the parts separate and built them,, nutech is about a hour and half from where I live,, nice people there,, I raided there shelves,, bought extra wt springs,, some other extra parts etc,, payed about 110,,, or so,,, been some time since I bought them, remember was cheaper to buy the parts and put together than just to buy the shocks already made,,, oh and the gallon of 40 wt to fill them,,,,,,,,,,,lol