HPI Racing shocks have threaded aluminum bodies and an adjustment wrench for fast ride height adjustments, just like coil covers for real cars! Standard features include silicone shock oil for consistent damping over a wide range of temperatures, an internal bladder to prevent oil frothing, silicone o-rings for smooth movement, and street tuned springs. Not only do they add performance on the street, they look fantastic too! They come pre-assembled to exact HPI factory specifications for a quick and easy bolt-in fit. Sold in pairs, order two pairs to fully outfit your E10.