This motormount is made using 6061 aluminum, and then tumbled for a polished finish. this mount has a proven track record and this design has been in use on other models for 5 years. It is important to note that the top blocks are made using delrin material and is compatible with the V 3 models.THIS MODEL IS DESIGNED TO WORK WITH THE V3 MODEL trucks. IT WILL NOT WORK WITH THE V4 ROLL CAGE MODEL . ONLY THE V3 MODEL ROLL CAGE.