Powerflex Upper Engine Mount Insert PFF76-925PFF76 925 Upper Engine Mount Insert is an affordable and easy to fit bush insert made from our Yellow 70A Durometer vibration absorbing material, which works to stiffen the OEM upper engine mounting. This reduces twist of the engine under acceleration and during gear changes, giving the pedals a more direct feel, as well as reducing wheel hop and letting you get the power down that little bit quicker. We recommend fitting PFF76 925 alongside our other