The three most valuable reasons for using Energy Suspension's Hyper-Flex components are performance, durability and appearance. Energy 3.1129 Transmission Mount - GM About this item These sets include one replacement polyurethane motor mounts sized to match OEM equipment for easy bolt-on installation. Important Note: This is the early style... 1982-1990 GMC S15 Body Mount - Energy Suspension 3.4130G Proven on the race track as well as the street, on and off-road, under the most demanding conditions. Energy Suspension 3.1114R | Gm Early Eng Mnt Zinc Plated... Proven on the race track as well as the street, on and off-road, under the most demanding conditions. Certainly not what you want on your vehicle. Durability is superior for cars, trucks and SUVs; road salt, oil, and a host of other common under car contaminants will eventually destroy the rubber bushings on your vehicles, not to mention the weight and torque forces that typically compress rubber Energy Suspension 3.6117G Energy Suspension Radiator Isolator Pads... Hyper-Flex replacement polyurethane components stand up well to contaminants that often destroy rubber and have been engineered to give longer-lasting performance and not compress permanently Over twenty years of positive customer raves have attested to that. Energy Suspension 3.1114R Motor Mount - Short Wide Red For 57-82 SBC And for improved appearance, Hyper-Flex components are available in red or black, to suit your needs for show or go. Durable Hyper-Flex components do not rot or deteriorate from exposure to oils and undercar chemicals or atmospheric conditions like smog and ozone., Unlike O., E., M. Hyper-Flex is offered in a variety of durometers (firmness or softness), depending on product application; performance tested and race proven; used for all of Energy Suspension products that require a higher level of performance and durability