The 2” diameter body is made of anodized 6061-T6 aluminum Internal IPF piston in the reservoir separates oil from gas under high pressure Components made of anodized 6061-T6 machined aluminum Chrome-plated 1/2” diameter heat-treated steel piston rod Engineered for motorsports high flow piston Triple sealing system Advanced JM92 oil for superior performance regardless of temperature Rubber bearing enhances suspension performance