Timbren spacer kit for the 2011 Ford F-250 Super Duty adapts your Timbren SES rear helper springs when a lift increases the frame-to-axle gap to about 7.50"–9". The kit includes two 1-inch and two 1/2-inch spacers with all necessary hardware and is used with the FR250SDG SES assembly to mix-and-match spacer combinations for correct ride height while hauling or towing, and carries Timbren's stated lifetime warranty.
Timbren 2011 Ford F-250 Super Duty SES Spacer Kit