Description Need a set of replacement 16 heavy direct return springs for one of our kits, transmission builds, or just looking for an upgraded set of springs for your TH400/4L80E? Look no further. These are the exact aftermarket drum springs that ATD uses in all of our in-house racing transmissions and included with all of our valvebody & transbrake kits. Includes a 1 set of 16 springs (one direct drum set). Designed and manufactured in the USA.
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