Spring Cup. Length from top of plate to bottom of weight jack bolt 3". Bryke Racing Part #320-320.
Detented Lightweight Spring Cup Weight Jack System use w/1" Course Weight Jacks
20189 Swivel Weight Jack Spring Cup Assembly Heavy Duty 5.5" Jack Bolt IMCA
ARC 20189 Swivler Spring Cup w/ 5.5" Long Weight Jack Bolt IMCA Sport Mod Stocks
Lightweight Weight Jack Cup PAIR IMCA USMTS UMP LW Light weight Front Dirt sport
Lightweight Weight Jack Cup IMCA Modified USMTS UMP LW Light weight Front Dirt
Swiveler Weight Jack bolt Weightjack Cup Swivler Steel Kit IMCA USMTS sport mod
