S&S Cycle 08-17 BT Improved Inner Primary Bearing RaceBrand S&S Cycle Part Number 560 0241 Category Engine Components Bearings Condition Brand New Original Manufacturer Packaging The tendency of the stock inner primary bearing race on late model big twins to shift on the transmission mainshaft under high torque loads, also known as "walking" of the race, can cause destruction of the transmission mainshaft seal, and ultimately the mainshaft seal, output gear and output gear bearing. The S&S inner primary
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