560-0241 S&S® IMPROVED INNER PRIMARY BEARING RACE FOR 2008-UP HD® BIG TWINS 560-0241 clamp PISTONS 883-1200 CONV +30 9:1

PISTONS 883-1200 CONV +30 9:1 HYPER kb272-30

increasing time between rebuilds

FLH Revival 2021

Part Number : 321-30-02012

•Upgrade TC88 to 100 cu inches

560-0241 S&S® IMPROVED INNER PRIMARY BEARING RACE FOR 2008-UP HD® BIG TWINS 560-0241 clamp PISTONS 883-1200 CONV +30 9:1S&S CYCLE560 0241 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 bearing race features an extra step on the inside diameter that acts as a stop on the transmission