I just checked mine as a result of reading this thread. Mine is 10" and has been on since 2016. Two cross country trips plus numerous others, lube plate looks good and is firmly held onto the king pin. Guess I'm lucky!
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'05 F250 6.0 Bullet Proofed - Sold
'17 F350 6.7 Lariet
'02 Montana 3280RL Upgraded a bunch.
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