Mazda RX-8 Manual page 1042

5. Tighten the locknut using the SST .
Tightening torque
392490 N·m
o
{40.049.9 kgf·m, 289361 ft·lbf}
CAUTION:
Remove the seal protruding from the threads without it becoming caught in the pilot bearing.
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Pilot Bearing, Oil Seal Installation Note
1. Install the pilot bearing using the SSTs .
NOTE:
Bearing outer diameter: 20 mm {0.787 in}
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Press-in depth:
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(w) RX-8 Transmission (Manual & Auto)
Page 17