Replacement GMN Precision Angular Ceramic output shaft bearings that fit D1SC, P1SC, P1SC-1, P1SC-2. These are the same OEM bearings that Pro Charger uses in their superchargers.
The use of low cost, non-precision bearings supplied by ‘discount stores’ is not recommended. They can cause gear failure, case damage, impeller failure and even send shrapnel through your engine due to failure. Use of the correct cage, style, RPM, load, and heat range and pre-load is recommended. These places have no concern for your engine or your supercharger and are only after making a few dollars.