Superduty 99-04 Unit Bearing Tool Artec IndustriesDisassemble your 99 04 Unit Bearings to change out tone rings. Looking to do a 1 ton swap into a JK but worried about the ABS? Now you you can change the factory Superduty tone rings on your 1999 2004 Unit Bearings to match the factory JK 52 tooth tone ring count. This tool will allow you to disassemble the unit bearing and replace the tone ring. 1999 2004 Superduty Front Axle Unit Bearing Tool Precision CNC laser cut from 3 16 inch and 1 4 inch mild