- High strength overlay plate with reduced thickness for improved fatigue properties.

- Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.

- Increased crush for improved bearing retention.

- Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing.

- Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.

- 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.

- Tight consistent wall tolerances to help you maintain consistent clearances.

- Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

ROD BEARINGS | ACL TRI-METAL | 4G63

Standard Standard w/ an additional .001 clearance .010" / .25mm Over

TRI-Metal Rod Bearings DSM 6-Bolt $42 TRI-Metal Rod Bearings DSM 7-Bolt $40 TRI-Metal Rod Bearings Evo VIII-IX $40

MAIN BEARINGS | ACL TRI-METAL | 4G63

Standard Standard w/ an additional .001 clearance .010" / .25mm Over

ACL TRI-Metal Main Bearings TRI-Metal Main Bearings: DSM 6-Bolt $70 TRI-Metal Main Bearings: DSM 7-Bolt (92-97) $80 TRI-Metal Main Bearings: DSM 7-Bolt (June 97-99) $65 TRI-Metal Main Bearings: Evo VIII-IX $65

ACL ALUGLIDE THRUST WASHER SET | 4G63 1997+

June 1997-99 engine set of thrust washers from ACL Engine Bearings (for all 1997+ 4g63, cranks using thrust washers.)

DSM 7-Bolt (June 1997-99) $15 Evo VIII-IX $15