- 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.
| Sizes | STD, .025, .25, .50 |
| Oil Clearance | Standard |
| Half Type | Identical Halves |
| Material | Tri-metal Hardened steel backs |
| Min. Std Shaft Size | 1.7707in / 44.975mm |
| Max. Std Shaft Size | 1.7713in / 44.991mm |
| Min. Std Tunnel Size | 1.8898in / 48.000mm |
| Max. Std Tunnel Size | 1.8904in / 48.016mm |
| Max Wall at Crown | 0.0588in / 1.493mm |
| Max Overall Length | 0.709in / 18.00mm |
| Weight | 0.2 |
| Notes | 0 |
| Make | Engine | Description | Vehicles |
| M20B20, M50B20, M52B20 | SOHC/DOHC 12v/24v | 320, 520, Z3 |
| M54B22 | DOHC 24v | Z3 |
| M20B23 | SOHC 12v | 323 |
| M20B25, M50B25, M52B25, M54B25 | SOHC/DOHC 12v/24v | 325, 525, Z4 |
| M20B27, M50B27 | SOHC/DOHC 12v/24v | 325 |
| M52B28 | DOHC 24v | 328, 528, Z3 |
| M54B30 | DOHC 24v | 330, 530, X3, Z3, Z4 |
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