Product Description

Michigan Motorsports LS Rod Bearings – SI-Series Standard Size

Bi-Metal Silicon Aluminum Connecting Rod Bearing Set for Gen III & Gen IV LS Engines

Michigan Motorsports SI-Series LS Rod Bearings are engineered for stock and performance Gen III and Gen IV LS engine builds using factory crankshafts. Featuring a bi-metal silicon aluminum construction, these standard-size connecting rod bearings deliver improved oil clearance and enhanced surface conformity to reduce wear, noise, and vibration. The SI-Series design helps correct microscopic ferrite peaks commonly found on improperly ground or polished nodular cast iron crankshafts, resulting in improved bearing life and dependable performance for street and performance applications.

Key Features

SI-Series Performance Design: Designed for stock and performance LS engines using factory crankshafts, delivering reliable oil control and durability.
Bi-Metal Silicon Aluminum Construction: Provides excellent load capacity, wear resistance, and long service life for connecting rod journals.
Improved Oil Clearance: Helps reduce bearing wear, operating noise, and vibration while maintaining consistent oil flow.
Enhanced Journal Conformity: Reduces microscopic ferrite peaks on nodular cast iron crankshafts for increased bearing longevity.
Complete Engine Set: Includes a full set of eight (8) standard-size rod bearings to service all connecting rods.

Key Fitments

Engine Compatibility: Designed for Gen III and Gen IV LS-based V8 engines.
Displacements: 4.8L, 5.3L, 5.7L, 6.0L, and 6.2L LS engines.
Bearing Size: Standard size connecting rod bearings for factory crankshaft applications.