Clevite H-Series Coated Main Bearing Set - Standard - Big Block Chevy 13-RS1-B-S Aluminum Suspension Tubes are a

Aluminum Suspension Tubes are a scalloped design which result in being 35% stronger than conventional aluminum tubes

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Clevite H-Series Coated Main Bearing Set - Standard - Big Block Chevy 13-RS1-B-S Aluminum Suspension Tubes are aClevite H Series performance bearings have a medium level of eccentricity, high crush, and a hardened steel back and thin overlay. These bearings are made without flash plating for better seating. Use H Series bearings with crankshafts that have oversize fillets and where engines run in the medium to high RPM range. Product Description: Main Bearing H Series Standard Coated Big Block Chevy Clevite engine bearings have an extensive, long standing