ACL Bearings 4M1934-STD Standard Main Bearing Set

The ACL Bearings 4M1934-STD is a standard size main bearing set engineered for precision engine builds. This complete main bearing kit features ACL's proven tri-metal construction, combining high strength with excellent durability for demanding operating conditions.

Key Features:

• Tri-metal bearing design provides superior strength and fatigue resistance
• Standard size bearings for use with factory specification crankshafts
• High-strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backing improves bearing lining support and retention in housing
• Increased bearing crush ensures secure fitment and proper tension
• No flash plating on bearing backs for improved heat transfer and maximum grip
• 3/4 grooved design optimizes bearing load surface area and oil flow to connecting rods
• Manufactured to ISO certified quality standards

ACL main bearings are trusted by engine builders worldwide for both OEM replacement and performance applications. The precision-engineered design ensures proper oil clearances and reliable operation under a wide range of conditions. Each bearing set is manufactured using advanced tooling and engineering to deliver consistent quality and performance.