ACL Bearings 5M8361H-.25 Race Series Main Bearing Set Toyota 3SGTE .25mm Undersize

The ACL Bearings 5M8361H-.25 is a Race Series main bearing set engineered specifically for Toyota 3SGTE and 3SGELC engines requiring .25mm undersize crankshaft bearings. These high-performance main bearings are designed to handle the extreme demands of racing and high-output engine builds.

Race-Proven Performance Features:

• Tri-metal construction with hardened steel backing for superior strength under high RPM conditions and extreme loads
• High-strength overlay plating with reduced thickness for improved fatigue resistance
• Increased crush design ensures positive bearing retention in the housing
• Enhanced eccentricity to compensate for bore distortion at high RPM and optimize hydrodynamic oil film formation
• 3/4 grooved main bearing design maximizes load-carrying surface area while maintaining proper oil flow to connecting rod bearings
• Flash plating eliminated from bearing backs to improve heat transfer and maximize grip in the housing
• Lead, tin, copper, and nickel alloy construction provides exceptional seizure resistance

ACL Race Series bearings are identified by the 'H' suffix and represent decades of motorsports heritage. These bearings deliver the unique combination of endurance and forgiveness needed for everything from aggressive street performance to professional racing applications. The .25mm undersize specification is designed for engines with crankshafts that have been machined .25mm under standard diameter for repair or performance purposes.