King Engine Bearings MB5527XP Main Bearing Set for Toyota 4AGE 4AGZE 1.6L 16V

The King Engine Bearings MB5527XP is a high-performance main bearing set engineered specifically for Toyota 4AGE and 4AGZE 1.6L 16-valve engines. Part of King Racing's XP Series, these bearings feature advanced metallurgical technology designed to withstand extreme performance loads in racing applications using forged steel aftermarket crankshafts.

pMax Black Tri-Metal Technology:

The XP Series features King Racing's proprietary pMax Black tri-metal construction, which is 24% harder than conventional tri-metal race bearings. This enhanced copper-lead construction includes a nickel barrier layer and SecureBond adhesion process for superior stability between layers. The 0.0005-inch metallurgically enhanced and hardened performance overlay provides exceptional resistance to surface fatigue under sustained high loads.

Key Performance Features:

• Bulls Eye Tolerance: Industry-leading wall tolerances with all shells matched to 0.0001 inch for precise fitment
• 15-30% Greater Load Capacity: Significantly exceeds traditional bearing performance limits
• Half-Grooved Design: Main bearings feature 1/2 grooving for uncompromised lower shell load capacity
• Enhanced Oiling: Enlarged, chamfered oil holes for improved lubrication flow
• Medium Eccentricity: Optimizes load distribution and oil film characteristics
• Narrowed Profile: Designed for compatibility with large-radius crankshafts
• SecureBond Process: Unique adhesion technology ensures superior layer stability

Ideal Applications:

The MB5527XP bearing set is engineered for high-load, long-duration racing applications including circle track, road racing, and other demanding motorsports environments. These bearings are specifically designed for use with forged steel aftermarket crankshafts that produce sustained high loads and operate at elevated RPM ranges.

King Engine Bearings are manufactured to exacting specifications and represent the industry's most comprehensive selection of performance bearing solutions for serious engine builders and racing professionals.