King Engine Bearings MB5731XP STDX Main Bearing Set for Suzuki G13A G13B G13BA G13BB

The King Engine Bearings MB5731XP STDX is a standard-size main bearing set engineered for Suzuki G13-series engines, including the G13A, G13B, G13BA, and G13BB. King Engine Bearings is a globally recognized OEM and performance bearing supplier known for precision manufacturing tolerances and advanced metallurgy.

These main bearings are produced using King's XP (Xtreme Performance) technology, which features a proprietary tri-metal construction — a steel backing with an intermediate copper-lead or aluminum alloy layer and a precision-applied overlay — delivering exceptional load capacity, conformability, and wear resistance. The STDX designation indicates standard sizing with XP-series enhanced performance characteristics, making these bearings suitable for both stock rebuilds and mild performance applications.

Key Features:

• XP Series Technology — Advanced tri-metal bearing construction for superior durability and fatigue resistance
• Standard Size (STD) — Direct replacement fitment for unmachined or factory-spec crankshafts
• High-Load Capacity — Engineered to withstand elevated oil pressures and operating temperatures
• Precision Tolerances — Manufactured to tight dimensional specs for optimal oil film and clearance
• Full Set — Includes all main bearing shells required for a complete engine rebuild
• Compatible Engines: Suzuki G13A, G13B, G13BA, G13BB

King Engine Bearings are trusted by professional engine builders and OEM manufacturers worldwide. The MB5731XP STDX is an ideal choice for anyone performing a bottom-end rebuild or full engine overhaul on a Suzuki G13-series engine, ensuring long service life and reliable performance.