ACL Bearings 4B8431H-.025 High-Performance Connecting Rod Bearing Set Suzuki Hayabusa .025mm Oversized

The ACL 4B8431H-.025 is a high-performance connecting rod bearing set specifically designed for Suzuki Hayabusa motorcycles (GSX1300R), featuring .025mm oversized dimensions for precision engine builds and rebuilds. Part of ACL's Race Series, these trimetal engine bearings combine advanced design, metallurgy, and engineering to deliver the performance and reliability demanded by high-RPM racing applications.

Race-Proven Features:

• High-strength overlay plate with reduced thickness for improved fatigue properties
• Hardened steel backs on all rod bearings to improve bearing lining support and assist with bearing retention in the housing
• Elimination of flash plating on the bearing backs to improve heat transfer and maximize grip between the bearings and housing
• Increased eccentricity to compensate for bore distortion at high RPM and assist in the formation of hydrodynamic oil films
• Increased crush for improved bearing retention

Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are engineered for demanding performance applications including motorsports, racing, and high-output street builds. These bearings provide superior quality with higher bearing capacity than standard bearings, with improvements in material composition, dynamic thickness, heat conduction, oil grooves, and oil distribution.

This bearing set fits Suzuki 1299cc and 1341cc (GSX1300R Hayabusa) Inline-4 DOHC engines. The .025mm oversize is designed for crankshafts that have been machined to accommodate slightly larger bearing dimensions during performance rebuilds.