ACL Bearings 4B2201HX-STD High Performance Rod Bearing Set for BMC Mini - 997cc/998cc

The ACL Bearings 4B2201HX-STD is a Race Series high performance connecting rod bearing set designed for BMC Mini inline 4-cylinder engines with 997cc and 998cc displacement. This standard size bearing set features ACL's HX designation, providing an additional 0.001 inch (0.025mm) of extra oil clearance compared to standard H-series bearings, making it ideal for high-performance builds and racing applications where precise clearance control is critical.

Key Features:

• Standard size rod bearings with extra 0.001" oil clearance (HX specification)
• Premium F781 tri-metal bearing material for superior strength and durability
• Hardened steel backing on all rod bearings for improved support and retention
• High-strength overlay plate with reduced thickness for enhanced fatigue resistance
• No flash plating on bearing backs for improved heat transfer and housing grip
• Increased eccentricity to compensate for bore distortion at high RPM
• Manufactured to exacting tolerances for consistent wall thickness and reliable fit

Technical Specifications:

• Bearing Size: Standard (STD)
• Bearing Type: Identical halves
• Overall Length: 22.35mm (0.8799")
• Shaft Size Range: 41.285-41.298mm (1.6254-1.6259")
• Tunnel Size Range: 44.971-44.983mm (1.7705-1.771")
• Vertical Oil Clearance: 0.003-0.065mm
• Wall Thickness at Crown: 1.811mm (0.0713")

ACL Race Series bearings are recognized throughout the motorsports world for their exceptional endurance and performance capability. These bearings are standard components in race engines competing in everything from sport compact drift racing to NASCAR, IHRA, and NHRA competitions. Compatible with Leyland A-Series engines including 997cc, 998cc, and various Mini applications, this bearing set delivers the reliability and precision demanded by engine builders and racers worldwide.