ACL Bearings 4B2902HX-STD Race Series Rod Bearing Set for Mini Cooper S W11B16

The ACL Bearings 4B2902HX-STD Race Series Rod Bearing Set is engineered specifically for the 1.6L supercharged W11B16 engine found in 2002-2006 Mini Cooper S (R50, R52, R53) models. This standard size bearing set features the HX designation, providing 0.001" additional oil clearance compared to the standard H series for optimized performance in high-RPM applications.

Race-Proven Performance Features:

• High-strength overlay plate with reduced thickness for superior fatigue resistance
• Hardened steel backing on all rod bearings improves bearing lining support and retention
• Increased crush design enhances bearing retention through higher radial contact pressures and improved heat dissipation
• Elimination of flash plating on bearing backs maximizes heat transfer and grip within the housing
• Increased eccentricity compensates for bore distortion at high RPM and assists hydrodynamic oil film formation
• Tight wall tolerances maintain consistent clearances for reliable performance
• Enlarged ID chamfers accommodate large fillet radius on performance crankshafts

Technical Specifications:

• Bearing Material: F781 tri-metal construction
• Bearing Type: Identical halves
• Shaft Size Range: 45.992mm - 46.008mm (1.8107" - 1.8113")
• Housing Bore Range: 49.00mm - 49.02mm (1.9291" - 1.9299")
• Vertical Oil Clearance: 0.040mm - 0.092mm (0.0016" - 0.0036")
• Overall Length: 17.25mm (0.6791")
• Wall Thickness at Crown: 1.476mm (0.0581")

ACL Race Series bearings combine advanced metallurgy with precision engineering to deliver the endurance and performance demanded by high-performance street builds, tuned engines, and competitive motorsports applications. Ideal for engine rebuilds where superior quality and increased bearing capacity over OEM components are required.