ACL Race Series HX Rod Bearings – STD Size w/ Extra Oil Clearance – Fits Honda K20/K24 Engines – 4B1972HXD-STD

ACL Race Series HX Rod Bearings provide increased oil clearance (approx. -0.025mm) for high-performance and high-RPM Honda K-series builds. Ideal for engines running tighter tolerances or aftermarket crankshafts, this standard-size set is designed for consistent lubrication, improved oil film stability, and reduced friction under extreme conditions. Engineered with a trimetal structure and race-proven features, they’re built for serious power and durability.

Key Features

• HX variant: Extra oil clearance for high-performance tolerance control

• Trimetal construction with high-strength overlay for enhanced fatigue resistance

• Standard size with -0.025mm oil clearance increase

• Hardened steel backing for housing retention and bearing support

• Increased crush and eccentricity to combat bore distortion at high RPM

• No flash plating for better heat transfer and housing grip

• Enlarged chamfers for compatibility with high-performance crankshafts

• Tight tolerances for consistent oil clearance

• Ideal for turbocharged, road race, or endurance engine applications

Technical Details

• Bearing Type: Connecting Rod Bearings

• Size: STD (with additional oil clearance)

• Oil Clearance Increase: Approx. -0.025mm

• Weight: 0.20 kg

• Half Type: Identical halves

• Application: K-series Honda/Acura engines

Fitment Information
Direct fit for many Honda and Acura K-series engines, including:

• Honda Civic Type R – FK2, FK8, FL5 (K20C1)

• Honda Integra – DC5 (K20A2, K20Z1)

• Honda Accord – CM, CL, CN (K24A4, K24A8, K24A3)

• Honda CR-V – RD, RE, RM (K24A1, K24Z1)

• Honda Element / Odyssey / FR-V / Stepwgn / Elyssion – K24A3, K24A4, K24A8

• Acura RSX – DC5 (K20A2)

Always confirm exact engine code and intended oil clearance specification before ordering.

What’s Included

• (1) Set of ACL Race Series HX rod bearings – STD size (with extra oil clearance)