
4B1972HX-STD Race Connecting Rod Bearing Set, Extra .025 mm Oil Clearance, Standard, Honda K20A2 1998cc (Type R) Inline4 DOHC 4v
ACL Bearings 4B1972HX-STD Features:
Trusted by champions worldwide, ACL RACE Series Bearings are the choice for record-setting engines from sport compact to small block race machines. Engineered w/a unique blend of design, metallurgy, and precision manufacturing, these Bearings deliver unmatched durability and performance under extreme conditions.
- Width: 0.606 in.
- Outside Diameter: 2.0088 in.
- Outside Diameter: 2.008 in.
- Shaft Diameter: 1.8898 in.
- Shaft Diameter: 1.889 in.
- Grade Type: Performance
- Maximum Wall Thickness: 0.0585 in.
Unleash Unmatched RPM Performance with ACL Race-Series Connecting Rod Bearings
ACL Race-Series Connecting Rod Bearings bring race-tested durability, precision engineering, and state-of-the-art metallurgy into your high-performance build. Their trimetal design features a high-strength overlay plate with reduced thickness for improved fatigue resistance, backed by hardened steel for enhanced support and retention under extreme conditions. These bearings deliver when the going gets tough—on the street, the strip, or the racetrack. Available for various domestic and international applications.
ACL also offers versions with extra oil clearance (HX), optional dowel holes (HD), or both (HXD).
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If you demand uncompromising performance in your high-RPM build, the ACL Bearing Race-Series connecting rod bearings deliver precision, strength, and reliability every time. Engineered to handle extreme loads, these bearings are crafted with a trimetal overlay bonded to a hardened steel backer for maximum durability under heat and stress. The result is a bearing that tolerates friction, resists fatigue, and supports your engine through every rev—whether on the street, strip, or in competition.
These rod bearings offer several upgrades over conventional designs. Their reduced overlay thickness enables better heat dissipation and load distribution under high-stress operation. Available in options like HX (increased oil clearance) and HD (dowel-hole configurations), you can fine-tune fitment to match your application’s expectations. You can also piece together the differences in ACL race bearing vs standard units to see why this series is a favorite among engine builders.
Choosing ACL race bearings means choosing components with race-proven heritage. These components stand up to demanding environments where ordinary bearings might fail. When comparing acl race rod bearings against common replacement bearings, the improved metallurgy and engineering yield better longevity, reduced wear, and tighter tolerances under duress.
Whether rebuilding a daily driver or assembling a full-blown race engine, ACL’s Race-Series connecting rod bearings give you the confidence that your bottom end is protected. Take the next step: select your size, add to cart, and let your build benefit from race-tested foundation components built to perform.
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