ACL Race Series Trimetal Engine Bearings - Part #4B1293H-.025

If you're looking to push your engine to its limits, the ACL Race Series Trimetal Engine Bearings are engineered to meet the demands of high-performance driving. Designed for durability and reliability, these bearings are an essential upgrade for those who want to maximize their engine's potential. Whether you own a Hyundai Genesis (2009-2016), Hyundai Sonata (2005-2018), or Kia Optima (2001-2018), these bearings are specifically tailored to fit your vehicle's needs.

Key Features

• High-strength overlay plate with reduced thickness enhances fatigue resistance, making these bearings a solid choice for high RPM applications.
• Hardened steel backs on all rod bearings provide superior support for the bearing lining, ensuring they stay firmly in place during intense driving.
• Increased crush improves bearing retention, preventing any unwanted movement under high-stress conditions.
• Elimination of flash plating on the back of the bearings boosts heat transfer, allowing for better thermal management and grip within the housing.
• Enhanced eccentricity compensates for bore distortion at high RPM, promoting the formation of hydrodynamic oil films for optimal lubrication.
• 3/4 grooved main bearings optimize load-carrying surface area and oil flow to the conrod bearings, crucial for maintaining performance during aggressive driving.
• Tight and consistent wall tolerances ensure you maintain precise clearances, which is key for engine longevity and performance.
• Enlarged ID chamfers on bearing edges accommodate large fillet radii on performance crankshafts for a perfect fit.

Technical Specifications

• Type: Trimetal with Hardened Steel Backs
• Oil Clearance: Standard
• Half Type: Identical Halves
• Min Std Shaft Size: 1.8879 in / 47.954 mm
• Max Std Shaft Size: 1.8887 in / 47.972 mm
• Min Std Tunnel Size: 2.0079 in / 51.000 mm
• Max Std Tunnel Size: 2.0086 in / 51.018 mm
• Max Wall at Crown: 0.0596 in / 1.513 mm
• Max Overall Length: 0.669 in / 17.00 mm

Fitment

These bearings are compatible with the following vehicles:

• Hyundai Genesis (2009-2016)
• Hyundai Sonata (2005-2018)
• Kia Optima (2001-2018)

Customer Feedback

Owners of the Hyundai Genesis have reported significant improvements in engine responsiveness after installing the ACL Race Series bearings. One Genesis owner mentioned, "After swapping out my stock bearings for the ACLs, I noticed a smoother power delivery and better oil pressure, especially during spirited drives." Another Sonata driver stated, "These bearings are a game-changer for my setup. The engine feels more alive, and I can push it harder without worrying about wear."

Upgrade your engine with the ACL Race Series Trimetal Engine Bearings and experience the difference in performance and reliability. Designed for enthusiasts who demand the best, these bearings will help you get the most out of your vehicle.