Alright, let’s talk about these ACL Race Series Engine Bearings. If you’re pushing your engine hard—like, really hard—these bearings are built to handle it. They’re designed for those of us who live in the high RPM zone, whether you’re racing or just want that extra punch on the street. You can find them for a bunch of popular 4, 6, and 8-cylinder setups, so chances are, there's a fit for your ride.

What Makes These Bearings Stand Out?

• High Strength Overlay: The overlay plate is thinner but tougher, which means it can take a beating without giving up. This is all about reducing fatigue, so you can keep revving.
• Hardened Steel Backs: Every rod bearing comes with hardened steel backs. This not only supports the bearing lining better but also helps keep everything locked in place. No one wants a loose bearing, right?
• Increased Crush: They’ve upped the crush factor, which means better retention. These bearings are going to stay where they need to be, even under pressure.
• No Flash Plating: Forget about that flash plating on the back. This design improves heat transfer and makes sure the bearings grip well in their housing. That’s key for performance.
• Increased Eccentricity: This helps counteract bore distortion when you’re hitting those high RPMs. It also aids in forming those hydrodynamic oil films, which is crucial for keeping everything lubricated.
• 3/4 Grooved Main Bearings: These are designed to optimize the load-bearing surface area and ensure oil flows smoothly to the conrod bearings. More oil where it counts!
• Tight Wall Tolerances: You’ll appreciate the consistent wall tolerances that help maintain clearances. This is all about precision.
• Enlarged ID Chamfers: They’ve added larger chamfers on the edges to accommodate those performance crankshafts with big fillet radii. No more worrying about compatibility here.

Specifications You Should Know

• Size: STD, .025, .25
• Oil Clearance: Standard
• Half Type: Identical Halves
• Material: Tri-metal with Hardened Steel Backs
• Min Std Shaft Size: 1.8894in / 47.990 mm
• Max Std Shaft Size: 1.8898in / 48.000 mm
• Min Std Tunnel Size: 2.0079in / 51.000 mm
• Max Std Tunnel Size: 2.0087in / 51.020 mm
• Max Wall at Crown: 0.0587in / 1.490 mm
• Max Overall Length: 0.6142in / 15.60 mm

Fitment

If you’ve got a Toyota RAV4 from 1996 to 2017, these bearings are a perfect match for your 2AZFE (2.4L) engine. Specifically, check out the 4B8411A-.25 set for that 0.25mm oversized aluminum rod bearing set. It’s a solid upgrade if you’re looking to push your RAV4’s performance without breaking the bank.

So, if you’re serious about your engine and want something that won’t let you down when it counts, these ACL bearings are worth considering. They’ve got the specs and the durability to back it up.