If you're looking to push your engine to the limit, the ACL Race Series Engine Bearings are definitely worth a look. These bearings are crafted with a solid mix of design, metallurgy, and engineering, making them a go-to choice for anyone who craves high performance. They’re built to handle those higher RPMs that come with spirited driving, so you can really feel the difference when you hit the gas.

One of the standout features is the high-strength overlay plate, which is thinner than what you might find in standard bearings. This isn’t just for show; it actually improves fatigue properties, so you can count on these bearings to last during those intense runs. Plus, all the rod bearings come with hardened steel backs, which really helps with support and retention in the housing. You want your bearings to stay put, and these guys deliver.

What I really appreciate is the increased crush, which enhances bearing retention even further. And forget about flash plating on the backs; that’s been eliminated to boost heat transfer and maximize grip. When you’re pushing your engine hard, every little detail counts, and this one helps keep everything running smoothly.

The design also takes into account the realities of high RPM driving. With increased eccentricity, these bearings compensate for any bore distortion, helping to form those all-important hydrodynamic oil films. And if you’re running a performance crankshaft, the enlarged ID chamfers on the edges will accommodate larger fillet radii without a hitch.

Now, let’s talk specs. These bearings come in various sizes—STD, .025, .25, and .50—so you can find the perfect fit for your setup. The oil clearance is standard, and they feature identical halves, which simplifies installation. Made from tri-metal hardened steel backs, they’re designed to withstand the rigors of performance driving.

• Min Std Shaft Size: 1.8892 in / 47.985 mm
• Max Std Shaft Size: 1.8898 in / 48 mm
• Min Std Tunnel Size: 2.048 in / 52.02 mm
• Max Std Tunnel Size: 2.0492 in / 52.05 mm
• Max Wall at Crown: 0.0788 in / 2.001 mm
• Max Overall Length: 0.7835 in / 19.9 mm

These bearings fit a range of popular applications, including the Toyota Corolla from 1983 to 2019 and the Toyota MR2 from 1984 to 1999. If you have a 4AGE/4AGZE (1.6L) engine, the 0.025 oversized high-performance main bearing set is a solid choice.

In short, if you’re serious about performance and need bearings that can keep up, the ACL Race Series Engine Bearings are definitely worth considering. They’re built to last and designed to perform, making them an excellent investment for any enthusiast.