If you're diving into the world of high-performance engines, you know the importance of solid bearings. That’s where the ACL Race Series Engine Bearings come into play. These aren’t just any bearings; they’re designed specifically for those who push their engines to the limit, whether you’re revving up a 4, 6, or 8-cylinder beast. Trust me, these guys can handle the heat.

What really sets these bearings apart is the mix of clever design and solid engineering. The high-strength overlay plate is thinner than what you might find in standard bearings, which actually boosts its fatigue resistance. This means you can push your engine harder without worrying about the bearings giving out on you.

One of the standout features is the hardened steel backs on the rod bearings. This isn’t just for show; it provides serious support for the bearing lining and helps keep everything in place. Plus, the increased crush improves how well the bearings stick to their housing, which is crucial during those high RPM runs.

They’ve also eliminated flash plating on the back, which might sound technical, but it really helps with heat transfer. Better heat management means better performance, and who doesn’t want that? And if you’re worried about bore distortion when you’re pushing those RPMs, the increased eccentricity helps form hydrodynamic oil films, keeping everything lubricated and running smoothly.

Now, let’s talk specifics. These bearings feature 3/4 grooved main bearings, which optimize the load-carrying surface area and improve oil flow to the conrod bearings. Consistency is key, and the tight wall tolerances help you maintain clearances that won’t let you down. Plus, the enlarged ID chamfers on the edges accommodate larger fillet radii on performance crankshafts, making installation a breeze.

Here’s a quick rundown of the specs you’ll want to know:

• Standard size with an extra 0.001" oil clearance
• Half type: upper & lower
• Made from tri-metal with hardened steel backs
• Min standard shaft size: 2.0450in / 51.942 mm
• Max standard shaft size: 2.0457in / 51.960 mm
• Min standard tunnel size: 2.2047in / 56.000 mm
• Max standard tunnel size: 2.2054in / 56.018 mm
• Max wall at crown: 0.0791in / 2.009mm
• Max overall length: 0.7087in / 18.00 mm

These bearings are a perfect fit for the Hyundai Genesis models from 2009 to 2016, specifically the G4KF 2.0T with the part number 5M1295HX-STD. If you’re serious about performance and want bearings that can keep up with your ambitions, these are worth considering. They’ve got the specs and the durability to handle whatever you throw at them.