10 Best Acl Race Bearings 2026

⚡ Quick Verdict

📋 How We Evaluated

Evaluation focused on build quality, material durability, and specific engine compatibility. Performance under high loads and ease of installation were also critical factors. Suitability for daily driving versus track use determined the final ratings.

Compatibility	Toyota 2JZ-GTE/GE Supra IS300 SC300 GS300
Set Type	Race Rod Main Thrust
Grooving	3/4 grooving on Main Bearings
Material	Race Series

What We Found

This ACL set targets the legendary 2JZ-GTE engine. It includes rod, main, and thrust bearings for Supras and IS300s. The main bearings feature 3/4 grooving for optimal oil flow. This design reduces heat and increases bearing life.

Who It’s For

This kit is perfect for 2JZ engine builds. It suits Supra owners and Lexus IS300 enthusiasts. It is ideal for those seeking maximum performance and reliability.

Compatibility	Acura Honda B16A B18A B18B B20B B20Z
Set Type	Rod Main Thrust Washer
Material	Race Series Tri-metal
Substitution	King thrust bearing

What We Found

ACL Race Series bearings provide a robust solution for B-series engines. The standard size fits a wide range of Honda and Acura applications. Note that thrust washers may be substituted with King bearings due to stock shortages. This set includes rod, main, and thrust bearings for comprehensive engine protection.

Who It’s For

This kit suits Honda Civic and Acura Integra owners rebuilding B16A, B18A, or B20B engines. It offers excellent value for budget-conscious performance enthusiasts. The set ensures proper clearance for high-compression builds or mild upgrades.

Compatibility	Nissan RB20DET RB25DET RB30/RD28
Set Type	Main Bearing Set
Feature	Elimination of flash plating

What We Found

ACL Race main bearings for Nissan RB engines feature hardened steel backs. This design improves support for the bearing lining. The elimination of flash plating aids heat transfer. It fits RB20, RB25, and RB30 engines.

Who It’s For

ACL 4B8351H-STD Compatible with Mazda 4 B6/BP/BP-T Race Series Size: STD Race Series Rod B is best for shoppers who want a dependable match without overcomplicating the decision.

It is worth shortlisting if its size, feature set, warranty notes, and recent buyer feedback line up with the way you plan to use this Best ACL Race bearings.

Compatibility	1994-01 Acura Integra B18C1 B18C5
Set Type	Race Rod Main Thrust
Condition	Brand New in Box
Substitution	King thrust bearing

What We Found

ACL Race bearings fit the high-revving B18C1 and B18C5 engines found in Type R and Type S Integras. The standard size fits 1994 to 2001 models. These bearings are new and boxed. However, thrust bearings are often out of stock and replaced by King.

Who It’s For

This kit is essential for Integras with B18C1 or B18C5 engines. It benefits owners rebuilding high-performance engines for track use. It offers peace of mind for critical engine components.

Compatibility	Honda D16A1 D16Y5 D16Y7 D16Y8 D16Z6
Set Type	Rod Main Thrust
Sizes	Standard
Substitution	King thrust washer

What We Found

This ACL set targets the popular D16 engine family. It covers D16A1, D16Y5, and D16Z6 variants effectively. The standard size ensures a direct fit for most rebuilds. Expect potential substitutions for thrust washers as well.

Who It’s For

Perfect for D-series owners needing a replacement bearing kit. This set is ideal for restoring a stock D16 engine or preparing it for mild tuning. It provides essential protection against wear.

Compatibility	Chevy 262-350 Race Series
Set Type	Main Bearing Set
Size	Standard
Origin	Australia

What We Found

ACL Race Series bearings fit small block Chevy engines from 262 to 350 cubic inches. This set includes standard main bearings. The product is made in Australia. It is a reliable choice for classic Chevy performance.

Who It’s For

This kit is for Chevy enthusiasts rebuilding small block engines. It suits street rods and classic muscle cars. It provides essential protection for high-compression builds.

Compatibility	Nissan RB30/RD28 Diesel
Set Type	Main Bearing Set
Series	Race Series
Application	Diesel / Turbo Diesel

What We Found

This set provides main bearings for Nissan RB30 and RD28 engines. It is part of the ACL Race series. The design focuses on durability and reliability. It is suitable for diesel and turbo diesel applications.

Who It’s For

ACL Race Main Bearings Set for Nissan RB20DET RB25DET RB25DE RB25 7M2394H-STD is best for shoppers who want a dependable match without overcomplicating the decision.

It is worth shortlisting if its size, feature set, warranty notes, and recent buyer feedback line up with the way you plan to use this Best ACL Race bearings.

Compatibility	K20A2 K24A1 K24A2 K20Z1 K24A4
Kit Type	Custom Bearing Kit
Size	Standard
Origin	Australia

What We Found

Boost Projects offers a custom kit for K-series engines like the RSX Type S. This set includes rod, main, and thrust washers in standard size. The kit is made in Australia. Note that it does not fit the K20A3 engine found in the base model Civic Si.

Who It’s For

This kit is designed for K20A2 and K24A1 owners performing engine swaps or rebuilds. It is perfect for those prioritizing quality control from Boost Projects. It suits both street and track applications.

Compatibility	Mazda 4 B6/BP/BP-T
Set Type	Main Bearing Set
Technology	Staticide
Origin	Made in China

What We Found

ACL Staticide ACL 5M8309H-STD Main Bearing Set stands out as a practical Best ACL Race bearings option because it gives buyers a clear mix of listing-backed features, current Amazon availability, and everyday usability.

The most important details to compare are Fit type: Clevite ACL King, Package Dimensions: 3.0 L x 11.1 H x 6.8 W (centimeters), Made in China. It should be judged by how well those details match your setup, budget, and expectations instead of by title claims alone.

Who It’s For

This is for Mazda 4 cylinder engines like the Miata or 626. It is suitable for performance or restoration builds. It offers specific protection against friction.

Fit Type	Clevite ACL King
Set Type	Main Bearing Set
Package Weight	0.61 pounds
Dimensions	2.4 L x 16.3 H x 7.3 W

What We Found

This set provides main bearings for various Acura and Honda applications. It is labeled as a Clevite ACL King fit type. The package includes standard main bearings. It is a smaller package compared to full bearing sets.

Who It’s For

This is for mechanics or DIYers needing just main bearings. It suits general Honda and Acura engine maintenance. It is not a complete kit for a full rebuild.

What to Look For Before Buying

Buyers should prioritize material composition and specific engine compatibility. The bearing size must match the engine block. Check for thrust washer availability before purchasing.

Check Engine Compatibility

Ensure the bearing set matches your engine code exactly. Using the wrong size can cause catastrophic engine failure. Verify the application list before buying.

Value Material Quality

Look for tri-metal designs that offer heat dissipation. Hardened steel backs provide better support for high loads. This ensures the engine lasts longer under stress.

Rating Manufacturer Reputation

ACL and King are trusted names in the industry. Check for customer reviews to gauge real-world performance. A high rating often indicates reliable quality.

Verify Thrust Washer Substitutions

Many sets substitute King bearings due to stock shortages. Confirm if this substitution affects your build. Always have a backup plan for bearing availability.

Frequently Asked Questions

What is tri-metal construction?

Tri-metal bearings consist of steel, copper, and aluminum. This layering provides strength and heat resistance. It prevents wear during high-performance operation.

Why are thrust washers substituted?

Manufacturers often substitute King bearings due to stock shortages. This ensures the customer receives a complete set. The King bearings are functionally equivalent.

How do I identify my engine size?

Check the engine code stamped on the block or head. You can also look at the vehicle registration. This code determines the correct bearing size.

What does Standard Size mean?

Standard size refers to the factory clearance. It is the baseline for most stock engines. It works well for engines without significant wear or modifications.

Can I reuse old bearings?

No, old bearings should always be discarded during a rebuild. They may have microscopic cracks or wear. New bearings ensure proper clearance and engine health.

🎯 Final Verdict

The ACL Race bearing set for B-series engines stands out as the top choice. It offers excellent value for Honda and Acura owners. For those with a 2JZ engine, the specific set with 3/4 grooving is the runner-up. Always verify engine compatibility before purchasing.

Ensure you have a plan for thrust washer substitutions.