ACL 5M8309A-.25 Race Series Engine Bearings for Subaru Legacy

If you’re a proud owner of a Subaru Legacy (1990-2017), you know that performance is key—especially when it comes to your engine's health. The ACL 5M8309A-.25 Race Series Engine Bearings are designed specifically for high-performance applications, making them an essential upgrade for drivers looking to push their engines to the limit.

Why Choose ACL Race Series Engine Bearings?

The unique combination of advanced design, top-notch metallurgy, and rigorous engineering ensures that these Trimetal engine bearings can handle the demands of higher RPM conditions. Whether you're hitting the track or just want a more reliable daily driver, these bearings are built to perform.

Key Features:

• High-strength overlay plate with reduced thickness enhances fatigue properties, ensuring durability under stress.
• Hardened steel backs on all rod bearings improve support for the bearing lining and enhance retention in the housing.
• Increased crush improves bearing retention, preventing any unwanted movement during operation.
• Flash plating has been eliminated on the back of the bearings to optimize heat transfer and maximize grip in the housing.
• Designed with increased eccentricity to counteract bore distortion at high RPMs, promoting effective hydrodynamic oil films.
• 3/4 grooved main bearings optimize load carrying surface area and oil flow to the connecting rod bearings.
• Tight, consistent wall tolerances help maintain precise clearances for better performance.
• Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, ensuring a perfect fit.

Technical Specifications:

• Size: STD, .025, .25
• Oil Clearance: Standard
• Half Type: Identical Halves
• Material: Tri-metal Hardened Steel Backs
• Min Standard Shaft Size: 2.3616 in / 59.984 mm
• Max Standard Shaft Size: 2.3622 in / 60 mm
• Min Standard Tunnel Size: 2.5197 in / 64 mm
• Max Standard Tunnel Size: 2.5205 in / 64.02 mm
• Max Wall at Crown: 0.0789 in / 2.005 mm
• Max Overall Length: 0.748 in / 19 mm

Customer Feedback:

Subaru Legacy owners have reported significant improvements in engine performance after installing the ACL 5M8309A-.25 bearings. One owner noted, “After upgrading to these bearings, my 2015 Legacy feels more responsive at higher RPMs, and I haven’t noticed any oil pressure drops even during spirited driving.”

Upgrade your Subaru Legacy’s engine with the ACL 5M8309A-.25 Race Series Engine Bearings and experience the difference in performance and reliability. These bearings are a proven choice for anyone serious about their vehicle's performance.