ACL Race Series Engine Bearings - 5M2747A-.25

When it comes to upgrading your engine's performance, the ACL Race Series Engine Bearings 5M2747A-.25 stand out as a top choice for serious Nissan enthusiasts. Engineered with a unique blend of design, metallurgy, and precise engineering, these Trimetal engine bearings are built to handle the rigors of high RPM conditions, making them ideal for your Nissan Altima (1994-2017), Frontier (1998-2018), or Xterra (2000-2015).

Why Choose ACL Race Series Engine Bearings?

These bearings are not just about numbers; they’re about real-world performance. Designed for drivers who push their vehicles to the limit, the ACL Race Series delivers the reliability and strength needed for both street and track applications. Here’s what makes them a must-have:

• High Strength Overlay Plate: Reduced thickness enhances fatigue resistance, ensuring longevity even under demanding conditions.
• Hardened Steel Backs: Provides exceptional support for the bearing lining, improving retention within the housing.
• Increased Crush: Optimizes bearing retention, keeping your engine running smoothly.
• No Flash Plating: This design choice improves heat transfer, maximizing grip between the bearings and their housing.
• Increased Eccentricity: Compensates for bore distortion at high RPMs, promoting the formation of hydrodynamic oil films.
• 3/4 Grooved Main Bearings: Enhances load-carrying surface area and oil flow to conrod bearings, ensuring efficient lubrication.
• Tight Wall Tolerances: Maintains consistent clearances for optimal performance.
• Enlarged ID Chamfers: Accommodates large fillet radii on performance crankshafts, providing a perfect fit.

Technical Specifications

• Size: STD, 0.25, 0.50, 0.75, 1.0
• Oil Clearance: Standard
• Half Type: Identical Halves
• Material: Tri-metal Hardened Steel Backs
• Min Std Shaft Size: 2.3607" / 59.962 mm
• Max Std Shaft Size: 2.3612" / 59.975 mm
• Min Std Tunnel Size: 2.5062" / 63.659 mm
• Max Std Tunnel Size: 2.5068" / 63.672 mm
• Max Wall at Crown: 0.0722" / 1.835 mm
• Max Overall Length: 0.7480" / 19mm

Fitment

These bearings are specifically designed to fit the following Nissan models:

• Nissan Altima (1994-2017)
• Nissan Frontier (1998-2018)
• Nissan Xterra (2000-2015)

Customer Feedback

Owners of the Nissan Frontier have reported significant improvements in engine response after installing these bearings. One user noted, "After upgrading to the ACL Race bearings, my 2015 Frontier feels more alive, especially at higher RPMs. The installation was straightforward, and I can feel the difference during acceleration."

Take your Nissan's performance to the next level with ACL Race Series Engine Bearings. Designed for those who demand the best, these bearings will ensure your engine operates at peak efficiency, whether on the street or the track.