
Description
The ACL Race Series Main Bearing Set (Part No. 1M2505H-STD-2) is engineered for the Nissan Skyline VQ35HR, VQ37VHR, and GT-R R35 VR38DETT. Built with advanced tri-metal construction, these bearings deliver strength, durability, and precision clearances required for high-RPM performance. ACL bearings are trusted worldwide for their fatigue resistance and reliability under extreme conditions.
Key Features and Benefits
-
High-performance tri-metal construction
-
Withstands high-RPM operating conditions
-
High-strength overlay plate with reduced thickness for fatigue resistance
-
Hardened steel backs for stability and retention
-
Increased crush for secure fitment in housing
-
No flash plating for better heat transfer and grip
-
Optimized eccentricity for bore distortion compensation and oil film stability
-
3/4 grooved design for oil flow and load distribution
-
Consistent wall tolerances for precise clearance control
-
Enlarged ID chamfers for compatibility with performance crankshafts
Technical Specs / Material Info
-
Sizes: STD-0, STD-1, STD-2, STD-3, STD-4
-
Tunnel (mm): 69.993 – 70.017
-
Shaft (mm): 64.951 – 64.975
-
Max. Length: 20 mm
-
Half Type: Upper & Lower
-
Note: Set contains one pair of bearings (order required number of pairs for complete set)
-
Weight: 0.09 kg
Vehicle Compatibility
Compatible with the following:
-
Nissan Skyline VQ35HR DOHC 24v
-
Nissan Skyline VQ37VHR DOHC 24v
-
Nissan GT-R R35 VR38DETT DOHC 24v Twin Turbo
Package Contents
-
One pair of ACL Race Series main bearings
(order multiple pairs as required for a complete engine set)
Installation Notes
-
Professional installation recommended
-
Confirm correct bearing grade before assembly
-
Ensure proper lubrication and clearance during installation
Emissions & Compliance
-
Not applicable (non-emissions-related component)
Documentation
-
Technical Bulletin: Grade selection
Unable to find satisfactory answers ?