ACL Race Bearings - Mains (Nissan SR20DET Non-GTiR) | Niced Up

Upgrade your bottom end with the ACL Race Series Main Bearings Set (Part # 5M2964H-STD) for Nissan SR20DET Non-GTiR engines (S13, S14, S15 Silvia, 180SX & Sentra SE-R). The unique combination of design, metallurgy, and engineering put into ACL Race Bearings comes together to deliver what drivers expect from high-performance trimetal engine bearings under extreme operating conditions.

Featuring high-strength copper-lead construction with hardened steel backing and eliminated flash plating for enhanced thermal transfer, these main bearings ensure maximum journal stability and fatigue resistance under high boost.

Key Features & Benefits:

• Trimetal Construction: High load capacity copper-lead structure with galvanic overlay for exceptional wear and seizure resistance.
• Precision Tolerances: Strict wall thickness control maintains precise oil clearances for optimal journal lubrication.
• Enhanced Heat Dissipation: Eliminated flash plating improves thermal transfer directly into the engine block main housing.

Technical Specifications:

• Bearing Type: Main Engine Bearings (Standard Size - STD)
• Material: Tri-Metal Alloy (Copper-Lead / Steel Backed)
• Warranty: ACL Performance Limited Manufacturer Warranty
• Brand: ACL Performance