ACL Bearings 5M2167HX-STD Race Series Main Bearing Set Standard Size

The ACL Bearings 5M2167HX-STD is a high-performance Race Series main bearing set engineered for Ford 1.6L to 2.0L OHC engines, including the legendary Ford Cosworth YB and N5 variants found in the Sierra and Escort Cosworth. These tri-metal main bearings are designed to withstand the extreme demands of high-RPM racing and performance applications.

Advanced Race Series Features:

• High-strength overlay plate with reduced thickness for superior fatigue resistance
• Tri-metal construction (F780 material) for exceptional durability under extreme loads
• Elimination of flash plating on bearing backs improves heat transfer and maximizes grip between bearing and housing
• Increased eccentricity compensates for bore distortion at high RPM and assists hydrodynamic oil film formation
• 3/4 grooved design optimizes bearing load carrying surface area and oil flow to connecting rod bearings
• HX designation provides an additional 0.001" (0.025mm) oil clearance compared to standard H-series bearings

Technical Specifications:

• Bearing Size: Standard (STD)
• Bearing Material: F780 Tri-Metal
• Shaft Size Range: 2.2437" to 2.2441" (56.99mm to 57.00mm)
• Housing Bore Range: 2.3866" to 2.3874" (60.62mm to 60.64mm)
• Wall Thickness at Crown: 0.0710" (1.803mm) maximum
• Overall Length: 0.935" (23.75mm)
• Oil Clearance: Standard with HX extra clearance (.0005" thinner wall than H-series)

ACL Race Series bearings are trusted by professional engine builders worldwide and have proven themselves in championship-winning engines across multiple racing disciplines, from drift and rally to NASCAR and NHRA competition. The unique combination of advanced metallurgy, precision engineering, and race-proven design provides the endurance and performance capability demanded by serious motorsports applications.