ACL Race rod bearings are tri-metal engine bearings designed for operating conditions with higher RPM. The set includes ACL Race Series con rod bearings.
The construction combines a high-strength overlay plate with reduced thickness, hardened steel backs and increased crush for improved bearing retention in the housing. Increased eccentricity helps compensate for bore distortion at high RPM and assists in forming hydrodynamic oil films.
- Tri-metal construction with a reduced-thickness high-strength overlay plate
- Hardened steel backs for improved bearing lining support and retention in the housing
- Increased crush for improved bearing retention
- Elimination of flash plating on the back for improved heat transfer
- Increased eccentricity to compensate for bore distortion at high RPM
- Tight, consistent wall tolerances for consistent clearances
Suitable for: Mazda CX 7 I (ER).
Engines: Cosworth YB, L3-VDT (2.0L, L3-VDTMZR). Please check your vehicle’s engine code (registration document or VIN) before ordering; if in doubt, contact us and we will check for you.
Sizes
STD is the standard size for an unground crankshaft. Undersizes (−0.25 mm, −0.50 mm …) are for a reground crank, and “+0.025 mm clearance” (X) is for highly stressed engines. Your machine shop chooses the size after measuring.

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