ACL Race Series Main Bearing Set is the professional builder's choice for 2003+ Ford/Mazda 4-cylinder 2.0L/2.3L DOHC Duratec motors, delivering enhanced load capacity for engine upgrades and tuning. These multi-layered tri-metal copper alloy main bearings blend high strength with excellent seizure resistance under harsh conditions. They are manufactured to exact tolerances, ensuring reliable fitment and consistent clearances. Unlike standard bearings, this set is augmented with specific race enhancements, including extended oil grooves, increased crush, bearing eccentricity, and enlarged I.D. chamfers. ACL also produces these performance bearings in standard and extra clearance versions, some with modifications like narrowed bearings to accommodate crankshafts with large fillet radii. This proven technology ensures superior durability, stability, and precise oil flow where you need it most.
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