The ACL Race Series Main Bearing Set in STD Size is a high-performance crankshaft bearing set designed for GTiR engines with 0.001" extra oil clearance. Made from Race Series Tri-Metal material, this set includes bearings for positions 1 through 5 with a standard shaft diameter of 2.1636"/2.1646" (54.956mm/54.980mm) and a maximum wall thickness of 0.0774" (1.967mm). The housing bore measures 2.3206"/2.3216" (58.944mm/58.968mm) with a maximum length of 0.7520" (19.100mm). Thrust washers are also included in this set (1T2964-STD).

ACL Race Series has been a leading manufacturer of precision engine bearings for over 70 years in Launceston, Tasmania, Australia. With a strong reputation for quality, innovation, and performance, ACL has provided OEM and aftermarket solutions for the automotive industry worldwide. The ACL Race Series Performance Engine Bearings have a rich history in motorsport, from Formula 1 to Australian Supercars, drag racing, speedway, drifting, and rally. Engine builders trust ACL Race Series bearings for their robust metallurgy and precision engineering.

With over 200 applications covering a wide range of performance engines, ACL continues to expand its range to accommodate new releases in Australian, American, Japanese, Korean, and European vehicles. The company's vertical integration allows for complete control over product design, manufacturing processes, and quality management systems, ensuring that every ACL bearing meets the highest standards of ISO certification for quality, environmental, and occupational health and safety management. Choose ACL Race Series bearings for top performance and reliability in your engine build.