ACL Audi TTRS 2480cc Turbo 5cyl 0.25 Oversized High Performance Main Bearing Set

When you're building or rebuilding a high-performance engine, especially one like the Audi TTRS 5-cylinder turbo, the main bearings are critical. These ACL 6M5563H-.25 bearings are a high-performance option designed to handle the increased stresses of a modified or performance-tuned engine. They are a 0.25mm oversized set, meaning they're intended for crankshafts that have been machined down to match this specific size, offering a fresh, tight fit within the engine block's main journals.

ACL has a solid reputation for making well-built engine components. These main bearings are constructed with advanced materials and a design that helps manage oil flow effectively, which is crucial for keeping high-output engines cool and lubricated under demanding conditions. The 0.25mm undersize is a common machining size for performance builds, allowing for a precise fit and optimal oil clearance when paired with a reconditioned crankshaft. This set is a popular choice for tuners looking to ensure the longevity and reliability of their modified 5-cylinder engines.

This set is designed for specific Audi and Volkswagen models equipped with the 2.5L 5-cylinder turbo engine. Make sure to verify your vehicle's fitment and confirm that your crankshaft has been machined to a 0.25mm undersize before ordering. Proper installation, including correct oil clearances and torque specifications, is essential for engine health.