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Cosworth Main Bearing Set Size 0, 1, and 2

Cosworth Main Bearing Set Size 0 Subaru Turbo Models (inc. 2002-2014 WRX / 2004-2015 STI)

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*All other Cosworth products are available through WORKS. Please call 707-933-3893 or email
Our Price: $199.99

Product Code: COS.COS1-20007172_7173_7174

Bearing Size*:

Description Technical Specs Applications

Engine bearings are crucial for the engine to perform effectively. During the upgrade process, this vital component is rarely the first choice. Generating less heat, a higher performing, multi-layer engine bearing will simply perform better. Cosworth's uniquely designed, Main Bearing Set combines design, metallurgy, and engineering to provide continuous performance under the most extreme conditions.

Mixing and matching the bearing half-shells will provide incremental changes in the amount of oil clearance. Measuring the bearing clearances is crucial prior to selecting the appropriate bearing size to ensure optimal performance.

  • All

  • main bearings come with a hardened steel backing with an increased crush
  • for better retention, tight, consistent wall tolerances for a precision
  • fit and a 3/4in grooving to provide optimal oil supply. With each set,
  • the reduced thickness of the high strength overlay plate allows for
  • better oil control creating less friction allowing for more heat
  • transfer eliminating flash plating.

    The bearings come in three

  • different sizes to provide optimal engine performance. Formerly known as
  • "RACE", the size 2 bearing allows for .025mm or .001 more oil clearance
  • than the size 1 bearing. Size 0 will provide .025 or .001" less
  • clearance than the size 1 bearing also formerly known as the "STD".
  • Unfortunately, we do not offer the undersized ground crankshaft bearings
  • at this time.

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