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Sealed Power Z4125MA - Sealed Power MA Series Main Bearings

  • Main Bearing Set;
  • Application Specific
  • Estimated Ship Date: 5/29/2012
 
BrandSealed Power
Manufacturer's Part NumberZ4125MA
Part TypeMain Bearings
Product LineSealed Power MA Series Main Bearings
Summit Racing Part NumberSLP-4125MA
 
Bearing UsageDirect replacement
Grooved BearingYes
Groove LocationUpper and lower
Groove StyleFull
Bearing MaterialTri metal copper-lead alloy
QuantitySold as a set of 5.
 

These Sealed Power MA Series main bearings can actually polish the journals on your crankshaft. That's because there's a small percentage of silicon mixed in with the aluminum and tin that make up the bearing-surface alloy. The silicon is there for wear resistance, but its toughness actually smoothes the journals of a crank whose surface hasn't been optimized! This special surface alloy is laid over a high-strength 1010 steel backing and delivers improved seizure and corrosion resistance, as well as better control of wall variance. It also helps to minimize debris embedding, which can score the crank's surface.

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