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ACL
ACL Main & Conrod Bearing Set Standard Size For 2015-20 Honda Civic K20C1 Type R
#4B1972H-STD & 5M1985H-STD

Item Description

BRAND NEW IN BOX

#4B1972H-STD

ACL Performance offers Race Series rod bearing sets for a wide range of vehicles. These high performance tri-metal engine bearings are designed to withstand higher RPM conditions. They feature a high-strength overlay plate with reduced thickness for improved fatigue properties. Select the crankshaft undersize and quantity recommended for your year/make and engine application.

Additional details:

* Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
* Increased crush for improved bearing retention
* Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing
* Increased eccentricity to compensate for bore distortion at high RPM and to assist in the formation of hydrodynamic oil films
* 3/4 in. grooved main bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings
* Tight consistent wall tolerances to help you maintain consistent clearances
* Enlarged ID chamfers on bearing edges (where required) to accommodate large fillet radius on performance crankshafts

  • UPC:9315726391440
  • Bearing Usage:Performance
  • Engine Crankshaft Undersize (in.):Stock
  • Engine Crankshaft Undersize (mm):Stock
  • Bearing Material:Tri-metal copper-lead alloy
  • Dowel Pin Hole:No
  • Narrow Bearing:No
  • Quantity:Sold as a set of 4.


#5M1985H-STD

ACL Performance Race Series main bearing sets deliver everything performance bearings should be by utilizing design, metallurgy, engineering, precision quality control, and of course, years of knowledge and experience.

Main bearings feature multi-layered tri-metal copper alloy construction that blends characteristics to provide high strength and excellent seizure resistance. They are manufactured to exact tolerances ensuring a reliable fit and helping to maintain consistent clearances. Main bearings are augmented with extended grooves, as well as other bearing enhancements, like increased crush, bearing eccentricity, and enlarged I.D. chamfers.

ACL Performance Race Series main bearing sets are produced in standard and extra clearance versions, with or without friction reducer coating, and with modifications to meet specific build requirements, such as narrowed bearings that permit additional edge clearance when running crankshafts with exceptionally large fillet radii.

In the heat of competition proven technology always comes through. The choice for your build should always be ACL Performance Race Series engine bearings. Choose the main bearing set designed for your vehicle.

  • UPC:9315726453827
  • Bearing Usage:Performance
  • Engine Crankshaft Undersize (in.):Stock
  • Engine Crankshaft Undersize (mm):Stock
  • Grooved Bearing:Yes
  • Groove Location:Upper and lower
  • Groove Style:3/4
  • Thrust Bearing Oversize:Stock
  • Bearing Material:Tri-metal copper-lead alloy
  • Quantity:Sold as a set of 5.



Vehicle Fitments

15-20 Honda Civic K20C1 Type R

Product Features

High performance Trimetal engine bearings

Designed to withstand higher RPM conditions

High strength overlay plate with reduced thickness for improved fatigue properties


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