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ACL Main Bearing Sets

ACL's main bearings are made of a softer metal so that you don't wear out your crank or engine block. Additionally, a thin layer of oil lubricates the connection between the bearings and the crank allowing the crank to "float" and reduce wear. Proper support via main bearings is crucial to prevent oscillations and wear that can damage the crankshaft and other components as the motor moves further out of balance.

Bearings with extra oil clearance will absorb the stress of higher horsepower motors greater, but will see increased wear during start up. We recommend these be purchased by experienced professionals only.


  • FITMENT:
  • Mazda Miata 1989-2005
ACL Mazda B6/BP/BP-T 1.6/1.8L Standard Size High Performance Main Bearing Set


  • FITMENT:
  • Mazda Miata 1989-2005
Description Part # MSRP Price Inventory  
B6/BP/BP-T Race Series Main Bearing Set (Standard) 5M8353H-STD $108.70 $82.61 5 available
ACL Mazda B6/BP/BP-T 1.6/1.8L .25mm Oversized High Performance Main Bearing Set


Description Part # MSRP Price Inventory  
B6/BP/BP-T Race Series Main Bearing Set (+.25mm Over) 5M8353H-.25 $108.70 $82.61 1 available
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510 Hyde Park, Doylestown, PA 18902
Tel: 215.489.2820  Fax: 215.489.2826
Hours:
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©2014 JSC Speed Inc.
All Rights Reserved.

510 Hyde Park
Doylestown, PA
18902

Tel: 215.489.2820
Fax: 215.489.2826