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ACL race main bearings for NA/NB

ACL race main bearings for NA/NB
ACL race main bearings for NA/NB
ACL race main bearings for your engine.

Availability:
ACL Race main bearing set, -0.025 mm: out of stock. Sign up to get notified when this product is back in stock.
ACL Race main bearing set, stock size: 22 in stock
ACL Race main bearing set, 0.50 mm: 4 in stock
ACL Race main bearing set, 0.25 mm: 2 in stock
ACL Race main bearing set, 0.025 mm: 2 in stock

Description

Details

Main bearings for 1990-05 Miata engines. These are quality ACL race bearings, for maximum strength inside maximum horsepower engines.
 
 Available in stock, 0.25mm (0.010") or 0.50mm (0.020") oversize. They also come in 0.025mm (0.001") oversize.
 
 Included in our engine rebuild kits.

Crank measurements in mm and inches

  • Stock = 49.938-49.956 / 1.9661-1.9667
  • .25 / .01 = 49.704-49.708 / 1.9569-1.9570
  • .50 / .02 = 49.454-49.458 / 1.9470-1.9471
Additional Information

Additional Information

Part number 04-66100
TÜV approval available No
Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004 (non-MSM), 2005 (non-MSM), MSM
Manufacturer ACL
Flyin' Miata exclusive No
Fits Exocet? Yes
Proposition 65 Warning: Cancer and reproductive harm
California emissions No
Reviews
Instructions
Instructions for this part are not currently available online.

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