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ACL race main bearings for NA/NB

ACL race main bearings for NA/NB

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$86.99 USD
$86.99 USD
Sale Sold out
Option 1

SKU

04-66100~25

Instructions

Instructions are not currently available.

Data

Fits: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2000, 2001, 2002, 2003, 2004, 2004 MSM, 2005, 2005 MSM

Emissions: Emissions do not apply.

There are no shipping restrictions on this item.

Warranty: none

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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

Please note that we can't accept returns on bearings that have been removed from the plastic wrap.

*0.50mm & 0.025mm sizes are unavailable until further notice.