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