Eagle Rods Mazda Miata NA NB (1.6/1.8 B6/BP engines) CRS5233M3D

Fitment Information Mazda Miata (1.6/1.8 B6/BP engines) Specs Recommended up to 900hp length: 5.233 in. rod journal: 1.7700 in. housing bore: 1.8900 in. pin size: 0.787 in. big end width: 0.8580 in. pin end width: 0.8580 in. thickness above pin: 0.180 in. typical weight: 535g Product Description All Eagle H-beam rods are forged from certified 4340 chromoly steel. While a lot of companies make rods from this material, if you pay close attention, you will notice not all 4340 is the same. For instance, to be classified as "4340 steel" certain alloying elements must be present in certain percentages. AISI/SAE specifications call for 1.65% to 2.00% nickel content. While this seems like a small difference, understand that this is almost an 18% variation. 4340 steel with 1.65% nickel will act a little differently than 4340 steel with 2.00% nickel content. This is just one of many alloying elements involved in creating 4340 steel. Through extensive material testing, Eagle works closely wi