All "ESP" Rods are manufactured from a TWO-PIECE FORGING. The forging process forces the grain into the shape of a connecting rod, resulting in a superior fatigue life. The rod cap is forged separately so that the grain runs perpendicular to the load forces, which strengthens the rod. Many aftermarket rods are manufactured from 4340 steel. 4340 specs allow a range of different materials to achieve the desired results. Although it is a more expensive process, all "ESP" 3-D Rods also include higher content of nickel and chrome, which increases the strength and fatigue life without making the rod brittle. Extensive testing has proven our two-piece forging to be superior to any one-piece forging on the market!

Part #	Application	Notes
CRS5290H3D	B16a	stock dimension fitment for Honda B16 engines (except JDM B16B)
CRS5394A3D	B18a/b (LS), B20b/z	stock dimension fitment for Honda B18A/B, and B20B/Z engines
CRS5430A3D	B18c1 - B18c5	stock dimension fitment for Honda B18C engines (including Type R)
CRS5394H3D	D16 & ZC	stock dimension fitment for Honda D16 engines and ZC (some minor clearancing at the base of the cylinder walls may be necessary. This is most common on older ZC, D16A, and D16Z6 blocks)
CRS5470K3D	K20A2	Honda K20a2 (RSX Type S)