Vitara pistons are an excellent upgrade for the D15B, however the annoying part is having to use a connecting rod that wasn’t meant for this application; they are too large, heavy, and require engine builders to perform irreversible modification to their engine block.  

SpeedFactory Racing developed H-beam connecting rods that are tailor made for Vitara pistons in a JDM D15B SOHC VTEC. They clear the sleeves & girdle – no notching required! These rods are lightweight, strong, and most importantly they stay in the spirit of the Vitara piston upgrade by being equally as straight-forward to install. 

Forged 4340 chromoly construction provides outstanding durability. Each rod is CNC machined, magnafluxed, heat treated, and shot-peened to relieve stress in the metal. Precision alignment dowels are used to correctly locate the rod caps, maintain big-end bore size, and eliminate cap walk. They feature bronze alloy pin bushings for floating wrist pins and come standard with 220,000 psi rated 3/8” ARP2000 rod bolts. 

The custom rod length brings the Vitara pistons to the proper deck height, meaning they will have the correct compression for forced induction applications (see compression ratio info based on D-series head). 

Instructions and ARP Lube are included.   

Recently viewed