General description The Forged 4340 Connecting Rods are designed for high-performance applications in various Mazda and Kia models. Made from high-quality forged SAE 4340 chrome moly steel, these connecting rods provide exceptional strength and durability, making them ideal for racing. Each set includes four connecting rods and genuine ARP 2000 bolts, ensuring reliability under high-stress conditions. Technical specifications Center to center length: 133mm / 5.2362 in Big end diameter: 48mm / 1.8898 in Small end diameter: 20mm / 0.7874 in Big end width: 21.84mm / 0.8598 in Small end width: 21.84mm / 0.8598 in Weight tolerance: Balanced to +/- 1 gram per set Advertised horsepower rating: 200HP/piece Big end bores honed to a +/- .0004 in tolerance Compatibility and accessories Compatible with Mazda B6 1.6 / B6F engines Fits various models including Mazda 323, Miata/MX-5, Xedos 6, and Kia Mentor Includes genuine ARP 2000 bolts (optional upgrade to ARP L19 bolts available) Installation