General description The 4340 Connecting Rods for MG MGB GT 1.8 are high-performance conrods designed specifically for MGB 4-cylinder engines. Made from forged 4340 aircraft chrome moly steel, these rods are engineered for racing applications, providing exceptional strength and durability. Each set includes four connecting rods and ARP 2000 bolts, which are rated at 220,000 psi, with an option to upgrade to ARP L19 bolts rated at 260,000 psi. Technical specifications Type: Forged 4340 aircraft chrome moly steel Quantity: 4 pieces Advertised horsepower rating: 200 HP/piece Top acceleration: 9000 rpm Center to center length: 165.1 mm / 6.5" Big end diameter: 51.338 mm / 2.021" Small end diameter: 20.62 mm / 0.812" Big end width: 25.35 mm / 0.998" Small end width: 25.35 mm / 0.998" Package size: 28 cm x 21 cm x 10 cm Installation Professional installation is highly recommended to ensure optimal performance and reliability. Usage These connecting rods are suitable for MG MGB roadster