General description High-performance H-beam connecting rods designed specifically for Ford Pinto Cosworth YB 5.1 and Ford Sierra RS Cosworth. These rods are forged from 4340 aircraft chrome moly quality steel, ensuring exceptional strength and durability for racing applications. Technical specifications Type: Forged 4340 chrome moly steel Quantity: 4 pieces per set Bolts: Genuine ARP 2000 bolts included (upgrade available to ARP L19 bolts) Bolts Size: 3/8" Tolerance: Balanced to +/- 1 gram per set Piston Bolt Hole Tolerance: +-4/1000mm Power Rating: 600hp ~ 800PS per set Strength of Fastening: 220,000/230,000 PSI Torque: 48ft ≈ 65 NM Top Acceleration: 9000rpm Warranty: 2 years for any manufacturing defects Center to Center Length: 129.54 mm Big End Diameter: 55 mm Small End Diameter: 24 mm Big End Width: 25.8 mm Small End Width: 25.8 mm Installation Professional installation is highly recommended as no instructions are included. Usage These connecting rods are designed for