General description H-beam Conrod Connecting Rods for Triumph TR3 and TR4 are designed for high-performance racing applications. Made from forged 4340 aircraft chrome moly quality steel, these connecting rods offer exceptional strength and durability. Each set includes 4 pieces and comes with genuine ARP 2000 bolts, ensuring reliable fastening. Technical specifications Center to center length: 158.75mm Big end diameter: 56.72mm Small end diameter: 22.22mm Big end width: 29.85mm Small end width: 26.92mm Power: 600hp ~ 800PS per set Strength of the fastening: 220,000/230,000 PSI Torque: 48ft ≈ 65 NM Top acceleration: 9000rpm Warranty: 2 years for any manufacturing defect Tolerance: Balanced to +/- 1 gram in set Piston Bolt Hole tolerance: +-4/1000mm Installation Professional installation is highly recommended as no instructions are included. Usage These connecting rods are specifically designed for racing applications, providing the necessary strength and performance for high horsepower