Eagle SIR I Beam Rods for SBC 5.700

SIR connecting rods are forged from 5140 steel with ARP 3/8" cap screw rod bolts. Pressed fit pin for a direct replacement part. Critical big end sizing is controlled using a CNC equipment. SIR connecting rods offer a 50% increase in strength over stock connecting rods. All rods are weight matched in sets +/- 2 Grams. SIR Rods are rated for a SB Chevy 500 HP application. Perfect choice for Pro-Street, INCA, and all stock car and drag racing classes when a stock appearance rod is needed.