Manley H-Tuff Plus H-Beam Connecting Rod Set for Subaru WRX/STi (EJ205 / EJ257)

Designed for high-output Subaru EJ205 and EJ257 engines, the Manley H-Tuff Plus series provides a substantial strength upgrade over standard H-beam designs. These rods are engineered with a significantly thicker beam cross-section to handle the increased cylinder pressures and rotational stress found in high-boost street and track builds. Each rod is forged from 4340 aircraft-quality vacuum degassed material and meticulously finished to ensure precise big-end and small-end tolerances.

• Forged from 4340 aircraft-quality vacuum degassed steel
• H-Tuff Plus design features a thicker beam for higher horsepower and torque capacity than standard H-Beams
• Shot-peened after machining to MIL specifications and 100% individually magnafluxed
• Equipped with premium 3/8" ARP 2000 bolts for superior tensile strength and clamping force
• Weight-matched sets within 1.5 grams for balanced engine rotation
• Precision finished bore sizing, thread detail, and alignment (bend/twist)

These connecting rods are an essential upgrade for builders pushing the limits of the EJ platform, offering the reliability of the Pro Series at a competitive price point. This set is specifically designed for Subaru WRX and STi applications using the EJ205 or EJ257 crankshaft and piston configurations.