Manley H-Tuff Series Connecting Rod Set for Select Subaru (EJ205 / EJ257)

Fits select 2002-2021 Subaru WRX and WRX STI (EJ205 / EJ257).

Manley H-Tuff Series connecting rods provide a significant strength upgrade over standard H-beam designs, engineered specifically for high-output EJ-series engines. These rods bridge the gap between standard H-beams and heavy-duty I-beams, featuring a thicker beam cross-section to handle increased combustion pressures and higher RPMs. Each rod is forged from high-strength 4340 alloy and undergoes a rigorous manufacturing process to ensure dimensional stability and fatigue resistance.

Every set is finished to exacting tolerances, with meticulous attention paid to final hone size, thread detailing, and alignment. This precision ensures a drop-in fit with proper bearing clearances and rod-to-crank orientation, which is essential for maintaining oil film thickness and engine longevity in high-boost applications.

• Forged from 4340 aircraft-quality alloy for superior tensile strength
• Thicker H-Tuff beam design for increased rigidity under high cylinder pressures
• Precision-machined big and small ends to exacting tolerances
• Compatible with ARP 8740 or ARP 2000 cap screws for secure clamping
• Strictly inspected for bend, twist, and thread consistency
• Engineered for high-performance Subaru EJ205 and EJ257 engine builds