Manley 15029-4 H-Tuff Connecting Rods 4340 Forged Steel

The Manley 15029-4 H-Tuff Series connecting rods are precision-engineered performance connecting rods designed for Mitsubishi 4B11 turbocharged engines found in 2008-2015 Evolution X models. These forged steel connecting rods bridge the gap between standard H-beam rods and top-tier Turbo Tuff series, delivering exceptional strength and reliability for high-boost applications up to 750 flywheel horsepower.

Construction and Quality:

• Manufactured from aircraft-quality 4340 forged steel material
• Heat treated, stress relieved, and shot peened for maximum durability
• 100% individually magnafluxed to ensure the highest quality standards
• Fully machined in Manley's Lakewood, New Jersey facility to exacting OEM standards
• Weight matched to +/- 1.5 grams for perfect balance
• Perfectly round big and small ends with tightly controlled bend and twist tolerances

H-Tuff Design Features:

• Wider beam design with increased cross-sectional thickness in critical stress areas
• Heavier beam construction specifically engineered for elevated boost and high-powered applications
• Greater safety margin compared to standard H-beam connecting rods
• 5.656-inch center-to-center length
• 2.165-inch big end bore diameter
• 0.9055-inch (23mm) pin diameter
• Approximate weight of 620 grams per rod

Hardware and Specifications:

• Includes 3/8-inch ARP 2000 cap fasteners for reliable clamping force
• Rated for up to 750 flywheel horsepower in 4-cylinder applications

Manley connecting rods are manufactured to the same rigorous standards developed and approved by original equipment manufacturers, ensuring superior quality compared to inexpensive alternatives on the market. These H-Tuff series rods provide the perfect balance of performance, durability, and value for serious turbocharged engine builds.