BoostLine CH6125-927 Forged 4340 I-Beam Connecting Rods for Dodge Gen 3 HEMI

Vehicle Fitment

• 2003-2026 Dodge/Chrysler/Jeep Gen 3 HEMI V8 engines - stock-stroke applications using the factory 2.100" rod journal crankshaft
• 5.7L HEMI (345ci) - Dodge Challenger, Charger, Durango, Ram 1500; Chrysler 300C; Jeep Grand Cherokee, Wrangler 2012-2018
• 6.1L HEMI (370ci) - Dodge Challenger SRT8, Charger SRT8; Chrysler 300C SRT8; Jeep Grand Cherokee SRT8
• 6.2L HEMI Supercharged (376ci) - Dodge Challenger SRT Hellcat/Demon/Super Stock; Charger SRT Hellcat; Jeep Grand Cherokee Trackhawk; Ram 1500 TRX; Durango SRT Hellcat
• 6.4L HEMI (392ci) - Dodge Challenger Scat Pack/SRT 392; Charger Scat Pack/SRT 392; Jeep Wrangler 392; Grand Cherokee SRT; Durango SRT 392

Fitment Notes

• This is the stock-stroke Gen 3 HEMI connecting rod length (6.125") with the factory journal diameter (2.100") - direct replacement dimensions for all Gen 3 HEMI V8 engines
• For stroker crankshaft builds using a 2.126" rod journal and 6.200" center-to-center length, see BoostLine CH6200-927
• Requires a 0.927" wrist pin diameter piston
• Engine builder must verify piston pin size and block clearances before installation
• Designed for high-boost, supercharged, and nitrous-assisted engine combinations rated up to 2,000 horsepower

Features

• Patented 3-pocket I-beam design engineered specifically for forced-induction and nitrous applications
• Forged from premium 4340 chromoly steel for maximum strength under extreme cylinder pressures
• 60% improvement in bending strength compared to common H-beam connecting rod designs
• 20% reduction in tensile stress compared to H-beam designs for improved fatigue life
• Dramatically improved big-end stability under high tensile loads at elevated RPM
• High-quality Ampco bronze bushing material in the small end for superior wrist pin bearing performance
• Industry-leading ARP 2000 fasteners included as standard (ARP 625+ upgrade available separately)
• Each rod individually heat-treated, shot-peened, and inspected on aerospace-grade CMM equipment
• Designed and finish-machined in the USA in Mentor, Ohio
• Rated up to 2,000 horsepower in 8-cylinder applications

Specifications

• Center-to-Center Length: 6.125 inches
• Wrist Pin Bore Diameter: 0.927 inches
• Wrist Pin Bore Width: 0.900 inches
• Big-End Journal Bore: 2.100 inches
• Big-End Width: 0.933 inches
• Bolt Size: 7/16 inch
• Bolt Type: ARP 2000 (standard)
• Material: Forged 4340 chromoly steel
• Beam Style: I-beam (patented 3-pocket design)
• Finish: Shot-peened
• Wrist Pin Style: Floating
• Sold as: Set of 8

Included Components

• 8x BoostLine forged 4340 I-beam connecting rods with Ampco bronze wrist pin bushings
• 8x ARP 2000 rod bolt sets (7/16")
• 8x Individual CMM inspection reports

Product Description

The BoostLine CH6125-927 Connecting Rod Set is purpose-built for high-horsepower Gen 3 HEMI engine combinations running forced induction or nitrous oxide. With a 6.125-inch center-to-center length and a 2.100-inch big-end journal bore, these rods match the factory rod dimensions used in all stock-stroke 5.7L, 6.1L, 6.2L, and 6.4L HEMI engines, making them a direct-replacement upgrade for builders looking to reinforce their bottom end for serious power. The patented 3-pocket I-beam design delivers 60 percent more bending strength and 20 percent less tensile stress than conventional H-beam rods, making them ideal for the extreme cylinder pressures generated by turbocharged, supercharged, and nitrous-fed HEMI combinations.

Each rod is forged from premium 4340 chromoly steel, then heat-treated and shot-peened before final finish machining at BoostLine's facility in Mentor, Ohio. The small end features a high-quality Ampco bronze bushing with pin clearance set between 0.0009 and 0.0011 inches, allowing engine builders to custom-fit the wrist pin specification. Industry-leading ARP 2000 fasteners rated at 220,000 psi are included as standard hardware, with an optional upgrade to ARP 625+ Custom Age bolts rated at 260,000 to 280,000 psi available for the most extreme builds. The 3-pocket body design combines the low rotating mass of an I-beam with the big-end stability traditionally associated with H-beam rods.

BoostLine rates these rods at up to 2,000 horsepower in 8-cylinder applications, covering everything from mildly boosted street builds to full-race drag and roll-race HEMI engines. Every rod in the set is individually inspected using aerospace-grade coordinate measuring machine equipment, and each set ships with detailed inspection reports documenting critical dimensions to 0.0001-inch precision. Rods are vacuum-wrapped for corrosion protection and separated by thick foam inserts to prevent shipping damage. This is the stock-stroke rod; builders running aftermarket stroker crankshafts with a 2.126-inch rod journal should order the BoostLine CH6200-927 instead.