Speedmaster 1-274-031 I-Beam Pro Forged 4340 Connecting Rod Set 6.000" 2.100" .927" with ARP 2000 Bolts

The Speedmaster 1-274-031 I-Beam Pro Connecting Rod Set delivers race-proven performance for high-output Chevy Small Block 350 builds. Forged from aircraft-grade 4340 chromoly steel and engineered to handle 1,000+ horsepower, these rods combine the traditional lightweight advantages of an I-beam profile with strength-enhancing features typically found in H-beam designs.

Key Features:

• Forged 4340 Chromoly Steel Construction — Aircraft-quality material provides an exceptional strength-to-weight ratio for demanding racing applications
• I-Beam Pro Profile with H-Beam Strength Adders — Engineered to incorporate the best characteristics of both beam styles for maximum reliability
• Long Stroke Clearancing — Profiled with additional clearance for stroker engine combinations
• One-Rib Cap Design — Adds rigidity and improved bearing support at the big end
• Polished Beams — Eliminates stress risers to reduce the risk of fatigue cracking under high-cycle loads
• Shot-Peened & Stress-Relieved Surfaces — All surfaces are shot-peened to improve fatigue strength and stress-relieved to prevent long-term distortion
• X-Ray & Ultrasonic Tested — Each rod undergoes rigorous non-destructive testing to verify internal material integrity before leaving the factory
• ARP 2000 Rod Bolts Included — Precision CNC-machined ARP 2000-series bolts are heat-treated with rolled threads, delivering up to ten times greater fatigue strength than standard OEM fasteners
• Full Floating Wrist Pin — Reduces friction, heat, and drag for more precise piston control

Specifications:

• Beam Style: I-Beam Pro
• Material: Forged 4340 Chromoly Steel
• Center-to-Center Length: 6.000 in.
• Rod Journal Diameter: 2.100 in.
• Big End Bore Diameter: 2.2250 in.
• Pin End Bore Diameter: 0.927 in.
• Wrist Pin Style: Full Floating
• Rod Bolt Brand: ARP 2000

The Speedmaster 1-274-031 connecting rod set is an ideal choice for serious engine builders seeking a high-strength, lightweight forged rod capable of withstanding the demands of high-compression, forced induction, or nitrous-assisted builds.