ARP 271-6301 Connecting Rod Bolt Kit Pro Series - ARP2000

The ARP 271-6301 is a complete connecting rod bolt kit featuring ARP2000 Pro Series material, designed to address the weak link in connecting rods with superior strength and reliability. This bolt kit delivers the performance that has made ARP the preferred choice of connecting rod manufacturers worldwide.

ARP2000 Material Advantage:

ARP2000 is an advanced alloy steel capable of achieving clamping loads at 220,000 psi, offering significantly greater strength than standard 8740 chrome moly. This material is widely used in short track and drag racing applications as a performance upgrade for both steel and aluminum connecting rods. With proper installation, ARP2000 provides excellent resistance to stress corrosion and hydrogen embrittlement.

Superior Fatigue Strength:

Testing has demonstrated that ARP rod bolts deliver ten times the fatigue strength of competing fasteners. This exceptional durability translates to longer service life and improved reliability under extreme racing conditions. Each bolt is proudly stamped with the ARP name as your assurance of quality.

Manufacturing Excellence:

• Forged in-house using only the finest quality materials
• Heat-treated using special vertical racks to ensure complete 360-degree penetration
• Threads rolled after heat-treat to provide up to 10 times longer fatigue strength
• Precision CNC-machined to exacting specifications
• Specially designed for optimum reliability in each application

Wave-Loc Technology Benefits:

• Wave-Loc surface contacts the rod and cap for optimum alignment and reduction of fluctuating stress
• Provides snug interference fit (.001 to .005) for OEM connecting rods despite wide factory tolerances
• Superior material grain flow from patented Wave-Loc design compared to knurled bolts with stress risers
• Virtually eliminates galling and scoring with smooth contact surface

Important Maintenance Note:

Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 inches to maintain proper clamping force and connecting rod integrity.