ARP 201-6303 Connecting Rod Bolt Kit Pro Series - ARP2000

The ARP 201-6303 is a complete connecting rod bolt kit engineered with ARP2000 material for superior strength and reliability in high-performance racing applications. ARP rod bolts have become the industry standard, chosen by leading connecting rod manufacturers for their exceptional fatigue strength and proven durability under extreme loads.

Why ARP Rod Bolts Are Superior:

The connecting rod bolt has always been the weakest link in any connecting rod assembly. ARP addresses this critical vulnerability with fasteners that deliver ten times the fatigue strength of competing bolts. ARP2000 alloy steel can be heat treated to achieve clamping loads at 220,000 psi, making it an ideal upgrade from standard 8740 chrome moly in both steel and aluminum connecting rods for short track and drag racing applications.

Key Features:

• Forged in-house using premium quality materials for consistent performance
• Heat-treated using specialized vertical racks to ensure complete 360-degree penetration
• Threads rolled after heat-treat to provide up to 10-times longer fatigue life
• Precision CNC-machined to exacting specifications for perfect fit
• Each bolt proudly stamped with the ARP name as assurance of quality

Wave-Loc Technology Benefits:

• Wave-Loc surface contacts rod and cap for optimal alignment and reduced fluctuating stress
• Provides secure interference fit (.001 to .005 range) for OEM connecting rods despite manufacturing tolerances
• Superior material grain flow compared to knurled bolts which have sharp edges and stress risers
• Eliminates galling and scoring through smooth contact surface design
• Strengthens the rod itself by reducing stress concentration

About ARP2000 Material:

ARP2000 is an advanced alloy steel capable of achieving higher clamping loads than traditional chrome moly while maintaining excellent fatigue properties. When properly installed, stress corrosion and hydrogen embrittlement are typically not concerns, making it a reliable choice for demanding racing environments.

Important Maintenance Note:

Monitor bolt stretch regularly and replace any bolt that has permanently elongated by .0005 inches to maintain optimal safety and performance.