Carrillo S1730 CARR-Series MP35N High-Performance Connecting Rod Bolt

The Carrillo S1730 is a CARR-series connecting rod bolt manufactured from MP35N multiphase alloy, representing CP-Carrillo's premium fastener offering for high-performance and race engine applications. With an ultimate tensile strength (UTS) of 285,000 PSI, the CARR bolt significantly outperforms standard H11 tool steel rod bolts and is engineered to handle the extreme clamp loads demanded by forced induction, high-RPM, and endurance racing environments.

Key Features:

• MP35N Multiphase Alloy Construction — 285 KSI UTS rating for maximum tensile strength and fatigue resistance
• Asymmetrical Thread Design — each thread features a slightly varied profile to distribute engagement load evenly, increasing clamp load and improving fastener fatigue life
• Unlimited Torque Cycles — CARR bolts are rated for indefinite re-use as long as the bolt has not been overstretched or subjected to excessive heat
• Stretch-Method Installation Recommended — use a rod bolt stretch gauge and assembly lube on threads and under the bolt head to ensure precise and consistent clamping load
• CARR Series Identification — serial number beginning with "S" confirms MP35N multiphase material
• Ideal for high-RPM builds, forced induction applications, and endurance race engines

The Carrillo S1730 CARR rod bolt is a direct replacement fastener designed for use with CP-Carrillo connecting rods. Always verify bolt free length before and after installation to confirm the bolt has not been over-yielded. Assembly lube is required on both the thread and bolt head contact surfaces during installation.