Connecting rods are a critical link between the pistons and crankshaft, and their strength becomes increasingly important as power and RPM rise. The Tomei Forged H-Beam Connecting Rod Set (part number TA203A-NS05A) is designed for the Nissan RB26DETT and RB25DET, using a standard 121.50 mm center-to-center length that maintains OEM geometry while offering significantly improved durability for performance applications.
Forged from SNCM439 material and finished in an H-beam configuration, these rods provide a strong balance of rigidity and controlled weight. The through-bolt design improves big-end stiffness and helps resist deformation under high load, while ARP L19 fasteners deliver high tensile and fatigue strength. Additional design details, including reinforced cap structure and optimized oiling provisions, support reliable operation in higher-output engines. At approximately 528 grams each, the rods remain a practical upgrade for builders seeking greater strength without moving to extreme aftermarket lengths.
This set is suitable for a wide range of RB26 and RB25 performance builds where increased cylinder pressure and RPM demand a more capable rod. At Terra Firma Automotive, we supply this genuine Tomei Forged H-Beam Connecting Rod Set as a proven foundation component for serious engine work. Whether the project is a strengthened street engine or a higher-power build, these rods deliver the material quality and design integrity associated with Tomei. Choose Terra Firma Automotive for authentic Japanese engine internals that support durable RB-series builds.
- Genuine Tomei Forged H-Beam Connecting Rod Set
- Part Number: TA203A-NS05A
- Application: Nissan RB26DETT and RB25DET
- Center-to-center length: 121.50 mm (standard)
- Material: SNCM439 forged steel
- Approximate weight: 528 g per rod
- H-beam design for strength and controlled mass
- Through-bolt big-end design for improved rigidity
- ARP L19 3/8-24 fasteners
- Reinforced big-end and cap structure
- Optimized oiling provisions
- Suitable for higher-power and high-RPM builds
- Maintains OEM rod length geometry
- Trusted Japanese connecting rod engineering
- Available from Terra Firma Automotive
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