Increasing displacement is one of the most effective ways to improve low- and mid-range torque on the Nissan RB26DETT and RB25DET. The Tomei 2.8L Stroker Kit (part number TA201A-NS05B) converts the engine to 2771 cc by combining a longer 77.70 mm stroke full-counterweight forged crankshaft with 87.00 mm bore Tomei pistons and matching H-beam connecting rods. The result is a significant increase in torque and throttle response that complements larger turbochargers and higher boost levels.
The kit uses a fully counterweighted billet crankshaft designed for high-rpm stability and durability under elevated cylinder pressures. The 87.00 mm (+1.0 mm) pistons are engineered by Tomei with a 30.00 mm compression height, while the connecting rods measure 119.50 mm center-to-center. This combination maintains proper geometry and allows builders to fine-tune final compression ratio through head gasket selection. Typical static compression ratios with an 88.0 mm bore gasket range from approximately 8.57:1 (1.2 mm) to 8.14:1 (1.8 mm), making the kit well suited for forced-induction applications.
Intended for non-NEO RB26DETT and RB25DET engines, this complete rotating assembly is aimed at serious performance builds where strength, balance, and increased displacement are priorities. At Terra Firma Automotive, we supply this genuine Tomei 2.8L Full Counter Stroker Kit as a foundational upgrade for Skyline GT-R and high-output RB25 projects. It provides the increased capacity and forged durability required for higher power targets while retaining the responsiveness that defines the RB platform. Choose Terra Firma Automotive for authentic Tomei engine internals engineered for demanding builds.
- Genuine Tomei 2.8L Stroker Kit
- Part Number: TA201A-NS05B
- Application: Nissan RB26DETT / RB25DET (Non-NEO)
- Displacement: 2771.4 cc
- Bore: 87.00 mm (OEM +1.0 mm)
- Stroke: 77.70 mm (OEM +4.0 mm)
- Full counterweight forged crankshaft
- Includes Tomei forged pistons
- Connecting rod length: 119.50 mm (C-to-C)
- Piston compression height: 30.00 mm
- Designed for forced-induction applications
- Compression ratio adjustable via head gasket thickness
- Significantly increases torque and mid-range response
- High-strength rotating assembly for elevated power levels
- Suitable for serious Skyline GT-R and RB25 performance builds
- Authentic Japanese Tomei engineering
- Available from Terra Firma Automotive
- Manual PDF, Click Here
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