Converting an RB26DETT or RB25DET to 2.8 liters is one of the most effective ways to increase torque and overall power potential. The Tomei Engine Stroker Kit (part number TA201A-NS05A) is a complete package designed to achieve this displacement increase using an 87 mm bore and a longer-stroke crankshaft, supplied with matching Tomei forged components for Non-NEO engines.
At the center of the kit is a forged 8-counterweight crankshaft with a 77.70 mm stroke, increasing displacement while maintaining structural integrity under higher loads. Matched to this are Tomei forged H-beam connecting rods in the correct shorter length for the stroker combination, along with a complete set of Tomei forged pistons in 87 mm bore. An oil jet spacer is also included to support proper piston cooling in the higher-displacement configuration. All primary rotating assembly components are engineered to work together, reducing the need to source and match individual pieces from different suppliers.
This kit is intended for serious RB26 and RB25 builds where greater mid-range torque and higher power capacity are the goals. It is not compatible with NEO engines and requires professional machining, balancing, and assembly for correct installation. Proper supporting modifications, including appropriate engine management, are essential to realize the benefits of the increased displacement safely.
At Terra Firma Automotive, we supply this genuine Tomei 2.8 L Stroker Kit as a comprehensive foundation for high-output Non-NEO RB builds. Whether the project is focused on stronger street performance or higher-power applications, this kit delivers the matched crankshaft, rods, and pistons associated with Tomei’s stroker program. Choose Terra Firma Automotive for authentic Japanese engine internals that support capable 2.8-liter RB26 and RB25 combinations.
- Genuine Tomei Engine Stroker Kit
- Part Number: TA201A-NS05A
- Converts RB26DETT / RB25DET to 2.8 liters
- Includes forged 8-counterweight crankshaft (77.7 mm stroke)
- Includes Tomei forged H-beam connecting rods
- Includes Tomei forged 87 mm piston kit
- Oil jet spacer included
- Designed for Non-NEO engines only
- Not compatible with RB25/RB26 NEO
- Matched rotating assembly components
- Increased displacement for greater torque potential
- Suitable for high-output and performance builds
- Requires professional machining and assembly
- Trusted Japanese stroker kit engineering
- Available from Terra Firma Automotive
- Not For Use With NEO
- Manual PDF, Click Here
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