Tomei Nissan Skyline R32 GT-R, R33 GT-R & R34 GT-R (89-02) RB26DETT Forged Piston Set - 86.50mm / CH30.00 (STD/2.8)

Engineered for the discerning enthusiast, the Tomei TA202A-NS05B forged piston set epitomizes the pinnacle of performance and precision. Designed for the iconic Nissan RB26DETT engine, this high-performance component is not merely an upgrade; it is a testament to the art of automotive engineering, meticulously crafted to convert combustion gas into dynamic power with unparalleled efficiency.

Design & Engineering
At the heart of the TA202A-NS05B lies a lightweight, high-rigidity forged piston, meticulously manufactured using a high-strength forging method. This advanced technique surpasses the conventional casting methods prevalent in commercial vehicles, ensuring that each piston can withstand the extreme pressures of a tuned engine. By optimizing wall thickness, Tomei has achieved a remarkable reduction in weight without compromising structural integrity, enhancing both performance and responsiveness.

The exclusive forged material utilized for each model minimizes excess material, thereby preventing unnecessary machining that could compromise strength. The 3D profile is meticulously designed to facilitate smooth piston movement with optimal clearance, featuring an oval barrel shape that accounts for the coefficient of thermal expansion a critical detail for high-performance applications.

Furthermore, the TA202A-NS05B is engineered to accommodate 1mm oversized valves, with a precisely shaped piston recess that enhances airflow and combustion efficiency. The inclusion of thin piston rings reduces friction loss, further optimizing engine performance. Each set comes complete with pins, clips, and rings, all designed specifically for the RB26DETT, ensuring a seamless integration into your performance build.

Technical Specifications
Application: RB26DETT
Bore: 86.50 mm (OEM +0.5)
Pin Diameter: 21.0 mm
Pin Length: 60.0 mm
Circlip Inner Diameter: 21.0 mm
Valve Recess: Yes
Compression Height: 30.00 mm (OEM 0.0)
Piston Volume: 10.8 cc
Piston Weight: 360.0 g
Pin Weight: 106.0 g
Total Weight: 466.0 g
Top Ring: 1.20 x 3.05 mm
Second Ring: 1.20 x 3.90 mm
Oil Ring: 2.50 x 2.95 mm
Piston Material: A4032

Fitment
Nissan 32 GT-R (1989-1994)
Nissan 33 GT-R (1993-1999)
Nissan 34 GT-R (1998-2002)