The TOMEI T440M TURBO KIT for RB25DET refines the balance of the housing, turbine wheel and the wastegate actuator to make RB25 even more enjoyable and user-friendly compared to the previous model. While improving low-to-mid-range response, also focused on enhancing mid-to-high RPM characteristics, where the stock turbo is known to fall short. The billet compressor wheel further optimizes spooling efficiency.
Features
- Redeveloped from the material for more efficiency to convert the energy straight to power with better lubrication and cooling.
- High quality floating journal bearing at the center shaft.
- Remarkable stability under high boost.
- The ARMS series turbo kits all come supplied with all the required gaskets and fitting, no modifications required.
- Improved low-mid RPM range for a much better driving experience on the street. Designed to reduce surging and make the power curve as linear with engine RPM as possible for a easy, smooth and stress-free driving.
Notes
- Please see the TOMEI Product Reference for the complete specs and a Setting Guide.
We ship to the United States and 150 other countries.
Japan Post EMS & ePacket, FedEx, DHL and more.
| Vehicle | Price | Order |
|---|---|---|
| 173033 Back in stock 15 Nov 2026 at Tomei | ||
| Laurel - C34 RB25DET | | |
| 173033 Back in stock 15 Nov 2026 at Tomei | ||
| Laurel - C35 RB25DET | | |
| 173033 Back in stock 15 Nov 2026 at Tomei | ||
| Skyline - R33 GTS-t - ECR33 RB25DET | | |
| 173033 Back in stock 15 Nov 2026 at Tomei | ||
| Skyline - R34 25GTT - ER34 RB25DET | | |
| 173033 Back in stock 15 Nov 2026 at Tomei | ||
| Stagea - WC34 RB25DET | | |
Tomei was founded in 1968 by members of the Johoku Riders motorcycle club, among them Nissan works driver Seiichi Suzuki. It began as a racing engine builder for Nissan engines only, and its work on the Nissan L-series and later the RB and SR engines made its name. The company took the name Tomei Powered when it moved to Machida, Tokyo, in 1994.
Tomei now develops parts for many Japanese engines, Mitsubishi, Subaru and Toyota as well as Nissan: camshafts, valve train parts, pistons, connecting rods and crankshafts, complete engines, and exhaust systems such as its well-known Expreme titanium range.
Associated JDM Parts
Blitz SE Intercooler Kit
GReddy Injector Kit
326 Power Racing Gloves
About NENGUN
Since the year 2000, NENGUN has supplied over 500,000 parts direct from Fukuoka, Japan to 170 countries worldwide. If you have any questions, our experienced and friendly customer service team is always happy to help, please send us an enquiry.












