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If you're diving into the world of performance upgrades for your Subaru, let me tell you about the Tomei EJ Racing Valve Set. Tomei has been in the game since 1968, starting out as a race car tuner in Japan. Over the decades, they've really honed their craft, becoming a go-to name in motorsport. Their background in racing means they know exactly what engines go through when pushed to the limit—whether that's on the track or just tearing it up on the streets.
These valves are built to handle the heat and strain that come with high-performance driving. We're talking about serious quality here; Tomei uses top-notch materials that can withstand the intense conditions of a turbocharged engine. They've designed these oversized valves specifically to boost airflow, which translates to more power. The intake valves measure in at 37mm and the exhaust at 33mm, both crafted to optimize flow rates. The thinner stem design reduces airflow resistance, making the whole system more efficient and lighter than the stock components.
What I really appreciate is Tomei's attention to detail. They've engineered these valves to strict tolerances because even the smallest measurement off can lead to engine failure. You want peace of mind when you're pushing your car, and these valves deliver just that. Plus, they've improved heat resistance and corrosion resistance, so you know they'll hold up under pressure.
Here's a quick rundown of what you get:
- Improved fatigue rate
- Enhanced heat resistance
- Better corrosion resistance
- Increased airflow, leading to more horsepower compared to factory valves
- Valve Diameter: Intake 37mm, Exhaust 33mm
- Stem Diameter: 5.96mm
- Stem Length: Intake 103.85mm, Exhaust 104.2mm
These valves are designed to fit a range of Subaru models, including:
- Subaru WRX EJ20 Turbo (1994-2021)
- Subaru WRX STI EJ20 Turbo (1994-2020)
- Subaru WRX EJ25 Turbo (2010-2022)
- Subaru WRX STI EJ25 Turbo (2005-2014)
So, if you're looking to upgrade your engine's performance, the Tomei EJ Racing Valve Set is definitely worth considering. They're designed for those who want to push their Subaru to the next level. And if you need installation instructions, you can find them here.
Other Part Numbers:
Tomei #163403
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
Tomei is one of the most recognizable brands when it comes to performance tuning. The company started in 1968 by Mr. Seiichi Suzuki and initially tuned race cars. Their concept is “To produce a great product for ultimate driving pleasure” which has translated into all their parts, making it a sought-after brand worldwide. Today, Tomei is used by various enthusiasts, tuners, professional drivers, and racers everywhere.
Racing HeritageTomei has its roots firmly attached to motorsports racing. With its experience in creating fast cars for decades, it was able to create parts that are considered as one of the most.sophisticated and technologically advanced parts in the market. Not only does it produce power. It ensures that it maintains its reliability as well.
The company offers a wide range of products, ranging from engine components such as camshafts, valve springs, pistons, connecting rods, cam gears, gaskets, limited slip differentials, exhaust systems, and more. Their parts are designed to perform well, not only on the streets, but on the track as well.
They have various race track records under their belt to prove it.
Purchase Tomei Products at Vivid RacingIf you want to upgrade the performance of your vehicle, then Tomei is the right brand for you. The company has consistently provided its customers with high-perfromance products that deliver what it promised. Using only the highest quality of materials available, which includes Titanium, they are able to develop parts that are strong and lightweight. This is the formula for a better performing engine. Visit Vivid Racing and check out their list of products that would fit your specific requirement.
| Sale price | None |
| Wholesale price | $396.48 |
| Shipping |
Weight: 3.00 Length: 13 Width: 8 Height: 4 |
| Product Added At | ? |
| Product Modified At | Monday 23 June, 2025 |
| Imported By | ETLOverride |
| Last Edited By | kathI@vividracing.com |
| View In Admin |
| Carb Approved | No |
|---|---|
| Carb Number | - |
| Epa Status | - |
| Prop65 | - |
| Carb Required | - |
| Vendor | Inv | Cost | Retail | Jobber | MAP | Core | Updated | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Tomei Powered USA Inc | $336.00 | $504.00 | ? | ? | ? | 2025-06-23 11:45:35 |
