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Description
Supertech Subaru EJ20/EJ25 Inconel Exhaust Valve - +1mm Oversize - Set of 8Experience enhanced performance with the Supertech Subaru EJ20 EJ25 Inconel Exhaust Valves. Crafted from premium Inconel material, these exhaust valves are designed to withstand extreme temperatures and harsh conditions, making them ideal for tuning enthusiasts aiming to push their engines beyond factory limits. This set of 8 valves features a +1mm oversize specification, ensuring improved flow and better engine efficiency in Subaru EJ20 and EJ25
Experience enhanced performance with the Supertech Subaru EJ20/EJ25 Inconel Exhaust Valves. Crafted from premium Inconel material, these exhaust valves are designed to withstand extreme temperatures and harsh conditions, making them ideal for tuning enthusiasts aiming to push their engines beyond factory limits. This set of 8 valves features a +1mm oversize specification, ensuring improved flow and better engine efficiency in Subaru EJ20 and EJ25 engine models.The valves are precision-engineered to offer durability and reliability, contributing to increased horsepower and torque. Whether you're building a high-performance daily driver or a race-ready machine, these exhaust valves provide the strength and quality required for demanding applications. They fit perfectly in the Subaru EJ20/EJ25 engine blocks, maintaining optimal sealing and valve timing accuracy.
Manufactured by Supertech, a trusted name in performance parts, these exhaust valves meet rigorous quality standards. Installation is straightforward for professional workshops and experienced home tuners alike. Upgrade your Subaru's exhaust system with this set and feel the difference in power delivery and engine response.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 4
Really good
Scent: Orange, Size: 30 Count (Pack of 1)
Using them in our 36' TT. Easy to use, works fast and eliminates odor. Good value for the price. Compatible with any camper, rv. We like the freshness and value. Can't speak to safety. Package quantity is great.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
No smells!
Scent: Orange, Size: 30 Count (Pack of 1)
These work really well for us in our camper. Our tank holds around 40 gallons. After dumping the tank I drop one in the toilet and flush for about a minute to add water to the tank. Then. Everytime we use our camper in the summer (2 or 3 times a month) I drop in another tablet in the toilet and do the same thing. This has worked great and we never have had a problem with smell! The box usually lasts me a couple of years. Definitely recommend.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Product great. Delivery not so much.
Scent: Lavender, Size: 30 Count (Pack of 1)
Product works fine. But having it delivered by Amazon in just a brown bag caused the plastic container that holds the product all in the bag. This really need to be shipped in a box. Aleast I can use the product and will have to store it in a Rubber made container.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Our go-to for RV tank maintenance – reliable
Scent: Pine, Size: 10 Count (Pack of 1), Scent: Pine, Size: 10 Count (Pack of 1)
This has become our go-to brand for maintaining the tanks in our 5th wheel camper. We’ve used several products over time, but we keep coming back to this one because it’s dependable and does exactly what it’s supposed to do.
The drop-ins are super easy to use—just toss one in and you’re set. We’ve had no issues with unpleasant odors while using these, even during longer trips, which makes a big difference when you’re living in close quarters.
We trust this brand and their products, and it’s one of those items we make sure to always have stocked before heading out.
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Not the best of scents for an RV Toilet Tank
Scent: Lavender, Size: 30 Count (Pack of 1)
I don't know why I thought the scent of lavender would be great for my black water holding tank, but it's not. I'm sorry to say that I will have to return it. There's 30 Camco toilet 🚽 treatment packets in this container. All you have to do is just drop one of these packets into the toilet and flush it down into the holding tank. I am not saying that this product is not good; I'm saying that I will have to exchange it for a different scent. I won't know until I try a different scent, because I might be allergic to Camco's RV Toilet Treatment Drop-ins. The lavender scent put out such a bad smell, I couldn't breathe all night last night. I had to keep filling up my tank, waiting for awhile, and then dumping it all out. I had to keep doing that till the bad smell went away. So I'm gonna give Camco another chance, and try a different scent, and just go from there. I should have known better than to use a toilet treatment that had a perfume scent. I'm allergic to fragrant's, I have to use fragrance free laundry soap.
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Reviewed in the United States on February 2, 2026
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