One Piece Valve
Our valves are not finished from generic blanks rather they are specifically designed for each and every application. We work relentlessly, testing and researching every aspect trying to improve the air flow of our designs.
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Supertech Inconel Exhaust Valve Set of 12 - BMW N54Production of our racing valves begins with a one piece forging, where the head of the valve is forged under a slow two step process to keep a good material grain flow. The forging is then CNC machined in several steps to ensure the precision of the final dimensions. We then do another heat treatment for stress relieving followed by a nitride hardening treatment (or coating process depending on the application). Lastly, we do one more grinding,
Production of our racing valves begins with a one piece forging, where the head of the valve is forged under a slow two step process to keep a good material grain flow. The forging is then CNC machined in several steps to ensure the precision of the final dimensions. We then do another heat treatment for stress relieving followed by a nitride hardening treatment (or coating process depending on the application). Lastly, we do one more grinding, followed by our patented Superfinishing of the surface to ensure that each valve is free of any imperfections and the dimensions are precise.We apply more than 30 years of experience in the development of each and every Supertech racing valve we sell. Combine this experience with state of the art equipment such as ultrasonic tests, x-rays, laser measurement equipment, and applications like computerized Finite Element Analysis (FEA) and it is no wonder why supertech has some of the best performance products on the market.
While this is more than most manufacturers we dont stop there. We also do extensive testing working very closely with many of today's top engine builders in order to continuously improve our products. All of this is meant to insure Supertech's industry leading reputation for high flow rates, durability and uncompromising quality.
Durability
With every valve design we strive to maximize durability through higher fatigue resistance and tensile strength. Each valve tip is hardened beyond 52HRc.
Strict Tolerances
Its unlikely you will find any of our competitors valves with stricter dimensional tolerances than our Supertech valves. Combine that with finished seats with equally strict run out tolerances and you wont find a better sealing, better performing and easier to install solution anywhere!
Higher Flow Rates
Optimum high flow rates are achieved by ensuring that our valves are manufactured with the best angles for each application. We consider back cut, under cut and valve head angles for each application to produce the optimum high flow rates for each application.
Superfinish
In 2006 we introduced our stem Superfinishing as a standard addition to all of our valves at no additional cost. When our Superfinish is combined with our Black Nitrided valve, it reduces the surface roughness to 1/3 of our chrome coated valve. The end result& unsurpassed performance and durability.
- Head Diam: 28mm (std)
- Material: Inconel-Nimonic / Sodium Filled
- Groove Type: Single Groove
- Length: 112.9mm
- Stem Diam: 5.96mm
Replaces OE Part # 11-34-7-573-840 / 11 34 7 573 840 / 11347573840
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.4 ★★★★★
Based on 885 reviews
Sort
Product Reviews
★★★★★ 3
Ho
If there was more room it would work great but your near your leg is always in the way and you really can't use the drink holder so for 60 bucks I would have never have gotten it but for a shorter person I guess it would be okay or if there's more room in the console area
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
★★★★★ 5
The search is over…
Style: 15W Charger
I have purchased so many mounts, but this one is perfect. It is easy to remove and apply to the screen. I don’t have to worry about damaging the screen with adhesive. The magnet is strong, and as a result, the phone is very stable. The most important benefit for me is the multiple viewing positions. The vertical placement and height are prefect. This is a quality product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 17, 2026
★★★★★ 5
Reliable charging, surprisingly strong and securely holds my iPhone without needing any adhesive
Style: 15W Charger
The Qi2 15W Tesla MagSafe Charger is a great charging solution for my Model Y. I really appreciate the multiple mounting position options—it makes it easy to find the perfect setup. It also hides cords nicely, giving a clean, integrated look inside the car. The magnet is surprisingly strong and securely holds my iPhone without needing any adhesive, unlike other mounts I’ve tried. It delivers fast, reliable charging and works flawlessly with my MagSafe-compatible phone. Highly recommended for any Tesla owner looking for a clean and functional charging mount.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 1, 2025
★★★★★ 5
strong magnet
Style: 15W Charger
This procuts magnet is really strong. would hold a tablet but I don't recommend that. works just fine with my samsung Tab phone that is larger than most iphones.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
★★★★★ 1
Cheap, easily breakable, and barley works
Style: 15W Charger, Style: 15W Charger
First off, it didn’t even come with the charging chord, so I had to order another separately after it came. The product broke the fourth time i used it, the whole thing came apart when i tried taking my phone off. When it was working, it charged maybe 1% every hour. Definitely not the best choice in the category, look at other options
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 21, 2025
recommand products
Dove Care & Protect Antibacterial Liquid Body Wash; 34 oz
22.99
Divesart - Decke von Mutter zu Tochter - "Für meine kleine Prinzessin"
27.16
Derma E Antioxidant Natural Sunscreen Body SPF30
15.80
CP Piston Dodge Neon SRT-4 2.4L Turbo - Bore (88mm) Size - +0.5mm CR - 9.0 - Single
134.97
RAW Cone Creator
25.00