-19%
Click to zoom in
SKU: MCEVI-1400S-HS-12 / UPC: 01037721245051
Supertech BMW B58/B48 Inconel Sodium Filled Exhaust Valve Set of 12
Unleash the full potential of your BMW or Toyota B58/B48 engine with the Supertech Inconel Single Groove Sodium Filled Exhaust Valve Set (MCEVI-1400S-HS-12), the premier choice for high-performance enthusiasts. Engineered for superior durability and thermal efficiency, this valve set outperforms all competitors, delivering unmatched reliability under extreme conditions. Designed to replace stock exhaust valves, these Supertech valves enhance engine performance, making them the top pick for tuners and racers who demand the best.
Why Supertech?
Thermal Performance: Sodium-filled Inconel/Nimonic alloy reduces valve head temperatures by up to 10%, improving durability and allowing for aggressive spark timing, surpassing standard stainless steel valves.
Durability: Crafted from Inconel, a high-nickel superalloy used in aerospace and motorsport, these valves withstand extreme heat and stress, outlasting competitors’ offerings.
Flow Dynamics: Black nitride coating and precision CNC machining ensure optimal airflow and high flow rates, boosting horsepower over stock or lesser aftermarket valves.
Lightweight Design: Approximately 10% lighter than stock valves, reducing valvetrain stress and enabling higher RPMs without flutter, unlike heavier alternatives.
Race-Proven Reliability: Trusted in high-stakes events like drag racing, rally, and endurance series, these valves deliver consistent performance where others fail.
Fitment: Single groove design requires Supertech KPR-6S-7 keepers, ensuring a seamless upgrade for B58/B48 engines without modification.
This valve set is the definitive choice for BMW and Toyota owners seeking maximum power, durability, and precision, making it the best investment for high-performance builds.
Fitment:
- Year: 2014–2025
- Make and Models:
- BMW:
- 1 Series: M140i, M140i xDrive (2016–2019, F20/F21)
- 2 Series: M240i, M240i xDrive (2016–2021, F22/F23), M235i (2014–2016, F22/F23)
- 3 Series: 340i, 340i xDrive (2015–2019, F30/F31/F34), 330i, 330i xDrive (2016–2021, G20)
- 4 Series: 440i, 440i xDrive (2016–2020, F32/F33/F36), 430i (2016–2020, F32/F33)
- 5 Series: 540i, 540i xDrive (2017–2023, G30/G31)
- 6 Series: 640i, 640i xDrive (2017–2019, G32)
- 7 Series: 740i, 740i xDrive (2016–2022, G11/G12)
- X3: M40i (2018–2024, G01), xDrive30i (2018–2024, G01)
- X4: M40i (2018–2024, G02)
- Z4: M40i (2019–2025, G29)
- Toyota:
- Supra: GR 3.0L (2019–2025, A90/A91)
- MINI:
- Clubman: John Cooper Works ALL4, S, S ALL4 (2016–2024, F54)
- Countryman: John Cooper Works ALL4, S, S ALL4 (2017–2024, F60)
- Cooper: S, John Cooper Works (2014–2024, F55/F56/F57)
- Engines: B38 (1.5L turbo), B48 (2.0L turbo), B58 (3.0L turbo)
Notes: Fits all listed models with B38, B48, or B58 engines. Must be used with single groove valve keepers (Part: KPR-6S-7, Not Included) Recommended for turbocharged and high-RPM applications.
Included:
The Supertech Inconel Sodium Filled Exhaust Valve Set (SKU: MCEVI-1400S-HS-12, UPC: 01037721245051) includes:
- Exhaust Valves (Part: MCEVI-1400S-HS, Set of 12):
- Material: Inconel/Nimonic alloy, sodium-filled
- Coating: Black nitride
- Head Diameter: 28.5mm (standard)
- Stem Diameter: 5.95mm
- Length: 100.1mm
- Groove Type: Single groove
- Packaging: Securely packaged to ensure safe delivery
- Note: Valve keepers (KPR-6S-7) and valve springs (e.g., SPR-FE20BE) are not included but required for installation. Compatible with stock or aftermarket retainers (e.g., RET-BMB48/TE, RET-BMB48/TI).
Performance Advantages Over Competitors
- Thermal Efficiency: Sodium filling dissipates heat faster than non-sodium-filled valves, reducing detonation risk and enabling higher boost levels, unlike standard Inconel or stainless steel valves.
- Material Superiority: Inconel/Nimonic alloy offers greater heat resistance than EV8 or EV16 stainless steel used by competitors, ensuring longevity in turbocharged environments.
- Precision Engineering: Supertech’s two-step forging, CNC machining, and patented Superfinishing ensure tighter tolerances and smoother surfaces, improving flow and reducing wear compared to budget brands.
- High-RPM Stability: Lightweight design and compatibility with high-lift camshafts (up to 12mm lift) minimize valve float, outperforming heavier stock or generic aftermarket valves.
- Motorsport Proven: Used in high-performance builds for drag, rally, and road racing, these valves deliver reliability under extreme conditions, unlike less robust alternatives.
- Versatility: Optimized for both street and race applications, offering flexibility for tuners compared to race-only or stock-replacement valves.
Installation Notes:
- Ease of Installation: Direct replacement for stock exhaust valves, requiring no cylinder head modifications when used with KPR-6S-7 keepers.
- Compatibility: Designed for single groove valvetrain systems. Compatible with stock or aftermarket valve springs (e.g., SPR-FE20BE, 77lbs seat pressure, 180lbs at 10mm lift).
- Recommended Upgrades: Pair with Supertech intake valves (TIVN-1058/MCIVN-1400S) and titanium retainers (RET-BMB48/TI) for a complete valvetrain overhaul.
- Professional Installation: Recommended for high-performance builds to ensure proper valve lash and spring pressure settings.
- Tuning: For maximum performance, recalibrate ECU for increased boost or camshaft profiles after installation.
Purchase Info:
- SKU: MCEVI-1400S-HS-12
- UPC: 01037721245051
Warranty: Limited warranty covers defects in workmanship or materials (contact Supertech for details). Note: No express or implied warranty of merchantability or fitness for purpose due to racing application.
Price: Varies by retailer; check for competitive pricing and bundle deals with valve springs or retainers.
Supertech
Supertech engine internals including valves, valve springs, retainers, and valvetrain components are stocked at Black Ops Auto Works for a wide range of import and domestic engine platforms. Shop upgraded parts for BMW M54, Ford and Mazda Duratec, Honda Civic and CR-Z, Nissan KA24, VQ35, and RB26, Toyota 4AGE, 2JZ, 5VZFE, and 2UZ-FE, Volkswagen and Audi EA888 and EA113, Mazda Miata, and Mini Cooper engines. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 617 Supertech SKUs spanning valves, springs, retainers, and related valvetrain hardware across import and domestic engine families. What This Collection Covers Supertech specializes in precision engine internals for naturally aspirated and turbocharged builds, manufacturing valves, valve springs, retainers, locks, and seals engineered for high RPM durability and improved airflow. This collection brings together fitment verified ...
View Supertech Products
Valves
Engine valves for import, domestic, and European performance builds are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, single-groove and triple-groove valves, Inconel and titanium valves, and complete valve sets for 2JZ, RB26, RB25, VR38DETT, K-series, EA888, EA113, FA20, S58, B58, and HEMI 5.4L and 5.7L applications. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 577 valve SKUs across intake, exhaust, and material specification categories. What This Category Covers The Valves category covers replacement and upgraded intake and exhaust valves for naturally aspirated, turbocharged, and supercharged cylinder heads. Coverage spans budget-focused OE-spec valves through race-grade Inconel and titanium valves built for sustained high RPM and boosted horsepower. Categories Included Intake valves, exhaust valves, single valves sold individually, and full valve set...
View Valves Products
Valves & Components
Valves and valvetrain components for import, domestic, and performance engine platforms are stocked at Black Ops Auto Works. Shop intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, and lash caps for Toyota 2JZ and Supra, Honda K-Series, Nissan RB and SR20, BMW B58 and S58, Subaru FA20, Ford Coyote, and GM LS platforms. Every part is filterable by year, make, model, and engine so builders and tuners can confirm fitment before ordering. Black Ops Auto Works carries 1,391 valvetrain SKUs from proven performance brands. What This Category Covers Valves and valvetrain components manage airflow into and out of the combustion chamber and keep the valvetrain sealed and stable at high RPM. This collection spans intake valves, exhaust valves, valve covers, valve cover gaskets, valve guides, valve springs, retainers, valve locks, valve seals, lash caps, and cam follower shims. Why the Valvetrain Matters for Pe...
View Valves & Components Products