- Description
- Reviews
- Shipping and Refund
Transform your B58 powered BMW M240, M340, M440 into a 475whp beast with our simple bolt-on performance package!
Save $298.99 when you purchase this package.
JB4® 475 Wheel Horsepower Gen2 B58 Package
Get up to 475 wheel horsepower while saving time and money with this easy to install package. Horsepower gains depend on fuel used.
Vehicle Fitment
BMW 2 Series
• 2022-Present G42 B58 BMW M240i, M240i xDrive, and M240xi
BMW 3 Series
• 2019-Present G20 G21 B58 BMW M340i, M340i xDrive, and M340xi
BMW 4 Series
• 2021-Present G22 G23 G26 B58 BMW M440i, M440i xDrive, and M440xi including Gran Coupe
Install guides can be downloaded from each products page.
Kit Includes
- B58 BMW JB4 Performance Tuner
- JB4PRO Bluetooth Adapter & Free JB4PRO App
- BMS Turbo Double Baffle Oil Catch Can for G Chassis B58 M240 M340 M440
- 6 NGK 96206 B58 Spark Plugs
- BMS Billet Spark Plug Gapper Tool (12mm)
- BMW - Magnetic Spark Plug Socket
- Specialty Spark Plug Feeler Gauge
- Official JB4® Logo Car Emblem/Badge
- Official JB4® License Plate Frame
- JB4 Magnetic Air Vent Phone Mount Holder
- White Burger Motorsports Logo Sticker Sheet (2 Pack)
- Choose one of our B58 intakes
- BMS B58 BMW M240i M340i M440i Competition Cold Air Intake
- BMS Silicone Front Mount Cold Air Intake for G Chassis B58 BMW
Recommended add-ons (sold separately, not included in package)
- BMS Billet Strut Cross Braces for G20 G21 G22 G23 G26 G42 BMW
- BMS Billet Oil Filter Cap for B58 BMW Engines
- Fuel-It! Bluetooth FLEX FUEL KIT for the B58 BMW M240i, M340i, & M440i
Dyno results 2020 BMW M340i

Handling
Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.
For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.
Expedited shipping applies only once the item is ready to ship.
Return
You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.
To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.
You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders
Non-returnable items:
- Burger Motorsports (BMS) products
- Used items
- Air Intakes
- Hazardous materials, flammable liquids, or gases
- Discounted items and gift cards other than "PALENON PERFORMANCE" brand
Exchanges
Return the item and place a new order once approved.
Refunds
Approved refunds are issued to the original payment method. A restocking fee is 20% will be applied. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.
Cancellations
Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom, specialized items or pre-order items canceled within their lead time are also subject to this fee. Will also incur a 10% restocking fee.
Damaged or incorrect items
Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.
Disputes / Chargebacks
Our legal team is fully prepared to take stringent action against you for filing a baseless claim and initiating a fraudulent chargeback. This will lead to civil or criminal proceedings, which would require you to engage with our attorneys in our jurisdiction.
It is crucial to understand that filing a false chargeback is a serious offense, punishable by substantial fines or imprisonment. Potential penalties for fraudulent chargebacks can include one to three years in prison and fines ranging from $1,000 to $10,000. We treat all chargebacks with the utmost seriousness, regardless of the amount, as this is classified as a felony.
We will compose all necessary information to send your account to a collections agency and request that you be served once our lawyers organize the evidence and file a case against you.
Transform your B58 powered BMW M240, M340, M440 into a 475whp beast with our simple bolt-on performance package!
Save $298.99 when you purchase this package.
JB4® 475 Wheel Horsepower Gen2 B58 Package
Get up to 475 wheel horsepower while saving time and money with this easy to install package. Horsepower gains depend on fuel used.
Vehicle Fitment
BMW 2 Series
• 2022-Present G42 B58 BMW M240i, M240i xDrive, and M240xi
BMW 3 Series
• 2019-Present G20 G21 B58 BMW M340i, M340i xDrive, and M340xi
BMW 4 Series
• 2021-Present G22 G23 G26 B58 BMW M440i, M440i xDrive, and M440xi including Gran Coupe
Install guides can be downloaded from each products page.
Kit Includes
- B58 BMW JB4 Performance Tuner
- JB4PRO Bluetooth Adapter & Free JB4PRO App
- BMS Turbo Double Baffle Oil Catch Can for G Chassis B58 M240 M340 M440
- 6 NGK 96206 B58 Spark Plugs
- BMS Billet Spark Plug Gapper Tool (12mm)
- BMW - Magnetic Spark Plug Socket
- Specialty Spark Plug Feeler Gauge
- Official JB4® Logo Car Emblem/Badge
- Official JB4® License Plate Frame
- JB4 Magnetic Air Vent Phone Mount Holder
- White Burger Motorsports Logo Sticker Sheet (2 Pack)
- Choose one of our B58 intakes
- BMS B58 BMW M240i M340i M440i Competition Cold Air Intake
- BMS Silicone Front Mount Cold Air Intake for G Chassis B58 BMW
Recommended add-ons (sold separately, not included in package)
- BMS Billet Strut Cross Braces for G20 G21 G22 G23 G26 G42 BMW
- BMS Billet Oil Filter Cap for B58 BMW Engines
- Fuel-It! Bluetooth FLEX FUEL KIT for the B58 BMW M240i, M340i, & M440i
Dyno results 2020 BMW M340i

Handling
Orders shipped directly from our warehouse are usually processed the same business day if placed before 12 PM MST, and tracking details are provided within 1 business day.
For drop-shipped items, processing times may vary depending on the manufacturer, typically 3–5 business days. Tracking updates may take longer in such cases.
Expedited shipping applies only once the item is ready to ship.
Return
You have 30 days after receiving your order to request a return. Items must be unused, in original packaging, and include proof of purchase. Customers are responsible for covering the return shipping costs.
To start a return, email us at sales@palenonperformance.com. Returns sent without approval will not be accepted.
You can request a return directly from your account by selecting the return option on your order page. Here is the URL: https://shopify.com/55092379855/account/orders
Non-returnable items:
- Burger Motorsports (BMS) products
- Used items
- Air Intakes
- Hazardous materials, flammable liquids, or gases
- Discounted items and gift cards other than "PALENON PERFORMANCE" brand
Exchanges
Return the item and place a new order once approved.
Refunds
Approved refunds are issued to the original payment method. A restocking fee is 20% will be applied. Processing time depends on your bank or payment provider. The original shipping cost will not be refunded.
Cancellations
Canceled orders are subject to a 5% merchant fee (8% for Shop Pay installments). Custom, specialized items or pre-order items canceled within their lead time are also subject to this fee. Will also incur a 10% restocking fee.
Damaged or incorrect items
Inspect your order upon arrival and contact us immediately for assistance. If the wrong part was ordered, customer covers return shipping.
Disputes / Chargebacks
Our legal team is fully prepared to take stringent action against you for filing a baseless claim and initiating a fraudulent chargeback. This will lead to civil or criminal proceedings, which would require you to engage with our attorneys in our jurisdiction.
It is crucial to understand that filing a false chargeback is a serious offense, punishable by substantial fines or imprisonment. Potential penalties for fraudulent chargebacks can include one to three years in prison and fines ranging from $1,000 to $10,000. We treat all chargebacks with the utmost seriousness, regardless of the amount, as this is classified as a felony.
We will compose all necessary information to send your account to a collections agency and request that you be served once our lawyers organize the evidence and file a case against you.
Recently Viewed
Recommendation
5 Inch Gen 3 BMW B58 Racing Downpipe - 2025+ M340i, M440i, 540i, 740i, X3, X5, X6, X7
$545.00
$620.00
2015-2019 BMW F30 340i B58 Full Valve Performance Exhaust System | Palenon Performance
$2,568.00
$3,113.00
$623.00
$810.00
$405.00
$467.00
$1,090.00
$1,555.00
N26 & N20 Race Downpipe for F Series BMW 320i, 328i, 420i, 428i, 528i, 228i, 220i
$358.00
$452.00
$1,028.00
$1,245.00
$576.00
$732.00









