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Home BMW 4 Series BMW G22/G23 (2021+) JB4 – 475 Wheel Horsepower Package for Gen2 B58 BMW
MK7/MQB Audi/VW Performance Fuel Pumps R8500,00
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JB4 - 600hp Package for S55 BMW M2C/M3/M4 R59990,00
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JB4

JB4 – 475 Wheel Horsepower Package for Gen2 B58 BMW

R39990,00

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Categories: BMW G20 (2019+), BMW G22/G23 (2021+), BMW G42 (2021+)
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Description

Transform your B58 powered BMW M240, M340, M440 into a 475whp beast with our simple bolt-on performance 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 JB4 Performance Tuner

JB4 Bluetooth Wireless Phone/Tablet Connect Kit

BMS B58 BMW M240i M340i M440i Competition Cold Air Intake

BMS Turbo Double Baffle Oil Catch Can for G Chassis B58 M240 M340 M440

6 NGK 94201 B58 Spark Plugs

BMS Billet Spark Plug Gapper Tool (12mm)

BMW / MINI – 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

 

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

BMW M340i dyno hp xdrive for lease 0-60 B58 engine JB4 tuned horsepower 

 
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