Home

Explore

View Cart

Deals

Saved

Suggested searches

Plant-based protein powders
Vegan leather handbags
Bedroom decor
Waterproof jackets
Hoodies

Learn more about how we use your data to personalize your experience and ads. Recommendations are for informational purposes only.

SL

SPEED LOGIC

Products

Products

SPEED LOGIC

JB4 Tuner BMW B38/B46/B48

4.5 (1,234)

Sold 100+ last 30 days

20% off first order

$529.00

Color

Black

Quantity

Product description loading

Product description loading

This is the product description text that will appear here.

Shop is the next step on our mission to make commerce better for everyone.

Start selling

For brands

For creators

Build your store

Information

Shop Pay

Help center

Social

X (Twitter)

Instagram

Legal

Terms of Service

Privacy Policy

Your Privacy Choices

Powered by

|

Start selling for free

Language

© Shopify Inc. 2026

Quantity

1

Description

Power gains of up to 100HP on a stock vehicle without the risks of flashing! The JB4 is the most advanced and highly featured tuning system available for your B38, B46, and B48 powered BMW. Power gains are up to 40hp to the wheels (55hp cra...

Delivery & Returns

SPEED LOGIC

SPEED LOGIC

5 (13)

More from SPEED LOGIC

JB4 Tuner N55 F Chassis

JB4 Tuner N55 E Chassis

JB4 Tuner for S63 F9x M5/M8/X5M/X6M

JB4 Tuner N54 BMW

JB4 Tuner for S58 Engine for 2021+ BMW G80 M3, G82 G83 M4, & 2023+ G87 M2

NGK 96206 Laser Iridium Spark Plugs for BMW S58 & BMW B58 Gen 2 Engines (SILZKGR8E8S)

(2)

MHD Super License for N54 Engine

(1)

MHD Universal WIFI Adapter (E/F/G Series + Supra MKV)

MHD Super License for Toyota Supra B58 Engine

MHD Super License for F+G Series BMW B58 Engine

(1)

MHD Super License for F-Series S55 Engine

SPEED LOGIC Wheel Spacers for BMW G Series or G Chassis w/ 10 Extended Bolts

Related to SPEED LOGIC

Chemical Guys

Exclusive offer available

Heavy Duty Water Spot Remover

(286)

Workhorse Professional Grade Microfiber Towel 3-Pack

(838)

Round Decal Sticker

(69)

39% off

Express Wash Touch-Up & Shine Kit

(77)

Chenille Wash Mitt

(367)

Total Interior Cleaner & Protectant

(674)

Nonsense Invinsible Super Cleaner

(372)

Premium Grade Microfiber Applicators

(571)

VRP Vinyl, Rubber, Plastic Protectant

(522)

Boar's Hair Detailing Brush

(295)

Streak Free Window Clean Glass Cleaner

(346)

Heavy Duty Ultra Clear Detailing Bucket, 4.25 Gal

(260)

TruCrane Motorsports

4.8

(231)

12% off

TCM Mini Cat O2 Spacer - Defouler

(7)

40% off

Genuine BMW 3.5″ Turbo to Downpipe Gasket 18307553601 for BMW N54/N55/S55/N63/S63/S58

(8)

Core4 Motorsports "FLug" Nut (Floating Collar "Wobble" Lug Nut)

18% off

Genuine BMW 4″ Turbo to Downpipe Gasket 18307581970 for BMW B38/B46/B48/N20/N26/N55

(12)

42% off

Genuine BMW 4″ Turbo to Downpipe V-Band Exhaust Clamp for BMW B38/B46/B48/N20/N26/N55 18307606136

(14)

27% off

TCM Turbo Inlet Pipe BMW N20/N26 F2X/F3X 220i/228I/320i/328I/420i/428I X1/X2

(10)

27% off

Genuine BMW 3.5″ Turbo to Downpipe V-Band Exhaust Clamp for BMW N54/N55/S55/N63/S63 11657620508

(6)

13% off

TCM Charge Pipe Kit BMW B46/B48 F and G Chassis

(1)

32% off

TCM B58 4.5" Race Downpipe BMW 240i/340i/440i/Supra/X3 F/G Chassis

(7)

Elring 4.5" Turbo to Downpipe V-Band Exhaust Clamp for BMW B58 18328612537

3% off

PTB-Racing / Wagner-Tuning Twin Disc Clutch Kit for BMW G80/G82/G87 M2/M3/M4 S58

(2)

$2,210.00$2,290.00

48% off

TCM Aluminum Skid Plate BMW G80 G82 G83 G87 M2/M3/M4 S58

(7)

Recambios y accesorios originales y compatibles para tu BMW, MINI y Motorrad

4.2

(1.7K)

43% off

Emblema logo BMW 82mm (capó o maletero). BMW Original

(63)

€27.79€48.65

Clips / Grapas Para Los Embellecedores Las Puertas Bmw E46 E90 E91 E92 E93. Original Recambios

23% off

Clips / Grapas para los embellecedores las puertas, para BMW E46 E90 E91 E92 E93. Original BMW

(4)

Boquillas/tacos/gomas Para Emblema Capó/maletero. Producto Original De Bmw Recambios

26% off

Boquillas/Tacos/Gomas para emblema Capó/Maletero. Producto original de BMW

(11)

36% off

Emblema logo M para laterales (aletas). Original BMW

(28)

€14.28€22.42

Parasol Delantero BMW con Diseños Deportivos - detalle_logo Escena 2

45% off

Parasol Delantero BMW con Diseños Deportivos

(1)

€42.90€78.00

48% off

Emblema logo M de Bmw para maletero trasero. Original BMW

(40)

€25.89€49.90

Funda volante efecto carbono ///M para volante BMW

23% off

Funda volante efecto carbono ///M para volante BMW

(46)

€45.99€59.99

33% off

Tapabujes / Centro llantas logo BMW 68mm (standar). BMW Original.

(24)

€36.95€54.80

59% off

Emblema adhesivo logo BMW 50 Aniversario para las llaves originales de BMW.

¡La caja regalo misteriosa perfecta para regalar y sorprender a cualquier amante de BMW!

17% off

¡La caja regalo misteriosa perfecta para regalar y sorprender a cualquier amante de BMW!

(3)

€25.00€30.00

Extensor de Clip para Cinturón de Seguridad BMW con Logotipo Performance - Accesorio de Alta Calidad

17% off

Extensor de Clip para Cinturón de Seguridad BMW con Logotipo Performance - Accesorio de Alta Calidad

€16.80€20.16

47% off

Emblema logo BMW 74mm (capó o maletero). BMW Original

(15)

€25.99€48.99

Speedzone Performance LLC

4.6

(629)

SPDZ1 x BallFix Racing Quick Release Battery Cable Disconnect – Billet Side Terminal

(5)

Mini GT Diecast Collection

(2)

Ghost Key - Plug and Play Push to Start Conversion Kit for Honda & Acura

(5)

23% off

Kaido House Diecast Collection - New Products Weekly!

(3)

11% off

Mr. Gasket 78091G Thread Locking Compound

23% off

SPDZ1 90° Degree O2 Extension Adapters/Spacers Lambda/Oxygen Sensor

(4)

27% off

SPDZ1 Long Tube Headers - VQ35DE/HR - Nissan 350Z Z33 370z / Infiniti G35 G37 (PRE-ORDER ETA END OF JUNE)

(13)

FUEL RIVET SNAP-IN 8.7MM LENGTH M-BLK

FUEL RIVET SNAP-IN 8.7MM LENGTH M-BLK

34% off

SPDZ1 16-23 Infiniti Q50 Q60 3.0T Twin Turbo Lower Downpipes VR30DDTT Q50 Q60 400Z VR30

(2)

28% off

SPDZ1 K Series Header Downpipe 12-15 Civic Si & 13-15 Acura ILX Stainless Bellmouth

(2)

Main Relay Conversion with Kill Switch

(3)

11% off

Ghost Lock & Ghost Power combo deal

(3)

Discover top brands

Aviator Nation

Exclusive offer available

Aviator Nation

4.5 (93.4K)

Culture Kings US

Culture Kings US

Culture Kings US

4.7 (148.5K)

Fashion Nova

4.3 (428.9K)

Rockstar Original

Rockstar Original

Rockstar Original

4.6 (186.5K)

Little Sleepies

Exclusive offer available

Little Sleepies

4.9 (403.4K)

Mandala Scrubs

Exclusive offer available

Mandala Scrubs

4.6 (11.4K)

OOFOS

Exclusive offer available

OOFOS

4.5 (178.2K)

Revice

4.5 (8.7K)

32 Degrees

4.7 (228K)

Exclusive offer available

The GLD Shop

4.7 (169.7K)