SKU: 35821683838

Maxton Design Street Pro Rear Diffuser BMW 3 M-Pack G20 / G21 (M340I)

Sale price$134.10 Regular price$149.00
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 31 - Sep 5

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Description

Maxton Design Street Pro Rear Diffuser BMW 3 M-Pack G20 / G21 (M340I)PRODUCT DETAILS PRODUCT VERSION PRODUCT CODE COMPATIBLE FIT STREET PRO REAR DIFFUSER BMW 3 M PACK G20 G21 (M340i) BM321MPACKCNC RS1 BMW 3 M Pack (M340i) G20 G21 2019 2022 Maxton Design products will not only provide visual enhancement, but will also improve aerodynamics of your car by increasing downforce. We ensure perfect fitment of the product by 3D laser scanning every make and model that we design. Our parts are made of ABS plastic that is also

PRODUCT DETAILS  

PRODUCT VERSION

PRODUCT CODE

COMPATIBLE FIT

STREET PRO REAR DIFFUSER BMW 3 M-PACK G20 / G21 (M340i)

BM321MPACKCNC-RS1

BMW 3 M-Pack (M340i) G20 / G21 2019 - 2022  

Maxton Design products will not only provide visual enhancement, but will also improve aerodynamics of your car by increasing downforce. We ensure perfect fitment of the product by 3D laser scanning every make and model that we design.  
Our parts are made of ABS plastic that is also primarily used in OEM parts throughout the automotive industry due to its impact, scratch resistance and shock absorbance characteristics. Give you car a new sharp look that will be the envy of all your friends and other drivers. Start your adventure with Maxton Design’s visual tuning that is second to none in unique design and quality. 

PRODUCT FEATURES

  • Racing Durability Central Rear Diffuser MADE OF ABS PLASTIC
  • MOUNTING KIT 
  • MOUNTING MANUAL
  • More durable material, 10 mm thick ABS plastic plate
  • Able to withstand more impact and scratch damage
  • Lack of metal elements prevents any corrosion of the part
  • New design with stylish edge finish
  • UV protective coating
  • Resilient to weather elements, can withstand high and low temperatures
  • Product is secured with the protective foil
  • No painting necessary
  • Products can be manufactured in the following options: 10 mm thick matte black, 10 mm thick matte black with red core,
  • If you decide to color paint the part, primer must be used prior to the painting
  • Parts are labeled confirming authenticity and quality of the product

      We highly recommend installation of all our products with professional auto body shops experienced in installation of visual modifications.

      Shipping Notes
      • Free Standard Shipping on $100+ Orders to the USA.
      • Except Preorder products are shipped in 48 hours.
      • Delivery to the USA:
      1. 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
      SKU: 35821683838

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      4.1 ★★★★★
      Based on 22 reviews
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      Laura
      Los Angeles, US
      ★★★★★ 5
      Size up
      Size: 6-7, Color: Under the Sea, Size: 6-7, Color: Under the Sea
      My 5 year old is at the 50th percentile for weight, and the size 6 fits him perfectly. Almost too perfectly. I wish I would’ve bought a size up, so he could grow into them. Material is soft but strong. Overall happy.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on April 26, 2026
      E
      Verified Purchase
      Elizabeth
      Grantham, US
      ★★★★★ 5
      Comfy!
      Size: 6-7, Color: Pale Aqua Blue/Red/White/Stripe/Yeah
      Perfect for my 5 year old, he loves his new shorts jammies!!
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on May 4, 2026
      G
      Verified Purchase
      Gui
      Phoenix, US
      ★★★★★ 3
      Too tight
      Size: 4T, Color: Under the Sea
      Very very very small. My 3yo is very skinny and the 4t it is too tight on him. Can't imagine how this would fit a less skinny kid.
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on May 2, 2026
      Y
      Verified Purchase
      Yane
      Grantham, US
      ★★★★★ 5
      Bellas
      Size: 13 Little Kid, Color: Pink/Glitter
      Son una belleza quedan muy lindas puestas se las recomiendo para las niñas de la casa
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on October 7, 2025
      F
      Verified Purchase
      Flor
      Omaha, US
      ★★★★★ 5
      Comodas
      Size: 2 Big Kid, Color: Black/Beige, Size: 2 Big Kid, Color: Black/Beige
      Muy cómodas , cojen el estilo q te pongas. Vienen súper reducidas. Tuve q comprarle un #5 a mi niña con 22cm de largo. A pesar de q llegaron con un polvo blanco, parecían usadas, pero en general super
      WAS THIS REVIEW HELPFUL?YesReportShare
      Reviewed in the United States on July 22, 2025

      recommand products