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StopTech

Rear Big Brake Kit w/ AeroRotors

$3,199.20

SKU: 83.B33.004G

In Stock
In Stock
Ships by Aug 4
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30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The StopTech 83.B33.004G rear big brake kit is engineered to significantly enhance your vehicle's braking performance. These Balanced Brake Upgrades maintain factory bias while delivering shorter stopping distances, improved modulation, and reduced brake fade, making them ideal for performance driving. The kit includes fully forged ST40 calipers with patented stiffening bridges for increased rigidity, and 345 x 28 mm 2-piece slotted AeroRotors designed for optimal cooling. Also included are StopTech Street Performance Brake Pads and braided stainless steel brake lines, along with all necessary mounting brackets and hardware for a complete installation. This kit is compatible with a specific range of BMW models, including the 2012-2015 BMW 335i Base, 2013 BMW 335i xDrive Base, 2014-2015 BMW ActiveHybrid 5/3/7 Base, and various 2014-2020 BMW 4 Series models (435i, 435i xDrive, 435i Gran Coupe, 435i xDrive Gran Coupe, 440i, 440i xDrive, 440i Gran Coupe, 440i xDrive Gran Coupe). Please note that the AeroRotors may not fit stock wheels, and confirming wheel diameter, width, offset, and hub bore is recommended before purchase.

MIA's Description

The StopTech 83.B33.004G is a rear big brake kit designed to maintain factory bias while providing shorter stopping distances, better modulation, and reduced brake fade. It features fully forged calipers with patented stiffening bridges and 2-piece AeroRotors for optimized cooling. This kit includes StopTech Street Performance Pads and stainless steel brake lines to complete the installation.

Fitment

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Specifications

BrandStopTech
Part Number83.B33.004G
CategoryBrakes

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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