Brakes› Brake Systems And Components

Stoptech

ST65/38-40-42/34

$1,028.58

SKU: S00M ACS.6PJ.0162

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

The StopTech Rear ST40 355 Big Brake Kit is a rear, 4-piston, balance-optimized big brake kit designed for BMW E60 and E63 models. It significantly improves braking performance with patented Balanced Brake Upgrade® technology, 355mm two-piece Aerorotors (slotted or cross-drilled, with or without zinc coating), 4-piston ST40 forged aluminum calipers with center bridge reinforcement, vehicle-specific piston sizes, and high-temp silicone brake boots. It includes 309 Sport pads for strong initial bite and consistent performance, and DOT-compliant stainless steel brake lines. Requires 18" wheels.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandStoptech
Part NumberS00M ACS.6PJ.0162

Videos

StopTech Brake Rotors, Hawk Pads, and, ECS Stainless Steel Lines - E92 335i

StopTech Brake Rotors, Hawk Pads, and, ECS Stainless Steel Lines - E92 335i
Stoptech Slotted Rotor and Pad Install on Subaru BRZ

Stoptech Slotted Rotor and Pad Install on Subaru BRZ
StopTech Rotors, HPS Pads and SS Brake Lines Installed on the NC Miata!

StopTech Rotors, HPS Pads and SS Brake Lines Installed on the NC Miata!
StopTech Street Performance Brake Pads REVIEW: BMW e46 track test.

StopTech Street Performance Brake Pads REVIEW: BMW e46 track test.
How to Replace BMW Brakes // StopTech Rotors & EBC Pads!

How to Replace BMW Brakes // StopTech Rotors & EBC Pads!
335i StopTech Brake Upgrade

335i StopTech Brake Upgrade
Stoptech BBK Brake Pad Change - Race Track Pads on a BMW E46 M3

Stoptech BBK Brake Pad Change - Race Track Pads on a BMW E46 M3
StopTech Street Slotted Rotors REVIEW - After 2 Years of Use on Dodge Charger

StopTech Street Slotted Rotors REVIEW - After 2 Years of Use on Dodge Charger
Stoptech Big Brake Kit Street Test and Install Notes

Stoptech Big Brake Kit Street Test and Install Notes

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.

View Full Return Policy