Stoptech 126.34147SR Disc Brake Rotor - Rear Right

StopTech Rear Right Slotted Rotor for BMW

StopTech Sport Slotted Disc Brake Rotors are direct replacement brake discs for factory brake systems and stock calipers. This rear right rotor is built for BMW applications that use a 344mm rear disc, including select 3 Series and 4 Series models, and it adds consistent braking feel with improved heat and dust management.

Part number 126.34147SR is a StopTech Sport Slotted Disc Brake Rotor engineered for drivers who want OE-style fitment with a performance-focused surface design. The slotted face helps maintain pad bite in wet and dry conditions while the coated hat helps resist corrosion.

Key Features

• Direct replacement disc brake rotor for factory brake systems and stock calipers
• Slotted surface helps disperse heat and brake dust
• Slotting helps reduce pad glazing and maintain bite
• Black e-coating helps protect against corrosion
• High carbon metallurgy in most applications for quieter operation and improved crack resistance
• Vented rotor design with straight vanes
• Rear right fitment for select BMW models with 344mm rear discs

Product Details

The StopTech Sport Slotted Disc Brake Rotors line focuses on replacement rotors that retain factory fit while adding a more performance-oriented friction surface. This rotor measures 13.543 inches in outside diameter, 0.945 inches nominal thickness, and 2.606 inches overall height. It uses a 5-lug pattern with a 120.000 mm bolt circle, a 75.000 mm center hole diameter, and a coated hat finish for added corrosion protection. Part number 126.34147SR is a rear right rotor for BMW vehicles equipped with M Sport Brakes, M Performance Brakes, or related 344mm rear brake setups listed below.

What It Helps Address

• Brake fade from repeated heat buildup
• Pad glazing that can reduce pedal consistency
• Brake dust accumulation on the rotor surface
• Corrosion on exposed rotor surfaces
• Reduced wet-weather braking response

Installation Notes

Verify rotor diameter, rear right position, and brake package before installation. This rotor is listed for 344mm rear disc applications and should be matched to the vehicle’s brake configuration, including M Sport Brakes, M Performance Brakes, or the caliper setup noted in the fitment data. Professional installation and proper bedding-in of new pads and rotors are recommended for consistent results.

Compatible With select BMW 330i, 330e, 330i xDrive, 340i, 428i, 435i, 440i, 328i, 335i, and ActiveHybrid 3 applications. Fits 2012-2020 BMW 335i, rear right; 2013-2015 BMW 335i xDrive, rear right; 2013-2015 BMW ActiveHybrid 3, rear right; 2013-2016 BMW 328i xDrive, rear right; 2014-2016 BMW 328i GT xDrive, rear right; 2014-2015 BMW 328d xDrive, rear right; 2014-2016 BMW 428i xDrive, rear right; 2014-2016 BMW 435i, rear right; 2014-2016 BMW 435i xDrive, rear right; 2014-2016 BMW 335i GT xDrive, rear right; 2015-2016 BMW 428i xDrive Gran Coupe, rear right; 2015-2016 BMW 435i Gran Coupe, rear right; 2015-2016 BMW 435i xDrive Gran Coupe, rear right; 2016 BMW 328i, rear right; 2016 BMW 330e, rear right; 2016 BMW 428i, rear right; 2016 BMW 428i Gran Coupe, rear right; 2016 BMW 340i, rear right; 2016 BMW 340i xDrive, rear right; 2017-2018 BMW 340i GT xDrive, rear right; 2017-2018 BMW 430i, rear right; 2017-2018 BMW 430i Gran Coupe, rear right; 2017-2018 BMW 430i xDrive, rear right; 2017-2018 BMW 430i xDrive Gran Coupe, rear right; 2017-2019 BMW 330i, rear right; 2017-2019 BMW 330i GT xDrive, rear right; 2017-2019 BMW 330i xDrive, rear right; 2017-2020 BMW 440i, rear right; 2017-2020 BMW 440i Gran Coupe, rear right; 2017-2020 BMW 440i xDrive, rear right; 2017-2020 BMW 440i xDrive Gran Coupe, rear right.

Quality Assurance

StopTech manufactures this rotor as a one-piece direct replacement disc with a coated finish and performance-oriented metallurgy used in most applications. Part number 126.34147SR is built to match the listed BMW rear brake configurations and support consistent braking performance in daily driving and spirited use.