The VTT F3X Ultimate Rear Drag Brake Conversion Kit is the premier solution for BMW F-series owners looking to optimize their vehicle for competitive drag racing. This kit is specifically engineered to allow the fitment of 15-inch wheels on the rear, a necessary step for running high-traction drag slicks or radials. By replacing the bulky factory single-piston calipers with lightweight 4-piston Wilwood calipers, this system provides a significant reduction in unsprung weight, which directly translates to improved suspension response and faster ETs at the track.
Key Features
15" Wheel Compatibility: Specifically designed to provide the necessary clearance for most 15-inch drag wheels, such as the Weld RTS series.
Significant Weight Savings: Sheds up to 20 lbs of unsprung weight compared to the stock BMW rear brake setup.
Red 4-Piston Calipers: Includes high-performance Wilwood Dyna-Pro or Dyna-Lite calipers finished in a striking Red powder coat for both style and durability.
Plain Rotors: Utilizes high-quality Centric 125 Series plain rotors for consistent heat dissipation and reliable stopping power without the risk of cracking under heavy drag use.
Plug-and-Play Installation: Includes all necessary CNC-machined brackets, adapter fittings, and high-strength bolts for a direct-fit application.
Specifications
Caliper Weight: Approximately 4.5 lbs per side (including pads).
Rotor Weight: 14.4 lbs per rotor (Plain 15" conversion style).
Total Kit Weight: Approximately 37.3–37.8 lbs total (vs. ~56 lbs factory weight).
Rotor Material: High-carbon iron (Centric 125 Series).
Vehicle Compatibility: BMW F30, F31, F32, F33, F34, and F36 (F3X Platform).
Prop 65 Warning
Product Q&A
Lifetime Replacement
This product is not eligible for Lifetime Replacement
Fits These Cars
MAKE
MODEL
SUBMODEL
ENGINE
Special Fitment Notes
BMW
F30
340i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F30
340i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F32
440i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F32
440i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F33
440i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F33
440i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F34
340i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F36
440i
B58 3.0L
Use vehicle selector to confirm fitment
BMW
F36
440i xDrive
B58 3.0L
Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All
warranties, product application, fitment, and performance are the responsibility of Turner Motorsport.
For additional information see the terms of use.