BMW F3x F2x Rear 15 Inch Wheel Brake Conversion Kit

New rear brake conversion kit for your F3x F2x BMW. This will allow you to run 15-inch wheels and tires on the rear of the car, perfect for drag and roll racing purposes. Using lightweight Wilwood Dynapro 4-piston calipers you won't have to sacrifice stopping power. 

Even if you aren't looking to run a 15-inch wheel this is still a very good upgrade over the stock 1-piston calipers! Contact us if you want to run a larger rotor on this kit instead of the standard rotor.

What's Included in the Kit:

• 2 Wilwood 4 Piston Calipers (Red, Black, Grey)
• 2 Zimmerman Rotors (Drilled or Plain) 
• Rear set of high-performance Wilwood BP-10 Pads (Or source your own)
• All brackets and hardware required for installation
• Stainless Steel upgraded rear brakes lines (Optional)

Weigh Reduction Numbers:

Calipers with pads

Factory Rear Caliper 11.5lbs

Wilwood Rear Calipers Dyna-Pro 4.5lbs

Brake Rotors

Factory Size Rotor 18.2lbs

Slotted 15” conversion rotor 14lbs

Plain 15” conversion rotor 14.6lbs

Saving 8.4-7.2lbs Rotational Weight

Total savings

Factory rear brakes – 56LBS

15″ Plain Rotor Wilwood Caliper 38.2lbs Saving 17.5lbs Unsprung Weight

15” Drilled Rotor Wilwood Caliper 37lbs. Saving 19lbs Unsprung Weight

If you are planning on running a 15-inch wheel you must remove the rear brake dust shield and grind the small casting on the rear traction links.