VTT ultimate F9X X3/4 ultimate rear brake conversion kit
VTT is happy to announce its new rear brake conversion kits for the F9X platforms. This is the FIRST and only kit currently on the market that will allow 17" wheels and tires to be run on the rear. This kit replaces your rear brake rotors and calipers to fit 17" wheels. It includes GENUINE BMW calipers that RETAIN full parking brake function. This means no downside, 17" wheel fitment, parking brake functionality, no loss of braking power, 26.4LBS unsprung/rotating weight removed.
The kit consists of:
- 2 Wilwood Spec 37 HD rotors
- 2 Genuine BMW Calipers
- New HD brake pads
- All hardware required for the swap, including brackets. bolts, and adapter fittings
These kits will bolt directly onto the chassis specified, BUT many different 17" wheels in many different offsets exist, we cannot guarantee this will clear your wheel/tire combo without some clearance.
Please note You must remove the rear brake dust shield. This is 100% reversible
F9X X3/4M Conversion weight numbers:
FRONT
- Factory caliper 18.3lbs
- Factory rotor 36.2lbs
- Total factory weight 54.5lbs
- VTT caliper and bracket 5.3lbs
- VTT rotor and hat 12.8lbs
- Total VTT weight 18.1lbs
- Per side weight savings 36.4lbs
- Total un-sprung weight savings 72.8lbs
- Rotating weight savings 46.8lbs
REAR
- Factory rear rotor 18lbs
- Factory rear caliper 15.1lbs
- Total factory weight per side 33.1lbs
- VTT rotor and hat 12.4lbs
- VTT caliper 8.8lbs
- Total VTT weight per side 21.2lbs
- Per side weight savings 11.9lbs
- Total Un-sprung weight savings- 23.8lbs
- Total Rotating Weight savings 11.2lbs Rotating
TOTAL SAVINGS
- Total un-sprung weight Savings 96.6lbs
- Rotating Weight savings 58lbs