VTT is happy to announce its new rear brake conversion kits for the E8X/E9X platforms. We take what already exists on the market, and make it much more complete, and much more performance-oriented while keeping the clearance for those 15 wheels. This kit replaces your rear brake rotors and calipers to fit 15 wheels. It includes lightweight Wilwood calipers to go from the single-piston factory caliper to race-inspired 4 Piston calipers. While dropping up to a whopping 20 LBS of unsprung weight off the back of your vehicle!

Please choose your model option to ensure proper rotor fitment.

PLEASE NOTE THE 135 CROSSED DRILLED ROTORS CURRENTLY ONLY FIT WITH NO E-BRAKE. THE PLAIN ROTORS WE HAVE FOR THE 135 FIT WITH THE E-BRAKE INSTALLED. IF ORDERING FOR A 135, AND YOU WANT TO RUN THE E-BRAKE CHOOSE PLAIN ROTORS.

The kit consists of:

• 2 Rotors (Plain or Cross drilled Or Slotted) Plain are Centric 125 Series, and Cross Drilled/Slotted are Genuine Stop-Tech rotors
• 2 Wilwood 4 Piston Calipers
• 1 set of high-performance Wilwood street pads. (option to remove the pads, and get your own compound pads)
• All hardware required for the swap, including brackets. bolts, and adapter fittings
• Stainless Steel upgraded rear brakes lines as an option

These kits will bolt directly on to the chassis specified, BUT many different 15 wheels in many different offsets exist, we cannot guarantee this will clear your wheel/tire combo without some clearance. We can 100% say they clear Weld RTS 1510 as this is what we tested on.

Conversion weight numbers:

Calipers with pads

Factory Rear Caliper 9.8LBS

Stock Style Rear 15 conversion caliper 8.2LBS

Wilwood Rear calipers 4.5LBS

Savings of 1.6 Lbs. per side or 3.2 lbs. total from the factory to stock conversion style

Saving of 3.7LBS per side or 7.4LBS Wilwood over stock style

Savings of 5.3 lbs. per side or 10.6 total from Factory Rear brakes to Wilwood 15 conversion

Brake Rotors

Factory Size Rotor 18.2LBS

Cross Drilled?Slotted 15 conversion rotor 13.5LBS

Plain 15 conversion rotor 14.4LBS

Savings of 4.7Lbs per side or 9.4 Lbs. total going from a factory rotor to 15 conversion cross-drilled

Savings of .9 LBS going cross-drilled 15 conversion over plain

Total savings

Factory rear brakes 56LBS

VTT 15 Plain Rotor Wilwood caliper 37.8 Lbs. Savings 18.2 Lbs.

VTT 15 Cross-Drilled/Slotted Rotor Wilwood Caliper 36 Lbs. Savings 20 Lbs.