StopTech Big Brake Kit Replacement 2-piece Aero-Rotors Friction Rings


StopTech Aero-Rotors are the best replacement rotors for StopTech Trophy and StopTech Big Brake kits.  All Aero-Rotors include the patented Aero-Rotor vane design.  Replacement Aero-Rotor part numbers include hardware which should be replaced when installing new friction rings.

Aero-Rotor Replacement Ring Instructions

Bare Iron

Best for use in performance motorsports environment.
Bare iron provides the most consistency as a friction surface.

Zinc Plated Iron

Best for corrosive environments such as those where road salt is used.

Left Slotted

Left Drilled

Right Slotted

Right Drilled

Left Slotted

Left Drilled

Right Slotted

Right Drilled

Most Commonly Used StopTech Big Brake Kit Aero-Rotors, in no particular order.

Caliper Specifications TableAero-Rotor Specifications Table

345x28mm StopTech Aero-Rotors (min. 26.5mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.626.1101.99 31.626.1102.99   Slotted 31.626.1107.99 31.626.1108.99
Drilled 31.626.1201.99 31.626.1202.99   Drilled 31.626.1207.99 31.626.1208.99

328x28mm StopTech Aero-Rotors (min. 26.5mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.326.1101.99 31.326.1102.99   Slotted 31.326.1107.99 31.326.1108.99
Drilled 31.326.1201.99 31.326.1202.99   Drilled 31.326.1207.99 31.326.1208.99

332x32mm StopTech Aero-Rotors (min. 30mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.536.1101.99 31.536.1102.99   Slotted 31.536.1107.99 31.536.1108.99
Drilled 31.536.1201.99 31.536.1202.99   Drilled 31.536.1207.99 31.536.1208.99

355x32mm StopTech Aero-Rotors (min. 30mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.737.1101.99 31.737.1102.99   Slotted 31.737.1107.99 31.737.1108.99
Drilled 31.737.1201.99 31.737.1202.99   Drilled 31.737.1207.99 31.737.1208.99

380x32mm Wide Annulus StopTech Aero-Rotors (min. 30mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.836.5101.99 31.836.5102.99   Slotted 31.836.5107.99 31.836.5108.99
Drilled 31.836.5201.99 31.836.5202.99   Drilled 31.836.5207.99 31.836.5208.99

380x32mm StopTech Aero-Rotors (min. 30mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.836.1101.99 31.836.1102.99   Slotted 31.836.1107.99 31.836.1108.99
Drilled 31.836.1201.99 31.836.1202.99   Drilled 31.836.1207.99 31.836.1208.99

380x35mm StopTech Aero-Rotors (min. 33mm)

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.846.1101.99 31.846.1102.99   Slotted 31.846.1107.99 31.846.1108.99
Drilled 31.846.1201.99 31.846.1202.99   Drilled 31.846.1207.99 31.846.1208.99

Special Use StopTech BBK Replacement Aero-Rotors

328x35mm StopTech Aero-Rotors (min. 33mm) - used only with the 328x35mm Corvette Race Big Brake Kit

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.346.1101.99 31.346.1102.99   Slotted 31.346.1107.99 31.346.1108.99
Drilled 31.346.1201.99 31.346.1202.99   Drilled 31.346.1207.99 31.346.1208.99

282x25mm StopTech Aero-Rotors (min. 23.5mm) - used on rear racing big brake kits applications

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.011.1101.98 31.011.1102.98   Slotted 31.011.1107.98 31.011.1108.98
Drilled 31.011.1201.98 31.011.1202.98   Drilled 31.011.1207.98 31.011.1208.98

355x35mm StopTech Aero-Rotors (min. 33mm) - used on select applications: Porsche, BMW X5, Nissan 350Z/Infiniti G35, Nissan Skyline

  Bare Iron     Zinc Plated
Left Right     Left Right
Slotted 31.747.1101.99 31.747.1102.99   Slotted 31.747.1107.99 31.747.1108.99
Drilled 31.747.1201.99 31.747.1202.99   Drilled 31.747.1207.99 31.747.1208.99

StopTech Aero-Rotor Replacement Drive Pin Hardware

Drive Pin hardware for replacement Aero-Rotors are included.  However should you need additional hardware kits, please see the appropriate hardware kit for your application.


Aero-Rotor Drive Pin Hardware kit
for 32mm and 35mm wide rotors
89.000.0001
Aero-Rotor Drive Pin Hardware kit
for 28mm wide rotors
89.000.0004
Aero-Rotor Drive Pin Hardware kit
for 25mm wide and narrower rotors
89.000.0002