StopTech C43 Sport Ultra Lightweight Front Brake Kit - E36 M3

Front, 4-piston, ultra-light weight, balanced, brake upgrade for E36 M3 street/track cars

+ -
+ -
+ -
+ -
+ -
+ -
+ -
+ -

  •   
  •  

Price:
$4,409.91

The BimmerWorld View: The StopTech C43 brake upgrade is built for ultra light weight and to avoid adding more mass where it's simply not needed. The trend in brake kits has been "bigger is better" and that's just not the case all the time. Sometimes bigger brakes just add more weight without any appreciable gains in performance. The larger kits also suffer pad knockback and force you into a larger tire/wheel for clearance. It's time to re-focus braking performance on what counts!

StopTech C43 Sport for E36 M3 features -
  • Super-focused on light weight and performance
  • 50% lighter than ST40 caliper
  • Patented Aerorotors with directional cooling vanes
  • Smaller diameter rotor for lower weight and MOI with less pad knockback
  • Super-thick rotor does not give up any cooling capacity
  • Fits under 17" wheels
  • Sport kit: Sport pads, traditional slot pattern, and anti-rattle hardware
The C43 caliper is a 4-piston layout, forged from aluminum, sized and machined to minimize weight. The C43 is 50% lighter than a ST40 caliper and even lighter than the Trophy kit! Stainless steel piston noses and anti-knockback springs are optional. A single bridge bolt saves weight and reduces pad change times. C43 calipers do not include dust boots so street use should be minimized. Pads are 20mm thick and the shape is shared with AP and Wilwood calipers (Pagid 2206 and PFC 7551). Note: caliper photos may not be updated to reflect the latest coating. StopTech is transitioning from grey hardcoat to Nickel plating.

Rotors are 2-piece 309x32mm with a slot pattern. The diameter is kept small to reduce MOI (Moment of Inertia) and prevent the pad knockback so pervasive in oversized Big Brake Kits. The 32mm thickness contains more than enough cooling capacity for these cars. The rotors feature StopTech's patented Aerorotor directional vaning pattern that expels hot air to keep the rotor cool and your braking performance on point. Aerorotors are specifically designed to circulate cooling air and cool the brakes faster. This leads to more consistent braking performance, less heat soak throughout the system, and longer pad life. Sport CBK kits come with anti-rattle hardware on the hat.

StopTech's C43 caliper is the result of years of R&D in road racing and short-track circle racing, which is a merciless proving ground for brakes. With R&D input and testing from BimmerWorld, StopTech has made this caliper design available for limited BMW applications through BimmerWorld. BMW C43 kits feature all of the great advantages of a regular StopTech Big Brake Kit: the Balanced Brake Upgrade(R) approach that optimizes brake distribution to improve traction at all four corners, patented rotor cooling vanes for longer pad life and less fade, and the stiffest caliper designs in the industry.

Aerorotor SizeFloating HardwareAnti-Rattle HardwareCaliper WeightDust BootsIncluded Brake Pad TypeStainless Brake Lines
Trophy Sport332 or 355mmXX~105ozX309 SportX
C43 Sport309mmXX~68oz309 SportX



C43 calipers do not use dust boots on the caliper pistons and are only sold for racing or exclusive track activity only. Caliper dust boots play a key role in preventing debris from damaging the inner piston seals and causing a very dangerous loss in brake pressure. As with any racing braking system, periodic rebuilds and regular fluid changes using an appropriate fluid are strongly advised.

C43 calipers are only available in dark-grey military-spec hardcoat.

CBK kit comes with StopTech pads. Pagid (2206) and PFC pads (7551) are also available. Replacement rotor rings are also available.

Best Price Guarantee!
BimmerWorld StopTech pricing will not be beat! If you found a lower published price elsewhere, call or email us and we will meet it or beat it!

BMW Fitments:

3 Series
E36 (92-99) > M3 (1995)
E36 (92-99) > M3 (96-99)
Recently Viewed Products