Stoptech Rear Big Brake Kit | 2014-2015 BMW M3/M4 (83.B38.0058.21) Stoptech

Rear Big Brake Kit by Stoptech

They feature fully forged calipers with patented stiffening bridges, patented 2-piece AeroRotors for optimized cooling, braided stainless steel brake lines, performance brake pads, mounting brackets and all necessary hardware to complete the installation. StopTech Big Brake Kits were the first Balanced Brake Upgrades on the market, offering optimized brake bias to utilize all the traction available from all four tires.

Features

• Caliper Color: Blue
• Caliper Construction: Fixed
• Caliper Type: 4-Piston
• Caliper Series: ST-41
• Minimum Wheel Diameter Required: 482.6mm (19″)
• Driving Style: Performance / Racing, Track Only
• Rotor Thickness: 32mm (1.26″)
• Outside Diameter: 380mm (14.96″)
• Rotor Construction: 2-Piece
• Rotor Material: Cast Iron
• Rotor Style: Slotted
• Rotor Type: Vented
• Rotor Coating: W/O Coating
• Rotor Finish: Slotting, No Coating
• Series: Performance

Benefits

• Stiffest aftermarket caliper available gives a consistent firm pedal
• Fully machined and lightweight for track action
• Fully forged and extremely stiff for firmer brake pedal feel
• Meticulously engineered 2-piece design reduces flex
• Patented, removable center bridge further resists yaw(flex)
• Carefully selected piston sizes for precise torque output
• Specifically engineered and patented AeroVanes for optimum cooling
• Patented, billet 7075 aluminum AeroHats for improved airflow
• Full-floating mounting hardware to eliminate pad knock-back
• Optimized to provide even performance and consistent feedback
• Hard-anodized hats are impervious to color change or fading
• Stainless steel studs secured with set screws for strength and durability
• Fully machined aluminum or steel that is precise and strong
• Application specific design for precise and proper fitment
• Stainless steel braiding for lower compliance and extra protection
• A variety of fittings for hundreds of applications
• All necessary brackets and fasteners for easy installation
• Better brake modulation
• Patented design with directional stand offs between the rotor and mounting bell
• Increases airflow by 50%-100% over traditional 2-piece designs
• Increased airflow reduces the temperature difference between the inside and outside rotor faces
• Results in less distortion and better performance compared to other fully floating designs
• Outer pad wear is reduced

Applications

• 2014 – 2015 BMW M3/M4

What’s In The Box?

• 1 – Rear Big Brake Kit

Warranty

• Manufacturers Standard Warranty