KSport braking systems

Big Brake Kits

Compare KSport big brake kit systems, then match the exact kit to your vehicle, axle and wheel clearance.

Fit the car. Clear the wheel.

Explore Big Brake Kits

Orange KSport x8 caliper and brake rotor on display at SEMA 2019 — KSport brake display at SEMA 2019. Product selection and finish depend on application.

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Select your year, make and model to see compatible products and current availability.

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The Big Brake Kits guide

Choose the right brake system.

Start with how you use the car. Rotor size, caliper configuration and wheel clearance are application-specific.

KSport orange calipers, cross-drilled two-piece rotors, pads, lines and hardware

Street + track-day upgrade

Procomp

An application-specific axle kit with multi-piston calipers and two-piece rotors. Start here for a conventional big brake upgrade.

From $1,870.81Availability varies by application

Explore Procomp

Larger hardware + floating rotors

Supercomp

Larger calipers, rotors and pads than Procomp, with full-floating two-piece rotors. Check the available configuration and wheel clearance.

From $2,444.12Availability varies by application

Explore Supercomp

Drift + rally

Dualcomp

A rear four-piston caliper with separate foot-brake and hydraulic handbrake circuits. Choose it for a dedicated drift or rally setup.

From $2,836.39Availability varies by application

Explore Dualcomp

Limited wheel clearance

Slimline

A narrow, single-side three-piston front caliper for wheels with limited clearance. Confirm fit with the correct wheel template.

From $2,474.30Availability varies by application

Explore Slimline

Photography shows representative hardware. Exact mounts, kit contents and options are confirmed on the application page.

Before you order

Fit the car.
Clear the wheel.

Choose the axle

Brake kits are sold for a specific axle. Match the vehicle and front or rear position before choosing a kit.

Check wheel clearance

Wheel diameter alone does not establish clearance. Confirm the rotor and caliper configuration using the application’s wheel template.

Match the details

Review rotor style, caliper finish and pad choices on the exact application. A technician can help with the combination.

Shop big brake kits by vehicle Compare brake caliper colors Get sizing help

Parts & applications

All big brake kits applications

Showing 6,441–6,460 of 12,103 results

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Big Brake Kits / Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Drilled Rotors - Supercomp

BKMD221-961CO

$4,586.51Available to order

Big Brake Kits / Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Slotted Rotors - Supercomp

BKMD221-961SO

$4,586.51Available to order

Big Brake Kits / Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 16.6 in. Drilled Rotors - Supercomp

BKMD221-971CO

$5,793.48Available to order

Big Brake Kits / Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 16.6 in. Slotted Rotors - Supercomp

BKMD221-971SO

$5,793.48Available to order

Big Brake Kits / Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13 in. Drilled Rotors - Slimline

BKMD240-332CO

$2,715.69Available to order

Big Brake Kits / Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13 in. Slotted Rotors - Slimline

BKMD240-332SO

$2,715.69Available to order

Big Brake Kits / Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13.8 in. Drilled Rotors - Slimline

BKMD240-342CO

$3,138.14Available to order

Big Brake Kits / Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13.8 in. Slotted Rotors - Slimline

BKMD240-342SO

$3,138.14Available to order

Big Brake Kits / Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Drilled Rotors - Procomp

BKMD240-831CO

$2,112.21Available to order

Big Brake Kits / Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Slotted Rotors - Procomp

BKMD240-831SO

$2,112.21Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Drilled Rotors - Supercomp

BKMD240-836CO

$2,444.12Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Slotted Rotors - Supercomp

BKMD240-836SO

$2,444.12Available to order

Big Brake Kits / Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Drilled Rotors - Procomp

BKMD240-841CO

$2,534.65Available to order

Big Brake Kits / Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Slotted Rotors - Procomp

BKMD240-841SO

$2,534.65Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Drilled Rotors - Supercomp

BKMD240-846CO

$2,866.57Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Slotted Rotors - Supercomp

BKMD240-846SO

$2,866.57Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15 in. Drilled Rotors - Supercomp

BKMD240-951CO

$3,862.32Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15 in. Slotted Rotors - Supercomp

BKMD240-951SO

$3,862.32Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Drilled Rotors - Supercomp

BKMD240-961CO

$4,586.51Available to order

Big Brake Kits / Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Slotted Rotors - Supercomp

BKMD240-961SO

$4,586.51Available to order

Big brake kits: choose the system, not just the rotor size

What does a big brake kit change?

A big brake kit replaces selected factory brake components with a matched upgrade for a particular vehicle and axle. A kit typically combines calipers, rotors and the hardware needed to position them correctly; pads, hoses and other contents depend on the listing. It is a system choice, not simply a larger disc fitted to the existing caliper.

A larger effective rotor radius gives the brakes more leverage. A rotor with greater thermal capacity can also handle more energy before its temperature rises as far. Those characteristics matter during repeated braking, where controlling heat is a major part of consistent performance. They do not promise that any larger kit will shorten every stop: tires, road surface, brake balance and the rest of the car still matter.

When does a big brake kit make sense?

Start with the problem you want to solve. Worn factory brakes need proper service before they need a larger caliper. For a mainly street-driven car, suitable pads, healthy rotors and the correct fluid may address the actual need without a complete conversion. A recurring heat problem during repeated hard use calls for a broader look at pads, cooling and brake-system capacity.

Choose a kit around the vehicle, axle and intended use. The caliper, rotor, pad and mounting arrangement need to work together and with the car's brake system. More pistons or a larger diameter is not a ranking that makes every other consideration disappear. Identify the available application first, then compare its specifications and service requirements.

Rotor diameter, thickness and construction

Diameter affects the rotor's leverage and the space required inside the wheel. Thickness, mass and ventilation also affect how it deals with heat. Two rotors with the same diameter are not necessarily interchangeable: thickness, offset, mounting arrangement and pad contact area matter as well.

A one-piece rotor combines its friction ring and center in one casting. A two-piece design uses a separate friction ring and center, often called a bell or hat. The connection can be fixed or allow controlled movement, depending on the design. Compare the actual construction and replacement parts instead of assuming every two-piece rotor floats or every larger rotor weighs less. Treat drilled, slotted and plain surfaces as part of the use-specific choice, not a substitute for correct size and compatibility.

Will the kit fit behind your wheels?

Wheel diameter alone cannot confirm brake clearance. The inner barrel must clear the rotor and caliper, and the back of the spokes must clear the caliper's outward profile. Wheel offset, spoke shape and the position of balance weights can change the available room. Two wheels carrying the same nominal size can therefore give different results.

Use the clearance drawing or template for the exact brake application against the actual wheel. Follow its scale and measurement instructions and check the required clearance throughout the relevant profile. Do not order from a diameter rule of thumb or assume a spacer is an approved cure. KSport's brake-system support explains how to request a template when you need one.

Pads: street comfort and track temperature

Pad compound changes how the brakes respond across their operating temperatures. A street-focused choice needs useful cold response as well as manageable noise, dust and wear. A track-focused compound may prioritize high-temperature performance and accept compromises that are unpleasant on the commute. A pad being called racing does not automatically make it the best choice for normal road use.

Match both the compound and the pad shape to the installed caliper. Similar dimensions or a shared brand name do not establish a cross-reference. Ask about the actual driving you do, including whether the same pads will see street miles and track sessions. Follow the bedding instructions supplied for the selected pads and rotors rather than using a generic procedure for every friction material.

Street and track are different jobs

For street use, compare cold response, pedal feel, noise, dust, corrosion exposure and replacement-part availability. For track use, include repeated braking energy, cooling, pad temperature range and inspection intervals in the plan. A car that does both needs an explicit compromise or a planned change of suitable consumables, rather than the assumption that one extreme setup is ideal everywhere.

Front and rear choices must preserve an appropriate system balance. They are not interchangeable, and a rear-only appearance upgrade is not a complete brake plan. Confirm the vehicle-specific kit, axle, hydraulic compatibility and any parking-brake requirements. Retain the exact application's restrictions instead of applying a statement from another car's kit.

Comparing KSport kit families

Use Procomp, Supercomp, Dualcomp and Slimline as the starting comparison pages, then open the matching vehicle application. Compare the listed axle, caliper, rotor, included components and options. A family name does not confirm wheel clearance or the contents of a particular order.

Keep service parts separate from complete kits while shopping. A replacement rotor, caliper, pad set or line is for a known system; it is not enough to complete a conversion on its own. For an existing KSport setup, record its part numbers before choosing replacements. The caliper-finish guide covers appearance choices separately from the fit and operating requirements.

Installation, bedding and ongoing care

Have a qualified brake installer work from the instructions for the exact kit. Installation includes verifying the mounting and clearances, correct hose routing, the specified fluid and bleeding procedure, and the required checks before the car returns to use. Bedding prepares the pad-and-rotor interface; it does not fix incorrect hardware or an unresolved installation problem.

After installation, follow the supplied inspection and service instructions. Track use can require more frequent checks and a different consumable plan than normal commuting. Keep the kit, pad and rotor identifiers with the car so replacements can be matched accurately. Use brake-system support when a specification or replacement reference is missing.

Budget for the complete change

Compare the current live KSport price for the exact vehicle, axle and selected options. Include installation, fluid, any application-required supporting work and the ongoing cost of compatible pads and rotors. Check your wheel-clearance plan before buying the kit; discovering that a wheel does not fit can change the entire project.

The useful final comparison is a complete installed system that suits your driving. Start with the vehicle finder, read the application and contents, and use the exact clearance information. If one of those is missing, ask KSport with the vehicle, wheel details and proposed part number so the missing fact can be resolved before ordering.

Brake kit questions answered

Will a big brake kit stop my car faster?

Not automatically. More brake leverage and heat capacity can help the right system, especially during repeated braking, but stopping distance also depends on tires, road conditions and the complete vehicle; no universal reduction is promised.

Will a kit fit inside my wheels?

Use the exact kit's clearance drawing or template against your wheel. Wheel diameter alone does not confirm barrel or spoke clearance; request the application template if it is missing.

Are more pistons always better?

No. Piston count alone does not describe brake torque, balance, stiffness or compatibility. Compare the complete caliper-and-rotor system designed for your vehicle and axle.

Do I need both front and rear kits?

Not every upgrade requires both axles at once. Follow the approved vehicle-specific plan and preserve brake balance; front and rear kits are not interchangeable, and a rear-only change needs particular care.

Can I use track pads on the street?

Only if the particular compound is suitable for street use. Some competition pads trade cold response, noise or wear for high-temperature performance, so match the compound to the driving you actually do.

Do new pads and rotors need bedding?

Yes, follow the bedding instructions for the selected parts after installation checks are complete. A generic bedding routine cannot correct an installation fault or replace the specified procedure.

What comes in a KSport brake kit?

The exact listing and selected options define the contents. Check the vehicle, axle, calipers, rotors and all other included components; an individual service-part listing is not a complete kit.

How much does a big brake kit cost?

Choose your application, axle and options for the current catalog price. Include installation, fluid and any application-required work in the project budget, then consider compatible pad and rotor replacement costs.

Will my OEM ABS and master cylinder work with a KSport big brake kit?

KSport says its big brake kits are designed to work with OEM master cylinders and that OEM ABS systems continue to function. Confirm the exact vehicle application and kit before ordering.

Should I choose cross-drilled or slotted rotors?

KSport recommends cross-drilled rotors for daily-driven vehicles and slotted rotors for vehicles that see more track use. KSport says both types provide increased bite over stock and continually clean the pad surface; check which rotor type is offered for your exact kit.

Brake service resource

Match pads and rotors to the exact kit

Replacement brake parts depend on the KSport kit and part number already on the vehicle, not the vehicle name alone.

Keep your setup working

Replacements & accessories.

Replacement rotors, pads and calipers belong to the kit you already have. Lines and mounting hardware must match its specification.

Brake calipers

Replacement 2-, 4-, and 8-piston calipers for KSport big brake kits. Match the caliper to the rotor size and axle of your existing kit.

From $1,034.55Availability varies by application

Brake hardware

Caliper brackets, center bells and mounting hardware for the exact system.

From $143.69Availability varies by application

Brake lines

DOT-compliant stainless-steel braided brake lines, sold as a pair, for KSport big brake kits.

From $286.23Availability varies by application

Brake pads

Replacement street (SC) and race (RC) pads for KSport big brake kits. Choose the pad that matches your caliper piston count and rotor size.

From $206.91Availability varies by application

Brake rotors

Match rotor size, style and axle to your existing KSport kit.

From $919.60Availability varies by application

A real person. The right setup.

Talk through fitment, driving goals or replacement parts with KSport.

Talk to a tech

Big Brake Kits

Start with your car.

Find your system

Choose the right brake system.

Fit the car.Clear the wheel.

All big brake kits applications

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Drilled Rotors - Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Slotted Rotors - Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 16.6 in. Drilled Rotors - Supercomp

09-13 Mercedes Benz E Class - Front 8 Piston Big Brake Kit w/ 16.6 in. Slotted Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13 in. Drilled Rotors - Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13 in. Slotted Rotors - Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13.8 in. Drilled Rotors - Slimline

03-12 Mercedes Benz SL Class - Front 3 Piston Big Brake Kit w/ 13.8 in. Slotted Rotors - Slimline

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Drilled Rotors - Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Slotted Rotors - Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Drilled Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 13 in. Slotted Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Drilled Rotors - Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Slotted Rotors - Procomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Drilled Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 14 in. Slotted Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15 in. Drilled Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15 in. Slotted Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Drilled Rotors - Supercomp

03-12 Mercedes Benz SL Class - Front 8 Piston Big Brake Kit w/ 15.7 in. Slotted Rotors - Supercomp

Big brake kits: choose the system, not just the rotor size

What does a big brake kit change?

When does a big brake kit make sense?

Rotor diameter, thickness and construction

Will the kit fit behind your wheels?

Pads: street comfort and track temperature

Street and track are different jobs

Comparing KSport kit families

Installation, bedding and ongoing care

Budget for the complete change

Brake kit questions answered

Match pads and rotors to the exact kit

Replacements & accessories.

Brake calipers

Brake hardware

Brake lines

Brake pads

Brake rotors

A real person. The right setup.

Big Brake Kits

Start with your car.

Find your system

Choose the right brake system.

Fit the car.Clear the wheel.

Big brake kits: choose the system, not just the rotor size

What does a big brake kit change?

When does a big brake kit make sense?

Rotor diameter, thickness and construction

Will the kit fit behind your wheels?

Pads: street comfort and track temperature

Street and track are different jobs

Comparing KSport kit families

Installation, bedding and ongoing care

Budget for the complete change

Brake kit questions answered

Match pads and rotors to the exact kit

Replacements & accessories.

Brake calipers

Brake hardware

Brake lines

Brake pads

Brake rotors

A real person. The right setup.

Fit the car.
Clear the wheel.

Fit the car.
Clear the wheel.