2019-2026+ Mercedes-Benz G-Class / AMG (W463A/W465) CCB Big Brake Kit | Akebono 10N 10-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
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2019-2026+ Mercedes-Benz G500 / G550 / G63 (W463A/W465) CCB Big Brake Kit — Genuine Akebono OEM Porsche 10-Piston (10N) Caliper Front + Genuine Brembo OEM Porsche 19Z 4-Piston Caliper Rear Setup
The W463A/W465 G-Class is heavy, upright, and hard on brakes when driven fast, towed, or repeatedly slowed from highway speed; iron rotors add dust and heat while large wheels expose the brake package. This StopFlex kit uses a 420mm front carbon-ceramic rotor with a Genuine Akebono OEM Porsche 10-Piston (10N) Caliper and a 410mm rear carbon-ceramic rotor with a Genuine Brembo OEM Porsche 19Z 4-Piston Caliper to add heat capacity, reduce brake dust, and cut rotating mass. Each kit is engineered to the buyer’s exact G500, G550, or G63 trim, not treated as a universal W463A/W465 bolt-on.
- 420mm is the largest rotor in this package, so the kit requires 21-inch or larger wheels; spoke profile and offset must still be checked before production.
- The front axle uses a Genuine Akebono OEM Porsche 10-Piston (10N) Caliper over a 420mm carbon-ceramic rotor for a heavy W463A/W465 G-Class that needs thermal reserve and consistent pedal response.
- G500/G550 and G63 trims can differ in brake, hub, upright, and wheel-clearance details, so StopFlex builds the brackets, hats, and line package for the confirmed trim and wheel setup.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Mercedes-Benz G500 / G550 / G63 (W463A/W465) |
| Model years | 2019-2026+ |
| Front setup | Genuine Akebono OEM Porsche 10-Piston (10N) Caliper / 420mm |
| Rear setup | Genuine Brembo OEM Porsche 19Z 4-Piston Caliper / 410mm |
| Page type | Complete CCB kit upgrade |
| Minimum wheel size | 21" (for the 420 mm front rotor) |
Every StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.
This setup uses a 420 mm front rotor, so the minimum wheel size is 21". Wheels under 21" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
| Wheel Size (Standard) | Disc Range |
|---|---|
| 15" | 260 mm – 285 mm |
| 16" | 285 mm – 300 mm |
| 17" | 300 mm – 330 mm |
| 18" | 330 mm – 355 mm |
| 19" | 355 mm – 380 mm |
| 20" | 380 mm – 400 mm |
| 21" | 400 mm – 420 mm |
| 22" | 420 mm – 440 mm |
Caliper Overview — Front & Rear Balance
Front Caliper (Primary Upgrade)
The front upgrade is the Genuine Akebono OEM Porsche 10-Piston (10N) Caliper paired with a 420mm carbon-ceramic rotor. Its 10-piston layout spreads clamping load across a larger pad area for stable pedal feel and controlled pressure distribution on a high-mass G-Class. The caliper is an OEM-derived Akebono performance unit, giving the kit a proven production-caliper foundation rather than an unbranded aftermarket casting.
Rear Caliper (Balance)
The rear axle uses a Genuine Brembo OEM Porsche 19Z 4-Piston Caliper with a 410mm carbon-ceramic rotor to keep rear torque contribution matched to the larger front system. On EPB-equipped W463A/W465 vehicles, rear packaging is engineered around parking-brake function instead of deleting the factory electronic parking brake strategy.
Front & rear, engineered together: The 420mm front and 410mm rear carbon-ceramic package is engineered as a system so the G-Class does not receive a front-only torque increase that leaves rear brake contribution, pedal travel, or stability control behavior out of balance. Brackets, hats, pads, and lines are specified together for the confirmed trim and wheel package.
Make It Yours — Color & Logo Customization
Every StopFlex kit-upgrade order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the brake package matches your exact build instead of a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why StopFlex CCB
Lower Unsprung Mass
StopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.
High-Temperature Stability
The carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.
Rust-Free Rotor Surface
Carbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.
Long Street-Service Potential
In normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.
Low Visible Dust
When paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.
Premium Ceramic-Glaze Appearance
StopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.
Street-Usable Cold Bite
Street Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.
Continuous Fiber Reinforcement
Long-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak into pads, fluid, seals, calipers, wheels, and nearby components. For long track sessions, mountain descents, or sustained aggressive driving, brake cooling and high-temperature fluid are still recommended.
Street / Track-Day / Motorsport Rotor Options
Street Spec
Ceramic coating, cross-drilled face, and large cooling channels.
Best for daily driving and premium street builds that need clean cold bite, low dust, corrosion-free appearance, and long service life.
Track-Day Spec
Ceramic coating, blank face, and honeycomb cooling channels.
Best for fast-road and track-day use where repeated braking stability matters more than maximum visual drilling style.
Motorsport Spec
Uncoated blank face with honeycomb cooling channels.
Best for race-focused builds that run competition pads, high-temperature fluid, cooling strategy, and a proper warm-up window. Not the default street choice.
Package Scope
| Item | Details |
|---|---|
| Front calipers | Genuine Akebono OEM Porsche 10-Piston (10N) Caliper |
| Front CCB rotors | 420mm |
| Rear calipers | Genuine Brembo OEM Porsche 19Z 4-Piston Caliper |
| Rear CCB rotors | 410mm |
| CCB brake pads | Matched for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| Color customization | Custom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order. |
| Order scope | Default listing is full-car set when front and rear are specified. Front-only or rear-only orders can be arranged after confirmation. |
EPB & Rear Caliper Options
This vehicle leaves the factory with an electronic parking brake (EPB) built into the rear brake, so the rear of the kit is built to keep that EPB working. There are two rear paths. The first is a dual-caliper rear: a main performance caliper handles braking while a dedicated EPB actuator caliper is retained alongside it, so the electronic parking brake, auto-hold, and hill-start assist all keep working; on this path the rear performance caliper can be the TTSPORT EP4 / EP4S 4-piston caliper. The second is an EPB-integrated caliper, a single rear caliper with the electromechanical parking-brake motor built in for a cleaner install with fewer parts behind the wheel; on this path the rear is the TTSPORT EP4 / EP4S 4-piston caliper with integrated EPB. Which path fits best depends on your exact trim and EPB configuration, your budget, your appearance preference, and your wheel size and spoke clearance. Confirm your car's rear-brake configuration with StopFlex before ordering so the correct EPB-compatible rear option is built for your kit.
| Rear option | What it is | Rear caliper | Best when |
|---|---|---|---|
| Dual caliper (EPB retained) | Performance caliper plus a dedicated EPB actuator caliper, both fitted on the rear, so the factory electronic parking brake keeps working. | TTSPORT EP4 / EP4S 4-Piston Caliper | You want guaranteed factory EPB, auto-hold, and hill-start behavior preserved. |
| EPB-integrated caliper | A single rear caliper with the electromechanical parking-brake motor built in, for a cleaner install with fewer parts behind the wheel. | TTSPORT EP4 / EP4S 4-Piston Caliper with integrated EPB | You want a cleaner single-caliper rear with full EPB function. |
FAQ
Will this kit fit my exact G500, G550, or G63?
Fitment is built for your confirmed model year and trim. StopFlex does not assume every W463A/W465 G-Class shares the same front knuckle, hub geometry, rotor-hat offset, or wheel clearance, so brackets and hats are specified for your exact G500, G550, or G63.
What wheel size is required for the 420mm front rotor?
The 420mm front rotor requires 21-inch or larger wheels. Barrel clearance, spoke shape, offset, and spacer use still need to be verified because a 21-inch wheel can clear diameter but fail caliper spoke clearance.
Will the electronic parking brake still work?
Yes, the W463A/W465 G-Class uses an electric parking brake, and the rear package is engineered to retain factory parking-brake function where applicable. StopFlex confirms the rear configuration before building the 410mm rear carbon-ceramic setup.
Why move from factory iron brakes to carbon-ceramic on a G-Class?
Carbon-ceramic rotors reduce brake dust, handle repeated heat cycles better than iron in aggressive use, and reduce rotating mass at the hub. On a heavy G500, G550, or G63 with large open wheels, those gains matter for cleanliness, heat control, and steering response.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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