Akebono 10‑Piston Front Ceramic Brake Calipers for 420mm Rotors – 4J3615123E / 4J3615124E for Audi Cars

Name: Akebono 10‑Piston Front Ceramic Brake Calipers for 420mm Rotors – 4J3615123E / 4J3615124E | for Audi Cars
Brand: ForzaCCB.com
SKU: 8226057126027
Price: 1950.00 USD
Availability: InStock

Only 3 left

Price per pair

$1 950

~~$2 850~~ Sale $1 950

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Transform your braking performance with these genuine OEM Audi e‑tron GT 10‑piston Akebono red ceramic brake calipers (part numbers 4J3615123E / 4J3615124E), engineered specifically for 420×40 mm front discs. Built to the exact same specification as the Audi e‑tron GT and RS e‑tron GT, these ultra‑high‑performance calipers deliver incredible stopping power, exceptional heat resistance, and a lightweight design for maximum performance on both track and street.

OEM‑grade performance & fitment

Specifically engineered for 420 mm front ceramic brake discs (420×40 mm), providing a direct, plug‑and‑play upgrade path for compatible Audi and other VAG‑based platforms.
Factory‑matched piston sizes, sealing, and stroke ensure OEM‑level modulation and safety, combined with the aggressive bite and fade resistance of Akebono 10‑pot ceramic friction.

Broad VAG and performance‑platform compatibility

These calipers are originally listed for:

Audi e‑tron GT / RS e‑tron GT (F8) – factory front setup.
Audi RS6 C8, RS7 C8, and related VAG performance platforms when paired with the correct caliper adapters and 420 mm rotor backbone (commonly used in aftermarket “big brake” upgrade kits).

With the use of adapter kits and hub/rotor backbones, they can be adapted to a wide range of vehicles, including:

Many Audi performance models (RS/S‑line) already running 400–420 mm front rotors.
Select Porsche, Lamborghini, and other high‑performance chassis via universal or brand‑specific adapter systems (custom mounting).

Customization options

Color & logo customization available on request (e.g., caliper body color, model‑specific logos), at an additional cost – ideal for matching your build theme or brand identity.
Sold as a complete 10‑piston Akebono front caliper set (left + right), ready to pair with 420 mm ceramic or high‑performance steel rotors and matching pads for a fully integrated, high‑end braking package.

Perfect for track‑focused builds, street‑performance GTs, and show‑car projects where OEM heritage and maximum braking power must coexist.

CCB Rotor & Wheel Fitment Guide

Minimum wheel diameter guidance by rotor size. Always validate final fitment using a physical template and measured clearances.

Rotor Size (Diameter x Thickness)	Minimum Wheel Size	Technical Fitment Notes
310mm × 22mm	16-inch	Fits most 16-inch wheels. Installation on 15-inch wheels is possible only with specific low-profile callipers and is not generally recommended.
330mm × 28mm	17-inch	Standard entry-level size for performance brake upgrades. Fits comfortably within most 17-inch alloy wheels.
345mm - 356mm × 32mm	18-inch	Common mid-range size. Requires 18-inch wheels with standard barrel clearance.
380mm × 32/34mm	19-inch	The industry standard for Carbon Ceramic (CCB) and heavy-duty steel systems. Fits most 19-inch wheels; verify spoke clearance for wider callipers.
390mm × 36mm	19-inch (Tight Fit)	Fits 19-inch wheels with high-clearance barrels (flat inner bed). 20-inch wheels are recommended to ensure adequate air gap for cooling.
400mm - 405mm × 36/38mm	20-inch	Requires 20-inch wheels. Ensure the wheel barrel does not taper significantly near the mounting face.
410mm - 420mm × 38/40mm	21-inch	Standard fitment for 21-inch wheels. Can fit select 20-inch motorsport wheels with specialised flat barrel profiles (template verification required).
440mm × 40/42mm	21-inch (Minimum)	Extreme fitment. 21-inch is the absolute minimum requirement. 22-inch wheels are strongly advised for safe operating clearance and heat dissipation.

Essential Clearance Requirements

To ensure safety and prevent damage to components, please observe the following industry-standard tolerances when measuring your wheels:

Radial Clearance (Barrel): A minimum gap of 3mm is required between the top of the calliper and the inner wheel barrel to account for heat expansion and wheel deflection under load.
Axial Clearance (Spokes): Ensure a minimum of 3mm clearance between the face of the calliper and the rear of the wheel spokes.
Balance Weights: Ensure wheel balancing weights are positioned so they do not foul the brake calliper. We recommend placing weights outboard of the calliper zone for tighter fitments.

Important Fitment Disclaimer

The wheel sizes listed above represent minimum technical requirements based on standard barrel profiles. Due to significant variation in alloy wheel designs, particularly spoke curvature (X-factor) and inner barrel contours, meeting nominal diameter alone does not guarantee compatibility.

We strongly recommend verifying clearance instrumentally using printable fitment templates rather than relying only on visual estimates or stated wheel specifications. Please ensure at least 3mm clearance in all directions to account for thermal expansion and dynamic wheel deflection.