AUDI Q8 RS CERAMIC BRAKE SYSTEM 4M0 CALERS DISCS PADS NEW
The Audi RSQ8 (4M8) Carbon Ceramic Brake system is a high-performance 10-piston setup that shares its core engineering with the Lamborghini Urus. While many parts carry a 4M8 prefix (specific to the RSQ8), several sensors and mounting components utilize the 4M0 prefix found across the Q7/Q8 range.
New RSQ8 Ceramic System Components
1. Front Axle (10-Piston Setup)
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Calipers (Akebono Monoblock):
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Red:
4M8.615.107.C(Left) /4M8.615.108.C(Right) -
Blue:
4M8.615.107.G/4M8.615.108.G -
Grey:
4M8.615.107.B/4M8.615.108.B
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Discs ($440\text{mm} \times 40\text{mm}$):
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Left:
4M8.615.301.C -
Right:
4M8.615.302.C
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Pads (Ceramic Specific):
4K0.698.151.AE(or latest revisionBM/AL).
2. Rear Axle (Single-Piston with EPB)
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Discs ($370\text{mm} \times 30\text{mm}$):
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Left:
4M0.615.601.AD -
Right:
4M0.615.602.J
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Pads (Ceramic Specific):
4M8.698.451.C
Technical Guide for Inventory & Sales
| Feature | Specification |
| Material | Carbon Fiber Reinforced Silicon Carbide (Ceramic) |
| Unsprung Mass | Reduces weight by approximately 34kg compared to steel. |
| Wheel Fitment | 22-inch wheels are the standard minimum to clear the front calipers. |
| Brake Pads | Must use “CCB” specific compounds; steel-brake pads will ruin ceramic rotors. |
| Cross-Platform | Front rotors and calipers are a direct match for the Lamborghini Urus. |
Inventory Distinction for Buy Mustang parts Ltd
It is important to note the difference between the 4M0 and 4M8 prefixes:
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4M0Components: Often shared hardware like wear sensors (4M0.615.121.B), dust shields, and some rear hub components. -
4M8Components: These are the RS-specific high-performance parts (Rotors and Calipers).
Selling Tip: If you are listing “New” sets, always include the Wear Sensors. They are inexpensive but essential for a complete “bolt-on” sale, and high-end customers prefer purchasing a complete kit that doesn’t require extra trips to the dealership.
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