Here’s what is known about ENDLESS Racing MONO6/MONO6 Rally inch-up brake kits generally — and how to interpret this part if you’re shopping or considering ordering it:
🔧 What an ENDLESS “Racing MONO6 Rally Inch-Up Kit” Is
ENDLESS is a high-end Japanese maker of performance brake systems and motorsport hardware. The “Racing MONO6 Rally” series refers to:
- Forged monoblock 6-piston caliper design, optimized for strength and heat resistance in competitive driving
- Upgraded larger brake rotors (“inch-up”) compared with stock Audi brakes for better heat capacity and leverage
- Designed to improve brake performance, fade resistance, and pedal feel on track or spirited street driving
“Inch-up” refers to fitting larger diameter rotors than stock for greater braking torque and stability under load.
🛞 Typical Contents of an ENDLESS racing inch-up kit
While not the exact RS3 kit SKU, similar Endless kits include:
- Front racing calipers (6-piston)
- Rear racing calipers (6-piston or Rally variant)
- Large diameter 2-piece rotors
- Brake pads (performance compound)
- Caliper mounting brackets and stainless brake lines
- Instruction sheet/manual (usually in Japanese)
Each kit is tailored to the vehicle’s hub spacing and wheel fitment, and often different for Audi S3 vs RS3 vs TT vs TTRS. Audi S3 (8V) kits are commonly seen; RS3-specific kits may exist through special order channels.
📦 Compatibility Notes
- ENDLESS does make Audi RS3 replacement discs — for RS3 8V fronts with 370×34 mm 2-piece rotors sold as performance discs — though not full brake kit under that exact name on official sources.
🧠Important Fitment Considerations
- Larger brake kits may require specific wheel clearances (often 18″+ wheels and offsets that clear 6-pot calipers).
- Some kits use adapter brackets for rear inch-up rotors rather than replacing rear calipers entirely.
- Always verify fitment with your wheel size and tire choice before ordering.
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