ENDLESS RACINGMONO6RALLY REAR INCH UP SYSTEM INCH UP KIT FRONT REAR SET FOR AUDI RS3 (8V) SPORTBACK FAZOXRS38VSB

 

ENDLESS RACINGMONO6RALLY REAR INCH UP SYSTEM INCH UP KIT FRONT REAR SET FOR AUDI RS3 (8V) SPORTBACK FAZOXRS38VSB

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.

ENDLESS RACINGMONO6RALLY REAR INCH UP SYSTEM INCH UP KIT FRONT REAR SET FOR AUDI RS3 (8V) SPORTBACK FAZOXRS38VSB

Why Honda VTEC is special VS others?

 

Honda VTEC (Variable Valve Timing and Lift Electronic Control) is a mechanical + hydraulic system that lets one engine behave like two:

• Efficient & smooth at low RPM
• Powerful & aggressive at high RPM

Below is a clear, technical explanation—no fluff.

1️⃣ The Core Idea (Simple First)

Normally, an engine has one camshaft profile:

• Mild cam → good fuel economy, low-end torque
• Aggressive cam → high RPM power, rough idle

👉 VTEC uses multiple cam profiles and switches between them depending on engine speed and load.

2️⃣ Key Components

🔹 Camshaft (3-lobe design per valve pair)

For each intake (and often exhaust) valve set:

• 2 low-lift cams (outer lobes)
• 1 high-lift cam (center lobe – the “VTEC cam”)

🔹 Rocker Arms

• One rocker per cam lobe
• Normally separated at low RPM

🔹 VTEC Solenoid

• Controlled by the ECU
• Opens oil passage when VTEC activates

🔹 Locking Pins (hydraulic)

• Oil pressure pushes pins to lock rocker arms together

3️⃣ How VTEC Works (Step by Step)

🟢 Low RPM (VTEC OFF)

• Oil pressure NOT sent to locking pins
• Rockers follow small cam lobes
• Result:
  
• Smooth idle
• Good fuel economy
• Strong low-end drivability

📉 Low lift + short duration

🔴 High RPM (VTEC ON)

Triggered when:

• RPM threshold reached (e.g. 5,400–6,000 rpm)
• Throttle position
• Oil pressure & engine temp OK

What happens:

1. ECU activates VTEC solenoid
2. Oil pressure pushes locking pins
3. Rockers lock together
4. Valves now follow the big center cam

📈 High lift + long duration

Result:

• More air enters the engine
• Higher RPM breathing
• Sudden surge of power (“VTEC kick”)

4️⃣ Why VTEC Makes More Power

At high RPM:

• Engine needs more air, faster
• Big cam opens valves:
  
• Higher
• Longer
• Improves:
  
• Volumetric efficiency
• Horsepower at high RPM

This is why Honda NA engines rev so high.

5️⃣ Different Types of VTEC (Important)

🔹 DOHC VTEC (Performance)

• Found in B-series, K20A Type R, F20C
• VTEC on intake & exhaust
• Big power jump

🔹 SOHC VTEC

• Usually VTEC only on intake
• Less aggressive
• Focused on efficiency + mild power

🔹 VTEC-E (Economy)

• One intake valve closes early
• Ultra-lean burn
• Minimal performance gain

6️⃣ i-VTEC (Modern Evolution)

Used in K-series, L-series engines.

Combines:

• Traditional VTEC (lift/duration)
• VTC (Variable Timing Control)

🧠 Cam timing is continuously adjusted, not just ON/OFF.

Benefits:

• Better torque everywhere
• Lower emissions
• Smoother power curve

7️⃣ Why Honda VTEC Is Special vs Others

System	What Changes	Feel
Honda VTEC	Lift + duration	Explosive top-end
BMW VANOS	Timing only	Smooth torque
Toyota VVT-i	Timing only	Linear power
Audi Valvelift	Lift (limited)	Less dramatic

Honda prioritized high-RPM NA performance, not just drivability.

8️⃣ Real-World Example (B18C Type R)

• VTEC engages ~5,800 rpm
• Redline ~8,400 rpm
• Small cams = street-friendly
• Big cam = race engine behavior

That’s why old Hondas feel tame… then insane. It will bring you there, a real VTEC kick to excite.

Power Dynamics: BMW M3 VS Audi RS5 VS Alfa Romeo Giulia Quadrifoglio

 

When talking about exhilarating power, firm dominance, agile and elegance, possibly three (3) brands struck in minds. The brands that possessed a refined definition for track spirited but street humming excitement.

Below is a clean, engineering-focused comparison of the ENGINES and powertrain philosophy behind these three (3) selected brands:

• BMW M3 (G80)
• Audi RS5 (B9)
• Alfa Romeo Giulia Quadrifoglio

The judgement will be based on robustness, agility, power delivery, track ability, and street-spirited character from various sources but not for marketing.

🔧 ENGINE TECHNICALITIES & TECHNOLOGY

🟦 BMW M3 (G80) — S58

3.0L Inline-6, Twin-Turbo.

Key tech:

• Closed-deck aluminum block (very strong)
• Forged crankshaft
• Twin mono-scroll turbochargers
• Direct injection + Valvetronic
• High thermal tolerance (track-designed cooling)
• Designed from day one for tuning & abuse

Output:

• ~473 hp (base)
• ~503 hp (Competition)
• Torque: ~650 Nm

Character:

• Linear power build
• Massive mid-range torque
• Very predictable at the limit

Engineering philosophy:

Motorsport- derived, overbuilt, modular, boost friendly

🟥 Audi RS5 — 2.9 TFSI

2.9L V6 Twin-Turbo (Hot-V)

Key tech:

• Hot-V turbo layout (turbos inside V)
• Compact packaging
• Direct injection
• Emissions-optimized
• Quattro AWD bias

Output:

• ~444 hp
• Torque: ~600 Nm

Character:

• Very fast off the line
• Smooth, refined delivery
• Less dramatic at high RPM

Engineering philosophy:

Efficiency, refinement, daily usability, AWD traction

🟩 Alfa Romeo Giulia Quadrifoglio — 2.9L V6

Ferrari-derived Twin-Turbo V6

Key tech:

• Aluminum block & heads
• Ferrari-influenced combustion design
• Direct injection
• Lightweight internals
• Very aggressive throttle mapping

Output:

• ~505 hp
• Torque: ~600 Nm

Character:

• Explosive response
• High-revving, emotional
• Extremely sharp throttle

Engineering philosophy:

Lightweight, emotion, driver-first performance

⚙️ ROBUSTNESS & LONG-TERM DURABILITY

Engine	Robustness
BMW S58	-Best overall overbuilt, proven, tuning monster
Audi 2.9 TFSI	-Good but heat-sensitive (Hot-V complexity)
Alfa 2.9 V6	-Amazing but more maintenance-sensitive

👉 Winner: BMW M3 (S58)

Best for repeated track use, high mileage, and tuning.

🏎️ AGILITY & WEIGHT FEEL (ENGINE CONTRIBUTION)

Engine	Agility Feel
Alfa Quadrifoglio	-Lightest, most responsive
BMW M3	-Balanced, slightly heavier
Audi RS5	-Heavier nose, AWD inertia

👉 Winner: Alfa Romeo Quadrifoglio

🔥 POWER DELIVERY & THRILL

Engine	Thrill Factor
Alfa Quadrifoglio	-Emotional, Ferrari-like
BMW M3	-Brutal, controlled
Audi RS5	-Refined, muted

👉 Winner: Alfa Romeo

🏁 TRACK PERFORMANCE (ENGINE + COOLING)

Engine	Track Consistency
BMW M3	-Most consistent lap after lap
Alfa Quadrifoglio	-Fast but heat-sensitive
Audi RS5	-More GT than track weapon

👉 Winner: BMW M3

🛣️ STREET-SPIRITED DRIVING

Engine	Street Fun
Alfa Quadrifoglio	-Alive at any speed
Audi RS5	-Easy, fast, comfortable
BMW M3	-More serious, focused

👉 Winner: Alfa Romeo

🧠 OVERALL ENGINE PHILOSOPHY VERDICT

🥇 BEST ALL-AROUND ENGINE: BMW M3 (S58)

✔ Most robust

✔ Best track endurance

✔ Best tuning potential

✔ Motorsport-grade durability

🥈 MOST EXCITING & AGILE: Alfa Romeo Quadrifoglio

✔ Lightest feel

✔ Sharpest throttle

✔ Most emotional

❌ Less forgiving long-term

🥉 BEST DAILY PERFORMANCE: Audi RS5

✔ Smooth

✔ AWD traction

✔ Reliable luxury performance

❌ Least raw and engaging

🎯 FINAL ONE-LINE SUMMARY

• BMW M3 → Engineering perfection, brutal and reliable
• Alfa Quadrifoglio → Pure emotion, agility, and soul
• Audi RS5 → Fast, polished, and composed