SC project SC1-S titanium 2-1 stainless Steel full exhaust System for Aprilia RS 457 2024-2025

SC project SC1-S titanium 2-1 stainless Steel full exhaust System for Aprilia RS 457 2024-2025

1. Product Overview & Intent

The SC‑Project SC1‑S Titanium is a racing-grade 2‑1 full exhaust system designed specifically for the Aprilia RS 457 model years 2024 and 2025. The system combines a titanium muffler body with 304‑grade stainless steel headers and link pipe, offering significant weight savings, sound enhancement, and performance gains. The kit includes the ECR (Electronic Catalytic Remover) module, ensuring ECU compatibility after catalytic converter removal.

2. Technical Specs & Performance Gains

• Part Numbers:

  • Europe: A30A‑AC124T

  • Australia/New Zealand (Tuono 457 variant): A30B‑AC124T

  • Power: +2.5 hp at 7200 rpm

• Torque: +2.2 Nm at 7200 rpm

• Weight: Approx. 4 kg vs stock ~5.9 kg — a ~1.9 kg (≈30%) reduction

• Materials:

  • Headers and link pipe: SAE/AISI 304 stainless steel

  • Muffler body: High-grade titanium

  • End cap: Carbon fibre with riveted aluminium SC-Project logo plate

• Sound output: ~97 dB at 5500 rpm with db-killer; ~100 dB without.

3. Installation & ECU Compatibility

Installation is plug‑and‑play, fully reversible, and no wiring or mechanical modifications are required to fit the exhaust or the ECR module. The system uses stock mounting points and includes springs, screws, and a bracket.

The ECR unit, included with the kit, plugs into the OBD port and simulates catalytic readings to prevent engine error codes post-cat removal. It manages the vehicle’s electronics seamlessly and may be optional if a tuning map (e.g. Gabro or UpMap) is applied

4. Sound Character & Community Feedback

SC‑Project exhausts are known for their deep, aggressive, and very loud tone. The SC1‑S Titanium delivers a visceral experience unmatched by stock systems:

• In community forums, users note:

  “Having heard a number of SC Project exhausts up close … the tone is great… but it’s obnoxiously loud. Your biker buddies will tell you it’s awesome, but most other people hate you.”

  Another typical comment:

• “It is so much louder than the stock exhaust”

• Additional warnings:

  “If you aren’t already buy some ear plugs, you need them regardless. The SC also sounded great … but they are ridiculously loud.”

These remarks emphasize cruise discomfort for neighbors and hearing safety during prolonged use. Use of high-quality ear protection is highly recommended when riding with or around this exhaust.

5. Build Quality & Design Features

SC‑Project emphasizes craftsmanship and premium finishes:

• TIG-welded headers showcase precise workmanship on stainless piping.

• The titanium muffler body features micro shot‑peening surface treatment, laser‑engraved SC‑Project logo, and well‑machined exit shape.

• Carbon end cap and aluminium branding plate reinforce both performance styling and durability.

While high quality, a few forum discussions (mostly about other SC models) caution that fitting tolerances can be tight and occasional rattles may occur if the db‑killer isn’t seated properly.

6. Package Contents & Warranty

Included in the kit:

• SC1‑S titanium muffler

• 2‑1 stainless steel headers and link-pipe

• Springs, bracket, screws

• Lambda probe provision and removable db‑killer

• SC‑Project stickers

• 24‑month manufacturer warranty

• ECR module is included or recommended for proper ECU function after cat removal

7. Legal & Usage Considerations

• The exhaust is marketed strictly for racing or track use only and does not comply with European emissions or road-noise regulations

• Even with the db‑killer installed, actual sound levels likely exceed many road‑legal limits in urban environments.

• Installing this system may void or affect OEM Aprilia warranty coverage, particularly related to emissions or engine diagnostics.

• Installation is reversible—restoring OEM exhaust and removing the ECR module reinstates stock legality, though tuning changes may require reversion too.

8. Summary — Pros & Cons

Advantages:

• Substantial weight reduction (~30%), improving agility and handling

• Noticeable performance increase (~2.5 hp / 2.2 Nm at high rpm)

• Premium materials: titanium, carbon fiber, polished stainless headers

• Clean, racing-oriented aesthetics

• Plug‑and‑play installation with minimal mechanical effort

• Integrated ECR module for smooth ECU operation post-cat removal

Limitations:

• Extremely loud — may exceed comfort or legal thresholds even with db‑killer

• Street legality is compromised in emission‑controlled jurisdictions

• ECU tuning recommended for optimal performance, though not strictly required

• Potential impact on OEM warranties depending on region

• Fitment may be tight; correct installation of db‑killer critical to avoid rattles

9. Ideal Use Cases

• Track Enthusiasts: Riders who hit the circuit often will benefit from reduced weight, improved throttle response, and full race-tone.

• Audiophiles & Performance Lovers: If you’re after deep acoustic character and striking design, this exhaust delivers premium aesthetics and visceral sound.

• Not suited for: daily street riding in noise-sensitive areas, or where emissions compliance is mandatory for registration.

Glossary & Facts At a Glance