SC Project SC1-S Carbon 2-1 Stainless Steel full Exhaust System for Aprilia RS 457 2024-2025

SC Project SC1-S Carbon 2-1 Stainless Steel full Exhaust System for Aprilia RS 457 2024-2025

1. Product Overview & Purpose

The SC‑Project sc1-s RS 457 Carbon full exhaust is a bespoke 2‑1 stainless‑steel system built specifically for the Aprilia RS 457 model years 2024 and 2025. Incorporated into SC‑Project’s performance lineage from long-standing collaboration with Aprilia Racing, the goal is to deliver enhanced throttle response, reduced weight, distinctive aesthetics, and an aggressive tone—all while retaining plug‑and‑play simplicity.

Rated strictly for racing/track use only, this system replaces the OEM exhaust to reduce weight by ~1.9 kg and boost power by approximately +2.5 hp and +2.2 Nm at ~7200 rpm (measured without db‑killer).

2. Technical Data & Key Features

• Part Number: A30A‑AC124C (carbon option)

• Weight: ~4 kg total (vs OEM ~5.9 kg), net −1.9 kg

• Performance Gains: +2.5 hp and +2.2 Nm at ~7200 rpm

• Materials:

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

  • Muffler body and end cap: Carbon fibre (with carbon end cap)

  • Aluminium riveted logo plate for styling.

• Sound / Decibel Levels:

  • With the db‑killer installed: ~97 dB at 5500 rpm

  • Without it: ~100 dB at 5500 rpm.

• Accessories: Removable db‑killer, lambda probe support, racing-grade bracket mount

• Additional Included Component: ECR (Electronic Catalytic Remover) module plug‑and‑play via OBD.

3. Installation & Setup

Installing the SC1‑S Carbon is straightforward. The kit is plug‑and‑play, reversible, and doesn’t require permanent wiring or ECU reflashing. SC‑Project strongly recommends ECU remapping (e.g. via UpMap or Gabro) after installation to optimize fueling and throttle response, though ECU flashing isn’t strictly mandatory.

The ECR module, included in the package, connects to the RS 457’s OBD socket to simulate the catalytic converter signal and prevent ECU fault codes resulting from cat deletion. Installation is automatic and reversible.

4. Performance & Weight Benefits

• Reduced mass: Shedding nearly 2 kg off the stock system significantly improves agility, handling, and center of gravity—especially beneficial for track use.

• Power boost: SC‑Project’s dyno-reported +2.5 hp and +2.2 Nm are modest but noticeable improvements in mid‑range response at higher revs.

• Track optimization: The system is built with durability (stainless steel headers) and performance in mind—ideal for spirited riding.

5. Sound & Community Feedback

In the Aprilia RS 457 owner community, sound is a hot topic. The SC1‑S Carbon is frequently praised for its muscular, aggressive tone with ample bass and pop—but it also draws criticism for being very loud.

As one Reddit user comments:

“Having heard a number of SC Project exhausts up close – I’ll just say 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 noted:

“It is so much louder than the stock exhaust” and appreciated the pops and crackles.

Practical advice from riders includes the use of high-grade earplugs, even training sets, due to the proximity of exhaust exit to helmet/ears.

6. Build Quality & Aesthetics

SC‑Project’s craftsmanship is widely regarded as high quality:

• TIG-welded AISI 304 stainless headers and carbon fibre end cap deliver both strength and premium finishes.

• A riveted aluminium plate with brand logo emphasizes refined Italian design.

• However, users have reported baffle fit issues in general SC products (not necessarily RS457‑specific), advising care with db‑killer installation and possible sealant to prevent rattles over time.

7. Package Contents & Warranty

Included in the kit:

• SC1‑S Carbon muffler

• Stainless steel headers & link-pipe

• Mounting springs, screws, & bracket

• SC‑Project stickers

• 24‑month SC‑Project warranty is provided by the manufacturer.

The ECR unit may be listed as a related or included product depending on vendor, and its inclusion is strongly recommended to avoid ECU errors.

8. Legal & Usage Considerations

• Not road-legal: This system does not meet European emission or sound regulations, and is explicitly marketed as “for racing use only”

• Sound limits: Even with the db‑killer installed, the noise may exceed limits in many jurisdictions—check local track regulations and noise thresholds.

• Warranty risks: Installation may void or limit OEM Aprilia warranty coverage.

• Installation reversibility: Fully reversible—simply restore the stock exhaust and remove the ECR module to restore OEM compliance.

9. Pros & Cons Summary

Advantages:

• Plug‑and‑play installation with no permanent mods

• ~30% weight savings improves handling

• Measurable performance gains (~2.5 hp / 2.2 Nm)

• Premium materials/software, true racing pedigree

• Aggressive, sporty exhaust note

• ECR included to prevent ECU issues

Limitations:

• Extremely loud—can be excessive even with the db‑killer installed

• Legality restricted to track use only

• ECU remapping recommended for best performance

• Potential baffle fitment issues with looser tolerances

• May impact OEM warranty status