SC Project Exhaust S1 Titanium for S 1000 R 2021-2024

SC Project Exhaust S1 Titanium for S 1000 R 2021-2024

1. Fitment & Product Snapshot

The S1 Titanium with Carbon‑Fiber End Cap (part number B39A‑41T) is SC‑Project’s lightweight, Euro 5‑approved slip‑on for the BMW S 1000 R (2021–2024) / M 1000 R (2023+) range

This model is street-legal, complete with homologation card and a 24‑month official SC warranty. Installation is plug‑and‑play, with no ECU remap required. It mounts to OEM headers, frame brackets, and footpeg layout

2. Construction & Materials

• Body and link pipe are built entirely from aerospace-grade titanium, including TIG-welded brackets and CNC-machined inserts for precise fitting.

• End cap is made from carbon fibre with heat-resistant liner.

• SC lists the weight at ~1.3 kg, compared to 2.3 kg factory cannister, delivering around 1.0 kg weight saving

The conical S1 shape offers improved back pressure, optimized clearance at extreme lean, and clean race styling derived straight from SC’s WSBK experience

3. Performance Gains

According to SC, installation yields modest but tangible gains:

• +0.6 hp at ~9,400 rpm

• +0.7 Nm at ~9,400 rpm

Combined with the lighter system, throttle response sharpens and agility in corners and braking improves—especially in spirited riding.

4. Sound & Volume Profile

Character & Loudness

The S1 is tuned to deliver an aggressive and deep tone, with no removable dB-killer included. SC describes it as an uncompromising racing exhaust compliant with Euro 5—but built to make an impact.

Community Feedback

Reddit users confirm it’s very loud:

“Loud as fuck. One of the loudest they make. 123 dB for the 2021+ bikes. Won’t be much quieter on a 17 bike.”

Another noted:

“[SC headers plus S1] was too loud… Most tracks balked at it.”

While performance and sound shape up well, riders reported ear fatigue, frequent ringing, and being a focal point of law enforcement attention on track days or in noise-controlled zones

5. Kit Contents & Installation

Included in the kit:

• Titanium muffler with carbon end cap

• Titanium link pipe

• Mounting springs and screws

• Heat-shield sticker

• Homologation card and 24‑month warranty

Fitment is seamless with OEM headers. One Redditor confirmed it works on 2022 US models with one O₂ sensor—no modifications required—and stated installation took about an hour, with zero ECU issues or warning lights.

6. User Insights & Community Sentiment

• Sound: Universally described as intense—some loved the character, others regretted the earbuds needed.

• Fit: Effective on both Euro and US models, though Euro versions may use an extra O₂ sensor; US users reported no adverse effects.

• Comparison: Many riders switched to SC1‑R or Akrapovič for better usability—preferring slightly quieter sound or removable baffle control.

7. Comparison Table with Other SC Models

The S1 sits above SC1‑R in loudness and aggression, and just below CR‑T in raw volume. SC1‑R offers volume control through its removable baffle—absent in S1 but available for users needing moderation in sound levels.

8. Pros & Cons Summary

Pros

• Lightweight design (~1.3 kg) improves handling noticeably.

• Premium titanium and carbon fibre construction, race-inspired styling.

• Street-legal EU‑5 compliant kit with full warranty and paperwork.

• Bolt-on ease—no ECU remap or fit adjustments required.

• Distinctive sound signature that stands out in the exhaust market.

Cons

• Very loud, possibly too much for long tours, urban areas or tracks with noise limits.

• Fixed sound, no onboard baffle to temper volume.

• Minimal horsepower boost; most of its merit is sound and weight.

• Possible annoyance to neighbors or authorities.

• Risk of counterfeit units if not ordered through official channels.

• Some riders report difficulty removing embedded db-killer if aftermarket tampered

9. Who Should Consider S1 Titanium?

Best suited for:

• Riders prioritizing a bold sound and race-inspired aesthetic.

• Those using the bike for spirited rides or occasional track days.

• Riders who aren’t concerned about volume limits or legal scrutiny.

• Enthusiasts comfortable using ear protection and attracting attention.

• Buyers sourcing from official dealers to ensure authenticity and warranty.

Less suitable for:

• Daily commuters or those in noise-sensitive environments.

• Riders wanting volume control or moderation.

• Touring riders or Valley/City dwellers needing quiet ride comfort.

• Budget-conscious buyers who may prefer SC1‑R or other quieter options.

10. Final Thoughts

The SC‑Project S1 Titanium Slip-On for the BMW S 1000 R (2021–2024) is a premium, race-informed upgrade that beautifully balances weight reduction, quality craftsmanship, and aggressive exhaust tone. Backed by SC’s racing heritage, it’s engineered for riders who live for throttle response and aural drama.

However, it’s not a subtle piece. Its loud character and lack of noise moderation make it a niche choice suited to devoted performance riders. If you’re chasing raw emotion in sound and visual cues, the S1 delivers. If you’re more concerned with everyday usability or noise limitations, exploring the SC1‑R or high-quality alternatives like Akrapovič may better suit your needs.