SC Project S1 Titanium Exhaust for BMW S 1000 RR 2017-2018

SC Project S1 Titanium Exhaust for BMW S 1000 RR 2017-2018

1. Overview & Brand Heritage

The S1 silencer is handcrafted in Italy by SC‑Project, a manufacturer rooted in MotoGP and World Superbike technologies, offering race‑level materials and finishes in consumer exhausts. Their systems are built right alongside MotoGP‑spec parts, translating track experience into street use

2. Design, Materials & Aesthetics

• The body is ultra‑light titanium, shaped into an elegant conical profile.

• The end cap is matte carbon fiber, providing a striking contrast and premium finish

• All brackets and fittings are TIG welded, with CNC‑machined titanium bushings and a laser‑etched logo for meticulous quality control

• A full titanium link pipe is included, also TIG‑welded for consistent flow and durability

The resulting finish is both refined and aggressive, projecting a purposeful, ready‑to‑race visual.

3. Performance Gains & Weight Reduction

• Weight savings of approximately 3.55 kg, dropping from ~4.45 kg (stock) to ~0.9 kg with the S1 system Power increase: around 4.9 hp at 10,700 rpm.

• Torque uplift: roughly 5.8 Nm at 7,600 rpm
  These gains, while modest on paper, have a noticeable impact on throttle response and high‑rpm drive, especially useful on track or spirited riding.

4. Installation & ECU Tuning

• The upgrade is plug‑and‑play: no cut or major modifications needed; the kit includes specific springs, screws, homologation card, and even stickers

• ECU remapping is not mandatory, thanks to EURO4 homologation. However, for optimal fuel delivery and to avoid lean conditions, many users opt for a tune or a fuel controller if extensive header changes are made

Note: Some sellers mention no dB‑killer included; others suggest variations depending on homologation region. Always confirm if a silencer insert is included, especially if street legality and noise limit compliance matters

5. Sound & Rider Experience

• The sound is deep, rich, and racetrack‑inspired. It goes beyond sporty to aggressive, with a pronounced bark on throttle and crisp blips on downshifts.

• Many users report it as significantly louder than stock: even with a baffle, extended rides can be overwhelming without ear protection

• As one Reddit user observed:

  “The S1 is far more bolder, deeper and louder. Sounds like a complete race engine.”

• Another added:

  “It looks awesome and is incredibly loud… black‑flagged at noise‑conscious tracks.”

For riders in noise‑sensitive areas or intended for street use, wearing ear plugs is strongly advised ‌to protect hearing and minimize complaints from others.

6. Legal & Homologation

• This version is EURO 4‑approved and street‑legal in Europe for 2017–2018 models, including homologation documentation.dB‑killer may or may not be included. Some official descriptions state no baffle, so users should verify product specs when ordering, especially for compliance in regulated markets.

7. Comparison to Other SC‑Project Models

• The CR‑T line is louder and styled more overtly race‑replica; louder still, with mesh outlets—a favorite for track riders.

• The SC1‑R slip‑on is a more regulated, milder system with a removable dB‑killer, weighing just slightly more, and lower sound pressure while still offering performance—but tuned for Euro 5 bikes beyond 2019
  The S1 strikes a balance: more aggressive than SC1‑R, but less extreme than CR‑T. Ideal for riders wanting performance and show‑quality sound without going full track‑only.