SC-Project S1 Slip-On Silencer BMW S1000RR K67 (2019-2020) Titanium – B33A-41T

Developed directly from SC-Project's involvement in the Superbike World Championship, the S1 slip-on silencer delivers a genuinely race-derived exhaust note and measurable power gains to your BMW S1000RR K67 — all while retaining full Euro 4 road approval. The tapered titanium canister sheds a full kilogram over the stock unit, transforming the feel of the bike from the first ride and rewarding you with that unmistakable SC-Project soundtrack every time you open the throttle.

Key Features

• Tapered titanium body construction reduces overall exhaust weight by 1 kg compared to the OEM unit (stock 2.3 kg vs SC-Project 1.3 kg), noticeably lightening the rear end.
• Carbon fibre end cap offers outstanding heat resistance and a premium race aesthetic that complements the S1000RR's aggressive styling.
• T.I.G.-welded mounting brackets ensure rigid, rattle-free fitment with a purposeful racing appearance.
• CNC-machined titanium coupling sleeves guarantee precise, repeatable alignment on the original header connection — no shimming or adaptation required.
• Measured performance gains of +1.1 hp at 11,500 rpm and +0.8 Nm at 10,250 rpm over the standard exhaust.
• EC and TÜV approved for Euro 4 road use — full homologation card included, so the S1000RR remains street-legal straight out of the box.

Construction and Performance

SC-Project's S1 series was born on the WorldSBK pit lane, and every element of this silencer reflects that heritage. The conical titanium canister is hand-TIG-welded by skilled craftspeople in SC-Project's Italian facility, producing a finish that is as visually striking as it is structurally sound. Titanium's natural resistance to heat and corrosion means the canister ages gracefully even under sustained high-speed use, maintaining its colour and integrity through track days and commutes alike.

The carbon fibre heat shield wrapped around the canister does more than just look the part — it acts as an additional thermal barrier, protecting surrounding bodywork and keeping surface temperatures in check during spirited riding. Combined with the titanium link pipe, the entire assembly is engineered to minimise heat soak into the airbox and frame while maximising gas-flow efficiency through the system.

Sound and Character

The S1 produces a deep, layered exhaust note with a clear racing character at higher revs. On a bike as free-revving as the S1000RR, the difference between the standard silencer and the S1 is immediately apparent — the mid-range gains body and the top-end sharpens into something genuinely exciting. Critically, the Euro 4 homologation means this character is delivered within legal noise limits, so you can enjoy the sound on public roads without concern.

Fitment and Compatibility

This silencer fits the BMW S1000RR K67 manufactured in 2019 and 2020 (Euro 4 models). Installation is a direct plug-and-play replacement for the OEM slip-on section — no ECU remapping or additional adaptation is required. The complete hardware kit, including springs and bolts, is supplied in the box alongside the SC-Project homologation card.

Specifications

• Type: Slip-on silencer
• Body material: Titanium
• End cap material: Carbon fibre
• Link pipe material: Titanium
• Mounting: T.I.G.-welded bracket
• Approval: EC and TÜV — Euro 4 road legal
• Weight saving: -1 kg (OEM 2.3 kg / SC-Project 1.3 kg)
• Power gain: +1.1 hp at 11,500 rpm
• Torque gain: +0.8 Nm at 10,250 rpm
• Part number: B33A-41T
• Fitment: BMW S1000RR K67 (2019-2020), Euro 4