SC-Project SC1-S Full Exhaust System Race — Yamaha YZF-R7 (2021-2025) Y36A-CDE124

The SC-Project RACE SC1-S is a complete 2-1 exhaust system purpose-built for the Yamaha YZF-R7, delivering a measurable boost in power and a weight saving that transforms how the bike feels on both the road and the circuit. Built entirely from AISI 304 stainless steel with your choice of carbon or titanium silencer, it is the most straightforward performance upgrade you can bolt to your R7.

Key Features

• +2.5 hp at 10,000 rpm and +2.6 Nm torque at 4,750 rpm — gains felt from the moment you open the throttle
• 3.8 kg weight reduction (SC system: 3.9 kg vs. stock: 7.7 kg) for noticeably sharper handling and improved agility
• Full 2-1 system constructed from AISI 304 stainless steel for long-term heat resistance and structural integrity
• CNC-machined titanium bushings for precise fit and optimised exhaust flow
• T.I.G.-welded joints throughout — the same construction method used in professional racing
• SC1-S silencer available in carbon or titanium, each finished with a carbon fibre end cap
• Carbon fibre heat shield included as standard for both protection and a purposeful race aesthetic

Performance You Can Measure

SC-Project's engineers developed this system specifically around the YZF-R7's CP2 parallel-twin, optimising header diameter, bend radius and collector geometry to liberate power that the stock system suppresses. Removing the catalytic converter reduces back-pressure and heat build-up simultaneously, which is where the real-world gains are felt most clearly in mid-range response and upper-rev pull.

The sound level has been measured at 100 dB at 4,375 rpm without a dB killer — a deep, aggressive note that is unmistakably race-bred without the thin, hollow character of lesser systems.

Construction and Materials

Every weld on this system is T.I.G.-finished to aerospace standards, and the CNC-machined titanium bushings ensure the silencer connection is rattle-free under sustained track use. Whether you opt for the carbon variant (Y36A-CDE124C) or the titanium variant (Y36A-CDE124T), the silencer body is paired with a carbon fibre end cap that ties the look together cleanly. The included carbon fibre heat shield sits flush against the collector, protecting rider and passenger from radiated heat while reinforcing the race-ready appearance.

Everyday Usability and Value

This system ships complete with every bracket, spring and fastener required for installation, so there is no secondary hardware spend. The single-seat exhaust bracket is designed to align perfectly with the R7's subframe without modification. SC-Project includes a 24-month official warranty and a homologation card — the latter for documentation purposes only, as this system is not road-legal and is intended for closed-circuit and racing use exclusively. For trackday riders who want a single upgrade that addresses power, weight and sound in one purchase, the SC1-S full system represents straightforward, honest value.

Fitment and Compatibility

This exhaust system fits the following motorcycle:

• Yamaha YZF-R7 — model years 2021, 2022, 2023, 2024 and 2025

Important Notice

This product is for racing use only. It is not approved for road use and must not be used on public roads. Please ensure compliance with all applicable regulations at your circuit or event.

Specifications