⟲ 360° — drag meThe facts.
| Brand | SC-Project |
|---|---|
| Model | STREET SC1-S |
| Part number | Y36A-C125 |
| Fitment | Yamaha YZF-R7 (2021-2025) |
| System type | Full exhaust system (2-1) |
| Header material | AISI 304 stainless steel |
| Silencer finish options | Carbon (Y36A-C125C) / Titanium (Y36A-C125T) |
| System weight | 5.7 kg |
| Weight saving vs. stock | -2 kg (stock: 7.7 kg) |
| Power gain | +1.6 hp at 10,000 rpm |
DescriptionThe whole story▼
The SC-Project STREET SC1-S is a complete, road-legal full exhaust system engineered specifically for the Yamaha YZF-R7 (2021-2025), delivering genuine performance gains, a 2 kg weight saving and a deep, sonorous exhaust note — all within EURO 5 compliance. Whether you commute during the week or push on trackdays at the weekend, this system gives you race-derived technology without compromise on legality or all-day rideability.
Key Features
- +1.6 hp at 10,000 rpm and +2.3 Nm torque at 4,750 rpm over the stock exhaust — sharper acceleration and stronger mid-range pull
- 2 kg weight reduction (SC-Project system: 5.7 kg vs. stock: 7.7 kg) for improved handling and chassis balance
- EURO 5 compliant with EC and TÜV certification — fully road-legal straight from the box
- AISI 304 stainless steel headers, T.I.G.-welded throughout for exceptional heat resistance and long service life
- CNC-machined titanium sleeves ensure precise fitment and optimised exhaust flow
- SC1-S silencer available in carbon or titanium, each finished with a carbon end cap for a racing aesthetic
- Carbon fibre heat shield included, adding thermal protection and a track-ready visual detail
Performance and Weight Savings
Removing unnecessary stock components and optimising the exhaust routing, the 2-1 AISI 304 stainless steel header feeds directly into the SC1-S silencer, reducing back-pressure and lowering operating temperatures. The result is a measurable improvement at both ends of the rev range: +1.6 hp at 10,000 rpm sharpens top-end urgency, while +2.3 Nm at 4,750 rpm fills in the mid-range for more confident, linear throttle response on the road. Shedding 2 kg from the exhaust position also noticeably lifts the YZF-R7's agility through direction changes and tightens its overall balance.
Sound and Road Legality
The SC1-S silencer produces a deep, bass-rich tone that rewards the R7's parallel-twin character without crossing legal noise limits. The system meets EURO 5 standards and carries EC and TÜV type approval, so it can be ridden on public roads across Europe without modification. Riders looking for that unmistakable SC-Project soundtrack — rich, purposeful and authoritative — without the restrictions of a track-only can will find this system hits the mark precisely.
Materials and Construction
SC-Project builds the STREET SC1-S using the same fabrication standards as its race catalogue. The full 2-1 header is constructed from AISI 304 stainless steel and joined with T.I.G. welding for a clean, durable finish. CNC-machined titanium sleeves connect each section with tight tolerances, eliminating leaks and ensuring consistent flow geometry. The SC1-S canister itself is offered in either a titanium or carbon finish, with a carbon end cap on both variants. The included carbon fibre heat shield rounds out the package with both a practical and visual upgrade over the stock system.
Fitment and Compatibility
This system is a direct, bolt-on replacement designed and tested exclusively for the Yamaha YZF-R7, covering model years 2021 through 2025. No cutting, fabrication or custom bracketing is required. The single-seat exhaust bracket supplied in the kit ensures correct alignment and a secure, rattle-free mount.
What's Included
- SC-Project SC1-S slip-on silencer (titanium or carbon, depending on part number selected)
- Complete 2-1 header in AISI 304 stainless steel
- Carbon fibre heat shield
- Single-seat exhaust bracket
- Mounting springs and bolts
- SC-Project laser-engraved logo badge
- SC-Project stickers
- 24-month official SC-Project warranty
- Homologation card for EC and TÜV approval
Part Numbers
- Carbon version: Y36A-C125C
- Titanium version: Y36A-C125T
Specifications
- Brand: SC-Project
- Model: STREET SC1-S
- Part number: Y36A-C125
- Fitment: Yamaha YZF-R7 (2021-2025)
- System type: Full exhaust system (2-1)
- Header material: AISI 304 stainless steel
- Silencer finish: Carbon (Y36A-C125C) or Titanium (Y36A-C125T)
- System weight: 5.7 kg
- Weight saving vs. stock: -2 kg (stock: 7.7 kg)
- Power gain: +1.6 hp at 10,000 rpm
- Torque gain: +2.3 Nm at 4,750 rpm
- Emissions compliance: EURO 5 (EC and TÜV certified)
What's includedEverything in the box▼
- SC-Project SC1-S slip-on silencer (titanium or carbon, depending on part number selected)
- Complete 2-1 header in AISI 304 stainless steel
- Carbon fibre heat shield
- Single-seat exhaust bracket
- Mounting springs and bolts
- SC-Project laser-engraved logo badge
FitmentWhich bikes this fits▼
- Yamaha YZF-R7 (2021–2025)
Questions, one topic at a time.
Get the real shipping cost for this item to your address — the same rates as checkout.
Choose a destination and hit Estimate — we fetch the live rates for this item.
We’re based in Germany. Standard delivery goes by DHL and national postal services and takes about 2–5 days within Germany, 1–2 weeks within the EU and 2–6 weeks outside the EU. Need it sooner? Express delivery reaches most of the world within a few days — just choose it at checkout where available.
Your exact shipping cost is calculated by destination and weight and shown at checkout before you pay — no hidden fees. Express delivery is selectable at checkout where available.
Yes, we ship to over 130 countries. Prices, taxes and delivery times for your destination are calculated automatically at checkout.
Within the EU, no — our prices already include all duties and EU VAT. For deliveries outside the EU (e.g. Switzerland, the UK or the USA), your order may be subject to import duties and taxes set by your country. These are collected by the carrier when your parcel arrives, aren’t included in our prices, and are outside our control.
As soon as your parcel ships we email you a tracking link, so you can follow it all the way to your door.
On out-of-stock items you can request a delivery time or leave your email to be notified the moment it returns — just use the notification box on the product.
You have the right to cancel within 14 days of receiving your order. Register your return by email first; once it’s approved you have a further 14 days to send the goods back. Items should be unused and in their original packaging.
Register your return by email with your order number before sending anything back, and we’ll send you the return instructions. Please note: returns that aren’t registered in advance can’t be accepted.
The quickest way is to place a new order for the size you need and register a return for the original by email — just let us know it’s an exchange.
We’re sorry — that shouldn’t happen. Contact us with your order number and a photo as soon as you can, and we’ll arrange a replacement or refund right away. Faulty goods are always covered by your statutory warranty.
Refunds go back to your original payment method, usually within 3–5 working days of your return reaching our warehouse.
PayPal, all major credit and debit cards (Visa, Mastercard, American Express), Klarna (pay later and instalments), Apple Pay, Google Pay and more — all processed securely via PayPal and Mollie.
Yes. Choose Klarna at checkout to split your purchase into flexible monthly installments.
Your payment is taken when you place your order. If you choose Klarna, you pay later according to Klarna’s terms.
Every payment runs over an SSL-encrypted connection through certified providers. We never see or store your full card details.
If your order hasn’t shipped yet, contact us as soon as possible and we’ll do our best to change or cancel it.
No — you can check out as a guest. An account simply lets you track orders and reorder faster.
For customers in the EU, prices are shown including your country’s local VAT. For customers outside the EU, prices are shown without VAT — instead, your country’s import taxes and duties may apply on delivery (see the customs question).
Yes. Your invoice is attached to your order confirmation email and is also available in your account.
Yes. We’re an authorised dealer, so every product is 100% original and comes with the full manufacturer warranty.
Yes. Everything we sell is genuine and comes with the manufacturer’s warranty, on top of your statutory rights. Keep your invoice as proof of purchase and contact us if you ever need to make a claim — we’ll help you through it.
Our team is happy to help. Use the contact button below and we’ll personally help you choose the right gear or part.
Measure your head circumference about one centimetre above your eyebrows and compare it with the size chart on this page. Between sizes? Choose the smaller one — the padding beds in with use.
Yes — it’s tested and approved to the current ECE 22.06 standard and road-legal across the EU.
Most of our touring and sport helmets are Pinlock-ready and many include the insert. Check the ‘What’s in the box’ section on this page for this model.
Yes — the cheek pads are channelled so the arms of your glasses slide in comfortably.
Take out the washable lining and hand-wash it in lukewarm water. Clean the shell and visor with a soft cloth and water only — never solvents.
Our team will personally help you choose the right gear or part — around 24h for a reply.