⟲ 360° — drag meThe facts.
| Brand | SC-Project |
|---|---|
| Model | SC1-R Slip-On + Titanium Cat Replacement Pipe |
| Fitment | Yamaha YZF-R1 / YZF-R1M RN65 (2020–2026) |
| Available lengths | 250 mm, 350 mm |
| Available materials | Titanium, Carbon |
| End cap | Carbon fibre |
| Link pipe material | Titanium |
| Use | Racing / track only — no road homologation |
| Warranty | 24 months official SC-Project warranty |
DescriptionThe whole story▼
Born directly from MotoGP development, the SC-Project SC1-R slip-on silencer combined with a titanium cat replacement pipe transforms the Yamaha YZF-R1/M RN65 into a genuine track weapon — shedding up to 5 kg over the stock exhaust while unleashing a deep, aggressive racing note that commands attention on every straight.
Key Features
- Asymmetric diamond-shaped canister with carbon fibre end cap for an unmistakably aggressive racing aesthetic
- Titanium de-cat link pipe precision-engineered for optimised exhaust flow and measurable power gains
- Significant weight saving: 250 mm variant saves 5 kg (SC: 3 kg vs. stock: 8 kg); 350 mm variant saves 4.5 kg (SC: 3.5 kg vs. stock: 8 kg)
- CNC-machined titanium collars and hand-TIG-welded joints guarantee a perfect fit and long-term durability
- dB killer included — tune the sound level to suit track day regulations or open-pit sessions
- Ready for the original lambda sensor connection; compatible with standard pillion rearsets
- Two lengths, two materials — four part numbers to match your exact build
Track-Focused Performance
SC-Project's decades of circuit racing experience are distilled into every weld of the SC1-R. The titanium cat replacement pipe eliminates the catalytic converter's restriction, dramatically improving throttle response and exhaust flow at the high RPM ranges where the R1's crossplane four truly comes alive. Hydroforming technology shapes the canister body to exacting tolerances, ensuring consistent flow dynamics race after race.
Sound Levels by Configuration
The SC1-R's acoustic character is as purposeful as its weight figures. Measured at 6,500 rpm:
- 250 mm with dB killer: 108 dB
- 250 mm without dB killer: 115 dB
- 350 mm with dB killer: 107 dB
- 350 mm without dB killer: 110 dB
Run the dB killer for controlled track-day noise limits, or remove it entirely for unrestricted sound pressure on closed circuits.
Materials and Construction
The SC1-R is available in two premium finishes — titanium outer shell for that raw, heat-blued racing look, or carbon fibre outer shell for maximum weight reduction combined with visual drama. Both variants share the same carbon fibre end cap, chosen for its exceptional temperature resistance and the signature SC-Project aesthetic. Every joint is hand-TIG-welded by SC-Project's craftsmen in Italy, holding the same standards applied to their WorldSBK and MotoGP customer kits.
Fitment and Compatibility
This kit is engineered exclusively for the Yamaha YZF-R1 and YZF-R1M, chassis code RN65, covering model years 2020 through 2026. It retains compatibility with the original pillion rearsets and includes provisions for the factory lambda sensor. Note: product images currently show the RN49 variant — updated RN65 imagery will follow shortly.
Part Numbers
- 250 mm Carbon: Y11C-DET90C
- 250 mm Titanium: Y11C-DET90T
- 350 mm Carbon: Y11C-DET93C
- 350 mm Titanium: Y11C-DET93T
Important Notice
This exhaust system is for racing use only and carries no road homologation. It is not approved for use on public roads. Price and ordering on request.
Specifications
- Brand: SC-Project
- Model: SC1-R Slip-On + Titanium Cat Replacement Pipe
- Fitment: Yamaha YZF-R1 / YZF-R1M RN65 (2020–2026)
- Silencer weight — 250 mm: 3 kg | 350 mm: 3.5 kg
- Weight saving — 250 mm: 5 kg | 350 mm: 4.5 kg vs. stock (8 kg)
- Available lengths: 250 mm, 350 mm
- Available materials: Titanium, Carbon
- End cap: carbon fibre
- Link pipe material: titanium
- Use: racing / track only — no road homologation
- Warranty: 24 months official SC-Project warranty
What's includedEverything in the box▼
- SC1-R slip-on silencer (titanium or carbon — depending on part number)
- Titanium de-cat link pipe
- Carbon fibre heat shield
- Single-seat exhaust bracket
- Mounting springs and bolts
- SC-Project sticker
FitmentWhich bikes this fits▼
- Yamaha YZF-R1/M RN65 (2020–2026)
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.