SC-Project Slip-On S1 Yamaha YZF-R6 RJ27 (17-26) Y21A-L41T
SC-Project Slip-On S1 Yamaha YZF-R6 RJ27 (17-26) Y21A-L41T
Delivery time on request
SC-Project Slip-On S1 for Yamaha YZF-R6 RJ27 (17-26) – Lightness, Performance & Road Approval!
Superbike Technology for your Yamaha YZF-R6!
The SC-Project S1 slip-on silencer is a benchmark in the Superbike World Championship and brings racing technology to the street! This titanium slip-on with carbon end cap is for anyone looking for a lightweight, high-performance & aggressive silencer that is also EURO 4 approved.
✔️ Conical titanium silencer for aerodynamic performance & low weight
✔️ Carbon-fiber end cap with special sound-absorbing material for maximum heat resistance
✔️ Laser-engraved SC-Project logo for a premium racing look
✔️ T.I.G.-welded titanium joints for maximum durability & visual perfection
✔️ CNC-machined titanium bushings for maximum precision & perfect fit
✔️ With dB killer for adjustable sound & road approval (EURO 4 compliant)
Maximum Performance & Significant Weight Savings
With the SC-Project S1 slip-on, your Yamaha YZF-R6 becomes lighter & more powerful!
✔️ +2.8 hp @ 14,000 rpm – for improved acceleration & top speed
✔️ +1.4 Nm torque @ 12,000 rpm – for optimized throttle response & more pulling power
✔️ Lightweight construction for improved agility & handling
✔️ Titanium link pipe for optimized exhaust flow & maximum efficiency
Thanks to the use of ultralight titanium & carbon, this exhaust system delivers improved riding dynamics, greater agility & optimized power delivery.
Powerful Racing Sound with Road Approval!
The SC-Project S1 silencer delivers a deep, sporty & aggressive sound that turns your YZF-R6 into a true racing machine.
Sound levels:
✔️ With dB killer – everyday-usable & sporty sound
✔️ Without dB killer – uncompromising MotoGP sound with the full frequency range
✅ Thanks to EURO 4 approval, perfectly suited for road & track use!
High-Quality Materials & First-Class Finish
The SC-Project S1 slip-on system combines state-of-the-art racing technology with the best materials for maximum durability & performance.
✔️ Titanium muffler for extremely low weight & racing look
✔️ CNC-machined titanium bushings for maximum precision & optimized exhaust gas flow
✔️ T.I.G.-welded titanium components for maximum durability
✔️ Integrated carbon-fiber heat shield for improved thermal management
This combination of high-end materials & innovative manufacturing technology makes this system the ultimate racing upgrade for your Yamaha YZF-R6!
Scope of delivery – everything for perfect installation
✔️ SC-Project S1 slip-on muffler (titanium with carbon end cap – Y21A-L41T)
✔️ Mounting springs & screws for easy & secure installation
✔️ SC-Project laser logo for an exclusive racing finish
✔️ SC-Project sticker for the ultimate racing look
✔️ 24-month official SC-Project warranty
✔️ EURO 4 homologation card for road approval
This kit is Ready-to-Ride – for maximum sound, road approval & performance!
Item number & availability
- Titanium version with carbon end cap (Y21A-L41T)
Important notes
ROAD APPROVAL (EURO 4) – for legal use on public roads
Price & ordering only on request !!!
Inquire now & give your Yamaha YZF-R6 the ultimate racing sound & performance boost!
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About Us
About Us
Our passion for quality and innovation drives us to offer you the best products and services for motorcycle enthusiasts. From exclusive high-performance parts to tailor-made solutions — your riding experience is at the center of everything we do.
Shipping & Returns
Shipping & Returns
We ship with DHL and FedEx — if requested, also via express. If an item is in stock, shipping via express can, in many cases, be delivered within 1 business day. Standard delivery time is typically about 2–5 business days within the country, and worldwide usually about 1 week. Please check the available shipping options and transit times in the cart, as we offer several shipping providers depending on the country.
Returns must be registered in advance by email and are possible according to our return policy (14 days to request a return + 14 days return shipping deadline after approval). Please note: Unregistered returns will not be accepted. You can find all details on the terms, exceptions, and refunds in our return policy.
Your payment information is processed securely. We do not store any credit card details and we have no access to your credit card information.
More information in our FAQs
Write to our team via email – we’ll get back to you as quickly as possible.
How long does it take to process my order?
How long does it take to process my order?
If the item is in stock, we usually process your order very quickly; in many cases it can even be shipped the same day.
Our processing times are Monday to Friday, 07:30–16:30.
Do you ship internationally?
Do you ship internationally?
Yes, we ship worldwide. Shipping is carried out depending on the country and the selection, via DHL or FedEx.
What is your return policy?
What is your return policy?
Returns must be registered in advance by email. You can request a return within 14 days of receiving the item and, after approval, you have another 14 days to send it back.
Important: Unregistered returns are not accepted. All details can be found in our cancellation policy.
What does “delivery time on request” mean?
What does “delivery time on request” mean?
“Delivery time on request” means the item is generally not in stock right away and may need to be ordered separately. Please contact us before purchase – we’ll check availability and tell you the estimated delivery time.
Do you offer express shipping?
Do you offer express shipping?
Yes, we offer express shipping. If an item is in stock, in many cases shipping can be completed within 1 business day (depending on the country and shipping option). You can see the available shipping methods in the shopping cart.

