SLS / AIS closure cap JetPrime Aprilia RS 660 (20-26) JP ES 660
SLS / AIS closure cap JetPrime Aprilia RS 660 (20-26) JP ES 660
Delivery time on request
JetPrime SLS/AIS closure cap for Aprilia RS 660 (2020-2026)
Remove the troublesome secondary air injection system (PAIR) from your Aprilia RS 660 (20-26) and enhance your bike's performance with the high-quality SLS/AIS closure cap from JetPrime. The JP ES 660 kit includes a CNC-machined block-off plate that replaces the original cap and rubber cover to securely seal the hole in the air filter box. The closure cap helps prevent unwanted exhaust pops and misfires that often occur when using aftermarket exhaust systems.
The PAIR system was originally designed to improve emissions from stock exhaust systems, but it leads to issues such as exhaust pops and misfires when you install aftermarket exhausts. With this kit, you can completely remove the PAIR system, including the valve, cover, and hoses. This ensures reliable fuel tuning and an improved A/F ratio (air-fuel ratio), optimizing overall performance and throttle response.
Main features of the SLS/AIS closure cap:
- Eliminates exhaust pops and misfires when using aftermarket exhausts
- Achieves a reliable A/F ratio for precise fuel tuning
- Improved throttle response when using complete aftermarket exhaust systems
- Complete removal of the PAIR system (including valve, cover, and hoses)
- Enables a clean and powerful engine tuning
High quality standards:
- CNC-machined block-off plate made from 7075 aluminum for maximum durability and precision
- Heat-resistant rubber caps for long lifespan under extreme conditions
- Components designed for high performance and quality
- Tested and developed specifically for the Aprilia RS 660 (2020-2026)
Note: Race Use Only – This closure cap is intended exclusively for use on racetracks and is not approved for street use.
Why the JetPrime SLS/AIS closure cap is the best choice for your Aprilia RS 660:
- Prevents unwanted noises and misfires with aftermarket exhausts.
- Improves engine performance through reliable fuel tuning and optimized throttle response.
- High processing quality: CNC-machined 7075 aluminum ensures a durable and precise solution.
- Complete PAIR system removal: Remove the entire system for clean, more powerful performance.
Optimize the performance of your Aprilia RS 660 with the JetPrime SLS/AIS closure cap – ideal for track use!
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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.
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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.
