K-Tech DDS Closed Cartridge Kit Yamaha YZF-R7 (21-26) 155-021-270-015
K-Tech DDS Closed Cartridge Kit Yamaha YZF-R7 (21-26) 155-021-270-015
Delivery time on request
K-Tech DDS Closed Cartridge Kit for Yamaha YZF-R7 (2021–2026) – Maximum control and performance for road and track
The K-Tech DDS (Direct Damping System) Closed Cartridge Kit was developed specifically for the original fork of the Yamaha YZF-R7 (21–26). This state-of-the-art damping system uses a 20 mm piston, which ensures improved oil flow through the 31 mm control valves, enabling precise and highly sensitive damping control.
The patented DDS design prevents cavitation and guarantees consistent performance even under extreme conditions. The independently operating damping circuits (asymmetric system) increase dynamics and improve response time. A spring force keeps the system stable and reliable at all times.
Product highlights:
- 30-way adjustable compression and rebound damping for optimum setup
- 18 mm preload adjustment for individual fine tuning
- DDS technology for consistent damping in all riding conditions
- 8 mm piston rod to reduce system offset
- 20 mm piston for improved oil flow and greater damping control
- 31 mm control piston for better feedback and faster response
- Patented design to eliminate cavitation
- Increased travel compared with the original cartridge
- Proven in racing: used in the British Superbike and at the Isle of Man TT
Scope of delivery:
- 3 pairs of springs for individual setup
- Special tools for easy replacement
Technical data:
- Spring: 36-260 series
- Internal diameter: 20 mm | 32 mm
- Outer diameter: 8 mm
- Length: 717 mm
- Compression clicks: 16 (recommended)
- Rebound clicks: 18 (recommended)
- Preload: 10 mm (recommended)
Important note: Proper installation should be carried out exclusively by an authorized K-Tech Service Center in order to ensure maximum safety and optimum performance.
Item number: 155-021-270-015
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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.
