K-Tech Razor-R Spring KTM RC 390 (14-21) 279S-014-155-005
K-Tech Razor-R Spring KTM RC 390 (14-21) 279S-014-155-005
Delivery time on request
K-Tech Razor-R Sprbein for KTM RC 390 (2014–2021)
Article number: 279S-014-155-005
Improve the driving behavior and performance of your KTM RC 390 (2014–2021) with the K-Tech Razor-R Federbein. This high -quality strut is the perfect choice for drivers who are a noticeable Performance increase and improved handling Search compared to standard equipment.
The Razor-R strut Was with a Compression damping and Rebound adjustment as well as an adjustable Spring preload and Length adjustment developed. This enables one Individual adaptation of the feather, which offers excellent performance both on the racetrack and on the street. The featherbone is with Nitrogen (n2) filled to ensure a uniform and constant damping performance.
With the 46-150 spring the Razor-R spring bone ensures better Traction and Chassis control, so that they are the full potential of their KTM RC 390 can exploit.
Product advantages of the K-Tech Razor-R Federbein:
✔️ Increased performance and control: Better traction and stability for sporty driving.
✔️ 12-fold adjustable compression damping: Exact adaptation for different driving conditions.
✔️ 14-way adjustable rebound in damping: Optimal control in the event of quick changes of direction.
✔️ Adjustable spring preload: Individual adaptation to the driver's weight and driving style.
✔️ Length adjustment: Flexible adjustment of the vehicle height for better control.
✔️ Filled with nitrogen (N2): Prevents foam formation and ensures even damping.
✔️ Simple assembly: Compatible with the original equipment and easy to replace.
✔️ Various spring -strength options available: For exact coordination on the driver's weight.
Technical data from the K-Tech Razor-R Federbein:
- Feather: 46-150 series
- Total length: 303.50 mm
- Local tolerance: -7 mm / +3 mm
- Hub: 53.00 mm
- Spring: 100.00 N
- Gas pressure: 10.00 bar
- Upper bracket: Eye, 32.00 mm width, 10.00 mm bolt diameter
- Lower bracket: Eye, 41.00 mm width, 10.00 mm bolt diameter
- Compression clicks: 12
- Rebound clicks: 14
- Preliminary tension: 11 mm
- RCU setting: 4.00 mm
- Diameter RCPU housing: 35.00 mm
- Diameter RCPU rod: 14.00 mm
Scope of delivery:
- 1x K-Tech Razor-R Federbein for KTM RC 390 (2014–2021)
- Assembly hardware For a simple and safe installation
Mounting instructions:
⚠️ Danger: The installation should only be done by a Authorized K-Tech Service Center take place.
🔧 Special tools and specialist knowledge are required for professional installation to ensure the maximum performance and safety of the spring.
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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 — and on request, we also offer express shipping. If an item is in stock, express shipping is possible in many cases within 1 business day. The standard delivery time is about 2–5 business days domestically, and typically about 1 week worldwide. Please check the available shipping options and transit times in the shopping cart, as we offer multiple shipping service 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 for the return shipment after approval). Please note: Unregistered returns will not be accepted. All details on terms, exceptions, and refunds can be found in our return policy.
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More Infos in our FAQs
Email our team – we’ll get back to you as soon 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 typically process your order very quickly—often the same day for dispatch.
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 selection with 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 you have another 14 days to send it back after approval.
Important: Unregistered returns will not be accepted. You can find all details in our cancellation policy.
What does “Delivery time on request” mean?
What does “Delivery time on request” mean?
“Delivery time on request” means that the item is usually not immediately in stock and may need to be ordered separately. Please contact us before purchasing – we’ll check availability and provide you with 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, dispatch can often be completed within 1 business day (depending on the country and shipping option). You can see the available shipping methods in the cart.

