
The facts.
| Brand | K-Tech |
|---|---|
| Part number | 120-022-155-005 |
| System | 20mm Independent Damping System (20IDS) |
| Inner diameter | 20 mm |
| Outer diameter | 10 mm |
| Length | 700 mm |
| Stroke | 125 mm |
| Compression adjustment | 30 clicks (independent) |
| Rebound adjustment | 30 clicks (independent) |
| Preload adjustment | 18 mm |
DescriptionThe whole story▼
Unlock the full potential of your KTM RC 390's standard fork legs with the K-Tech 20IDS Open Cartridge Kit — a precision-engineered upgrade that transforms everyday ride quality and delivers genuinely adjustable damping without the need for a complete fork overhaul. Whether you're commuting, canyon-carving or heading to the track, this kit gives you a suspension setup that actually works for you.
Key Features
- 20mm Independent Damping System (20IDS) designed specifically for the stock KTM RC 390 fork, retaining the original outer tubes
- 30 clicks of independent compression adjustment and 30 clicks of independent rebound adjustment for fine-grained, repeatable tuning
- 18 mm preload adjustment range to suit different rider weights and road conditions
- Increased stroke compared to the original cartridge, improving mid-corner composure and bump absorption
- Aircraft-grade aluminium construction throughout, hard-anodised and super-finished for long-term durability and consistent damper action
- Suggested baseline settings of 16 compression clicks and 18 rebound clicks give you a reliable starting point for daily riding
Everyday Usability and Real-World Value
The stock KTM RC 390 fork performs adequately from the factory, but it leaves a considerable amount of ride quality on the table. The K-Tech 20IDS kit addresses this directly by replacing the internals with a fully independent cartridge system that lets you dial in exactly how the bike behaves under braking, through corners and over rough surfaces — all without specialist workshop time every time you want to change a setting. Compression and rebound circuits operate independently, so adjusting one does not upset the other. This makes finding your preferred setup methodical and straightforward rather than a process of trial and error.
The hard-anodised, super-finished aluminium components resist corrosion and maintain consistent oil film behaviour across a wide temperature range, meaning the fork feels the same on a cold morning commute as it does after a long summer ride. The 700 mm overall length and 125 mm stroke are matched to the RC 390's geometry, preserving steering angles and ground clearance while genuinely improving feedback from the front tyre.
Installation Guidance
K-Tech recommend installation by an authorised K-Tech Service Centre to ensure correct fitting and optimum performance. Please note that matching fork springs (36-260 series) must be ordered separately — they are not included with this cartridge kit.
Fitment & Compatibility
This cartridge kit is designed exclusively for the following motorcycle:
- KTM RC 390 (2022, 2023, 2024, 2025)
Specifications
| Parameter | Value |
|---|---|
| Part number | 120-022-155-005 |
| System | 20mm Independent Damping System (20IDS) |
| Inner diameter | 20 mm |
| Outer diameter | 10 mm |
| Length | 700 mm |
| Stroke | 125 mm |
| Compression adjustment | 30 clicks (independent) |
| Rebound adjustment | 30 clicks (independent) |
| Preload adjustment | 18 mm |
| Suggested compression setting | 16 clicks |
| Suggested rebound setting | 18 clicks |
| Spring series (sold separately) | 36-260 series |
| Fitment | KTM RC 390 (2022–2025) |
FitmentWhich bikes this fits▼
- KTM RC 390 (2022–2025)
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.