K-Tech 20IDS Open Cartridge Kit for KTM RC 390 2022–2025, part 120-022-155-005
02 · Data & docs

The facts.

Technical data
BrandK-Tech
Part number120-022-155-005
System20mm Independent Damping System (20IDS)
Inner diameter20 mm
Outer diameter10 mm
Length700 mm
Stroke125 mm
Compression adjustment30 clicks (independent)
Rebound adjustment30 clicks (independent)
Preload adjustment18 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)
07 · Support

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