K-Tech RAZOR-R rear shock absorber for KTM RC 390 2022–2025 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandK-Tech
ModelRAZOR-R
Part number279S-022-155-005
FitmentKTM RC 390 (2022–2025)
Spring series46-180
Total length308.50 mm
Length tolerance-7 mm / +3 mm
Stroke60.00 mm
Spring force120.00 N
Gas pressure10.00 bar
DescriptionThe whole story

Built from the ground up with premium-grade components, the K-Tech RAZOR-R shock absorber transforms the rear suspension of the KTM RC 390 (2022–2025) into a finely tunable platform that leaves the factory unit far behind. Nitrogen-charged and machined to tight tolerances, this is a unit where material quality and engineering precision are evident before you even turn a clicker.

Key Features

  • 12-way adjustable compression damping for precise tuning across every riding scenario
  • 12-way adjustable rebound damping for confident control during fast direction changes
  • Adjustable spring preload to dial in ride height for your weight and riding style
  • Length adjustment for fine-tuning chassis geometry and handling balance
  • Nitrogen (N2) pressurised at 10.00 bar, eliminating aeration and ensuring consistent damping throughout a session
  • 46-180 series spring delivering improved traction and rear-end composure over the stock unit
  • Multiple spring rate options available to match precise rider weight requirements

Premium Construction

The RAZOR-R is built around a 35.00 mm RCPU body and a 14.00 mm rod — dimensions chosen to deliver the stiffness and damping resolution that serious road and track riders demand. The upper and lower mounts are machined eye-type brackets, each measuring 32.00 mm wide with a 10.00 mm bolt diameter, ensuring a direct, rattle-free interface with the RC 390's original mounting points. Every material and tolerance in this unit reflects K-Tech's British-engineered approach to suspension: built to last and built to perform.

On the Road and on Track

With a total length of 308.50 mm (adjustment range -7 mm / +3 mm), a stroke of 60.00 mm, and a spring force of 120.00 N, the RAZOR-R sits in the sweet spot between a weekend road upgrade and a genuine track-day weapon. The 12 mm of available preload adjustment means riders of varying weights can achieve the correct sag figure without compromise, while the independent compression and rebound circuits let you adapt to everything from smooth A-roads to aggressive circuit sessions without touching a spanner.

Fitment & Compatibility

This unit is engineered specifically for the following model:

  • KTM RC 390 — model years 2022, 2023, 2024, 2025

Part number: 279S-022-155-005. Fits directly to the original mounting points; no frame modification required.

Installation must be carried out exclusively by an authorised K-Tech Service Centre. Specialist tools and technical expertise are required to ensure maximum performance and safety.

Specifications

Specification Value
Spring series 46-180
Total length 308.50 mm
Length tolerance -7 mm / +3 mm
Stroke 60.00 mm
Spring force 120.00 N
Gas pressure 10.00 bar
Upper mount Eye, 32.00 mm width, 10.00 mm bolt diameter
Lower mount Eye, 32.00 mm width, 10.00 mm bolt diameter
Compression clicks 12
Rebound clicks 12
Preload 12 mm
RCPU body diameter 35.00 mm
RCPU rod diameter 14.00 mm
What's includedEverything in the box
  • 1x K-Tech RAZOR-R shock absorber for KTM RC 390 (2022–2025)
  • Mounting hardware for straightforward and secure installation
FitmentWhich bikes this fits
  • KTM RC 390 (2022–2025)
07 · Support

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08 · Paddock

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