K-Tech RAZOR-R Shock Absorber for KTM RC 390 (2022–2025) – Part 279S-022-155-005
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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 |
| Brand | K-Tech |
|---|---|
| Model | RAZOR-R |
| Part number | 279S-022-155-005 |
| Fitment | KTM RC 390 (2022–2025) |
| 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 |
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1x K-Tech RAZOR-R shock absorber for KTM RC 390 (2022–2025)
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Mounting hardware for straightforward and secure installation
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// K-Tech
K-Tech RAZOR-R Shock Absorber for KTM RC 390 (2022–2025) – Part 279S-022-155-005

Tech specs
- Brand
- K-Tech
- Model
- RAZOR-R
- Part number
- 279S-022-155-005
- Fitment
- KTM RC 390 (2022–2025)
- 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
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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