The facts.
| Brand | K-Tech |
|---|---|
| Part number | SBS-009 |
| Inner diameter | 39.70 mm |
| Outer diameter | 41.70 mm |
| Height | 20.00 mm |
| Wall thickness | 1.00 mm |
| Material | Hardened steel with copper and PTFE coating |
| Quantity | 2 slide bushings per kit |
| Fitment | Kawasaki Ninja 400 (2018–2023) |
DescriptionThe whole story▼
Smooth, responsive fork action is something you notice every single ride — and worn slide bushings are often the quiet culprit behind vague steering and a harsh front end. The K-Tech Slide Bushing Kit SBS-009 is a direct-fit, drop-in replacement for the Kawasaki Ninja 400 (2018–2023) front fork, engineered from hardened steel with copper and PTFE-coated contact surfaces to restore factory feel and then some.
Key Features
- Direct OEM replacement for the Kawasaki Ninja 400 front fork — no modifications required, straightforward service fitment.
- Hardened steel construction with a copper coating provides exceptional resistance to wear, extending service intervals on a bike ridden daily or at weekends.
- PTFE-coated contact surfaces minimise friction between fork tube and slider, resulting in noticeably smoother fork travel and more precise steering response.
- Exact-fit dimensions (39.70 mm inner diameter, 41.70 mm outer diameter, 20.00 mm height, 1.00 mm wall thickness) ensure correct preload and zero slop.
- Complete kit contains two slide bushings — enough for a full fork rebuild in one go, saving a return trip to the workshop.
- Backed by K-Tech's reputation for precision suspension components used at every level from commuter to circuit.
Build Quality and Everyday Performance
K-Tech designed the SBS-009 with the cost-conscious, regularly riding Ninja 400 owner in mind. Whether the bike sees daily commutes, weekend canyon runs or the occasional track day, fork bushings wear progressively and their degradation is easy to miss until handling genuinely suffers. Replacing them with a quality set like this — rather than waiting for the OEM part to arrive — means minimal downtime and a front end that feels tight from the first corner.
The copper intermediate layer bonds securely to the hardened steel substrate and acts as a break-in surface, while the PTFE outer coating handles the sliding contact with the inner fork tube. The result is low static friction, smooth dynamic movement and a front suspension that communicates road texture cleanly rather than wallowing or binding.
Fitment and Compatibility
This kit is designed exclusively for the following model:
- Kawasaki Ninja 400 — model years 2018, 2019, 2020, 2021, 2022, 2023
Always verify your fork tube diameter before fitting. Installation requires specialist fork service tools and knowledge of suspension assembly procedures. K-Tech recommends fitting by an authorised K-Tech Service Centre to ensure safe and correct installation.
Specifications
| Specification | Detail |
|---|---|
| Part number | SBS-009 |
| Inner diameter | 39.70 mm |
| Outer diameter | 41.70 mm |
| Height | 20.00 mm |
| Wall thickness | 1.00 mm |
| Material | Hardened steel with copper and PTFE coating |
| Quantity | 2 slide bushings per kit |
| Fitment | Kawasaki Ninja 400 (2018–2023) |
What's includedEverything in the box▼
- 2x K-Tech slide bushings
FitmentWhich bikes this fits▼
- Kawasaki Ninja 400 (2018–2023)
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