K-Tech Fork Slide Bush Kit Kawasaki ZX-4RR (2023–2026) SBS-003
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When lap times demand the most from your ZX-4RR's front end, every component in the fork assembly matters. The K-Tech SBS-003 slide bush kit is precision-engineered specifically for the Kawasaki ZX-4RR (2023–2026), restoring factory-accurate fork movement and delivering the kind of consistent, progressive damping feel that separates a well-sorted racebike from a compromised one.
Key Features
- Exact OEM-specification fitment developed exclusively for the Kawasaki ZX-4RR (2023–2026) — no adaptation required
- Hardened steel construction with a copper coating provides outstanding resistance to wear and corrosion under repeated, high-load fork cycles
- PTFE-coated contact surfaces minimise friction throughout the full stroke, delivering smoother, more predictable fork action on track
- Precise dimensional tolerancing ensures correct oil film distribution and consistent damping response, lap after lap
- Complete two-bush kit covers a full fork service in one purchase
Track Performance & Build Quality
On a high-revving, lightweight four-cylinder machine like the ZX-4RR, fork precision directly influences corner entry confidence and mid-corner balance. Worn or under-spec slide bushes introduce lateral play into the fork legs, corrupting the feedback loop between tyre and rider. The K-Tech SBS-003 eliminates that variable with a hardened steel shell dimensioned to match the OEM bore — inner diameter 35.70 mm, outer diameter 37.70 mm, height 20.00 mm, wall thickness 1.00 mm — while the PTFE-impregnated surface lining keeps stiction to an absolute minimum even as fork oil temperature rises through a long session.
Whether you are chasing personal bests at a club day or running a full race weekend, fresh slide bushes restore the factory damping characteristic that K-Tech suspension components are tuned around. Combined with a K-Tech cartridge or service kit, the SBS-003 forms the foundation of a properly rebuilt front end.
Installation Note
Fitting requires specialised fork tools and techniques. K-Tech recommends installation by an authorised K-Tech Service Centre to ensure full performance and safety are achieved. Incorrect installation can compromise fork function and rider safety.
Fitment & Compatibility
This kit is designed exclusively for the following model:
- Kawasaki ZX-4RR — model years 2023, 2024, 2025, 2026
Do not attempt to fit this kit to any other model or year range without verification from K-Tech.
Specifications
| Specification | Detail |
|---|---|
| Part Number | SBS-003 |
| Inner Diameter | 35.70 mm |
| Outer Diameter | 37.70 mm |
| Height | 20.00 mm |
| Wall Thickness | 1.00 mm |
| Material | Hardened steel with copper and PTFE coating |
| Quantity in kit | 2 slide bushes |
| Fitment | Kawasaki ZX-4RR (2023–2026) |
| Brand | K-Tech |
|---|---|
| Part Number | SBS-003 |
| Inner Diameter | 35.70 mm |
| Outer Diameter | 37.70 mm |
| Height | 20.00 mm |
| Wall Thickness | 1.00 mm |
| Material | Hardened steel with copper and PTFE coating |
| Quantity | 2 slide bushes |
| Fitment | Kawasaki ZX-4RR (2023–2026) |
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// K-Tech
K-Tech Fork Slide Bush Kit Kawasaki ZX-4RR (2023–2026) SBS-003

Tech specs
- Brand
- K-Tech
- Part Number
- SBS-003
- Inner Diameter
- 35.70 mm
- Outer Diameter
- 37.70 mm
- Height
- 20.00 mm
- Wall Thickness
- 1.00 mm
- Material
- Hardened steel with copper and PTFE coating
- Quantity
- 2 slide bushes
- Fitment
- Kawasaki ZX-4RR (2023–2026)
- Worldwide shipping
- Genuine parts & verified quality
- 14-day returns — in stock ships within 24h
- Personal email support
// Support
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