K-Tech GBS-003 fork slide bush kit for Yamaha YZF-R3 2019–2026
02 · Data & docs

The facts.

Technical data
BrandK-Tech
Part numberGBS-003
FitmentYamaha YZF-R3 (2019–2026)
Inner diameter37.00 mm
Outer diameter41.00 mm
Height12.00 mm
Wall thickness2.00 mm
MaterialHardened steel with copper and PTFE coating
Quantity2 fork slide bushes
DescriptionThe whole story

Keeping your Yamaha YZF-R3's forks smooth and precise through everyday commutes and weekend rides starts with the right slide bushes. The K-Tech GBS-003 fork slide bush kit is a direct, exact-fit replacement for the YZF-R3 (2019–2026), manufactured from hardened steel with copper and PTFE coatings that dramatically reduce friction, resist corrosion, and restore the fork's original responsive feel — all at a price that makes proper maintenance straightforward.

Key Features

  • Exact fitment for the Yamaha YZF-R3 (2019–2026) — no modification required
  • Hardened steel construction with copper underlayer for strength and corrosion resistance
  • PTFE-coated contact surfaces minimise friction and deliver a smoother, more consistent fork action
  • Protects against premature wear on both the bush and fork tube
  • Supplied as a complete two-piece set covering both fork legs in a single purchase

Why Replacing Fork Slide Bushes Matters

Worn fork slide bushes are one of the most common and most overlooked causes of vague, notchy front-end feel. As the bushes degrade, the fork internals develop play, leading to imprecise steering feedback and uneven damping response. For a rider using the YZF-R3 day to day, fresh K-Tech GBS-003 bushes restore the light, linear fork action the bike was designed to deliver — a noticeable improvement on every road.

Construction and Materials

K-Tech manufactures the GBS-003 from hardened steel with a copper intermediate coating that bonds the PTFE surface layer securely and provides a secondary barrier against moisture ingress. The PTFE face is the key to the kit's low-friction performance: it allows the fork slider to move with minimal resistance under load, reducing the stiction that causes the front end to feel wooden or abrupt over small bumps. The result is a fork that tracks more faithfully on uneven surfaces and responds more immediately to rider inputs.

Fitment and Compatibility

These bushes are designed exclusively for the following model:

  • Yamaha YZF-R3 — model years 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026

They are not compatible with any other Yamaha model or year range. Installation should be carried out by an authorised K-Tech service centre using the appropriate specialist tools, ensuring the bushes are seated correctly and the fork assembly is returned to its full working specification.

Specifications

Parameter Value
Inner diameter 37.00 mm
Outer diameter 41.00 mm
Height 12.00 mm
Wall thickness 2.00 mm
Material Hardened steel with copper and PTFE coating
Quantity 2 bushes (complete set)
Part number GBS-003
Fitment Yamaha YZF-R3 (2019–2026)
What's includedEverything in the box
  • 2x K-Tech fork slide bushes
FitmentWhich bikes this fits
  • Yamaha YZF-R3 (2019–2026)
07 · Support

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