Gilles OFC oil filler cap for Kawasaki NINJA 650, with the colour inserts⟲ 360° — drag me
02 · Data & docs

The facts.

Technical data
BrandGilles Tooling
SeriesOFC
Part numberOFC-20-25-1
TypeOil filler cap
ThreadM20 x 2.5
Head diameter29.5 mm
MaterialAircraft-grade aluminium
Inserts4 anodised colour inserts, all included
FitmentKawasaki NINJA 650 (2017–2019, 2026)
Road approvalNot required (Gilles)
DescriptionThe whole story▼

The Ninja 650's 649 cc parallel twin is one of Kawasaki's most proven engines, used in several models. Gilles lists the OFC-20-25-1 for the Ninja 650 of type EX650K (2017 to 2019) and the new EX650S from 2026.

Key Features

  • Thread M20 x 2.5, head diameter 29.5 mm
  • Hexagon socket plus the enclosed tool for opening and closing
  • High-grade aircraft aluminium
  • Fitted in a few seconds, according to Gilles
  • Distinctive Gilles design
  • No registration required, according to Gilles

The gap

Models built between 2020 and 2025 are not in Gilles' list for this cap.

A reliable twin

The engine asks for little besides regular oil checks, and a cap that opens easily makes those checks less of a chore.

A2 favourite

The Ninja 650 has been one of the most common A2 bikes for years, and many owners learn to check and top up oil on it. A cap that opens without pliers makes that first lesson easier.

Road Approval

No registration required, says Gilles, and no TÜV either: the OFC goes on the Kawasaki NINJA 650 without an inspection and without any change to the papers.

Scope of Delivery

One Gilles OFC oil filler cap (M20 x 2.5), all four anodised colour inserts and the tool for opening and closing.

Fitting

Swap the caps with the bike upright and the engine cold. Hand-tight first, then snug with the tool; overtightening does nothing for the seal.

Specifications

  • Brand: Gilles Tooling
  • Series: OFC
  • Part number: OFC-20-25-1
  • Type: Oil filler cap
  • Thread: M20 x 2.5
  • Head diameter: 29.5 mm
  • Material: Aircraft-grade aluminium
  • Inserts: 4 anodised colour inserts, all included
  • Fitment: Kawasaki NINJA 650 (2017–2019, 2026)
  • Road approval: Not required (Gilles)
What's includedEverything in the box▼
  • 1x Gilles OFC oil filler cap, M20 x 2.5
  • 4 anodised colour inserts
  • Tool for opening and closing
FitmentWhich bikes this fits▼
  • Kawasaki NINJA 650 (2017–2019, 2026)
07 · Support

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