K&N Racing Oil Filter for Yamaha YZF-R6 RJ11, RJ15 & RJ27 (2006–2026) – KN-204-1

Engineered specifically for the Yamaha YZF-R6 in chassis variants RJ11, RJ15 and RJ27 across the full 2006–2026 model run, the K&N KN-204-1 Racing Oil Filter makes routine servicing straightforward while delivering the filtration quality your engine deserves — whether the bike sees daily commutes, weekend blasts or circuit duty.

Key Features

• 17 mm hex nut allows removal and installation with a standard spanner — no specialist tools needed, saving time on every service interval.
• Hex nut includes a safety-wire drilling, satisfying technical scrutineering requirements for track days and circuit racing without additional modification.
• Pre-lubricated O-ring speeds up installation and ensures a reliable seal first time, every time.
• Anti-drain-back valve prevents dry starts by retaining oil in the filter after shutdown, protecting critical engine components on every cold start.
• Reinforced canister with 50% greater wall thickness and a double-rolled seam resists stone strike damage and withstands elevated oil pressures.
• Advanced synthetic filter media delivers a high flow rate alongside superior filtration, and is fully compatible with both mineral and fully synthetic engine oils — including racing fuel environments.

Built for Real-World and Track Use

The KN-204-1 draws on K&N's motorsport heritage to give everyday R6 owners a filter that goes beyond the stock replacement brief. The thicker-walled canister handles the knocks and vibration that come with spirited riding, while the high-flow synthetic media keeps oil pressure consistent under sustained high-rpm use. The safety-wire hole in the hex nut is a detail that racers need and road riders can simply ignore — it costs nothing but adds confidence for anyone who occasionally visits a circuit.

The pre-greased O-ring eliminates the guesswork of whether to apply additional lubricant, and the anti-drain-back valve means the first few seconds after a cold start are as well-protected as any moment at operating temperature. For an R6 owner who services their own machine, these are the details that make a filter feel like a genuine upgrade rather than a like-for-like swap.

Fitment & Compatibility

This filter is a direct-fit replacement for the following Yamaha models:

• Yamaha YZF-R6 RJ11 (2006–2007)
• Yamaha YZF-R6 RJ15 (2008–2016)
• Yamaha YZF-R6 RJ27 (2017–2026)

Specifications

• Part Number: KN-204-1
• Brand: K&N
• Type: Racing oil filter
• Hex size: 17 mm
• Filter media: Synthetic
• Wall construction: Heavy-duty canister, 50% increased wall thickness, double-rolled seam
• Oil compatibility: Mineral and fully synthetic engine oils
• Safety-wire provision: Yes — drilled hex nut
• Anti-drain-back valve: Yes
• Fitment: Yamaha YZF-R6 RJ11, RJ15, RJ27 (2006–2026)