Melotti Racing AIS Valve Cover Set AIS.YA.3151 for Yamaha YZF-R1, studio view 1
02 · Data & docs

The facts.

Technical data
BrandMelotti Racing
PartAIS Valve Cover Set
Part numberAIS.YA.3151
FitmentYamaha YZF-R1 (2015-2025)
Road approvalNone documented, track use only
Made inItaly (Castello di Brianza)
DescriptionThe whole story▼

A Yamaha YZF-R1, built between 2015 and 2025, carries two AIS valves rather than one, and clearing both for track use means closing two holes in the cylinder head cleanly. Melotti Racing's AIS Valve Cover Set, sold as a matched pair, was built around exactly that job on this YZF-R1 generation.

Key Features

  • AIS valve cover set for the Yamaha YZF-R1, 2015 to 2025
  • Melotti part AIS.YA.3151, priced and sold as a pair
  • Aluminium construction for track bikes removing the AIS system
  • Fits without removing the reed valves, reusing their existing gasket
  • Rubber plug included to close the air-box opening
  • Same part also listed for the Yamaha YZF-R6
  • Black finish

Construction and Material Quality

Melotti machines the AIS.YA.3151 in aluminium, built as a matched pair of covers for the two AIS positions a YZF-R1 of this generation carries, one for each side of the cylinder head once the AIS lines and valves are stripped out for track use. Each cover goes on without needing the reed valves underneath to come out, reusing their existing gasket rather than demanding a fresh one, and a rubber plug supplied in the kit closes the matching hole in the air box. The listed price covers the full pair, not a single cover.

Two Covers, One Afternoon in the Workshop

An engine-prep session on a YZF-R1 heading to its first track outing tends to deal with both AIS positions in one sitting, since there is little reason to strip one side and leave the other, and Melotti's pricing for the set reflects exactly that habit. Because the existing reed-valve gaskets stay in place under both covers, the job does not expand into a wider seal-replacement task, and the supplied air-box plug finishes off the induction side in the same sitting. It is a tidy, contained job, usually ticked off well before anything involving the bike's clip-ons or brakes gets attention.

Fitment and Compatibility

Melotti lists the AIS.YA.3151 for the Yamaha YZF-R1 built between 2015 and 2025, matching our listing, and the identical set is also catalogued for the Yamaha YZF-R6 built between 2017 and 2020. Melotti's documentation does not mention the YZF-R1M specifically, so confirm with us before ordering if your bike is that variant. It pairs with Melotti's switch-and-support fittings, axle sliders and brake systems also offered for the same YZF-R1.

Road Approval

We hold no ABE for the AIS.YA.3151, and a YZF-R1 with its AIS system removed cannot be ridden on public roads in that state. It is supplied for racetrack and closed-circuit use, under the race organiser's own rules at a meeting.

Scope of Delivery

One AIS.YA.3151 set of two aluminium AIS valve covers in black, with the rubber air-box plug included, for the Yamaha YZF-R1.

Specifications

  • Part: AIS Valve Cover Set
  • Part number: AIS.YA.3151
  • Fitment: Yamaha YZF-R1 (2015-2025)
  • Road approval: None documented, track use only
  • Made in: Italy (Castello di Brianza)
FitmentWhich bikes this fits▼
  • Yamaha YZF-R1 (2015–2025)
  • Yamaha YZF-R6 (2017–2020)
07 · Support

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