Sprint Filter PM01S air filter
02 · Data & docs

The facts.

DescriptionThe whole story▼

The MGX-21 is the least predictable thing Moto Guzzi has built in decades: a carbon-bodied bagger on a twenty-one inch front wheel, with the big twin half-buried in bodywork. The bodywork is what matters here. Panels and cases interrupt the air that would otherwise move around an air-cooled engine, and less air over the motor means a warmer engine bay, most of all at low speed. Warmth is what mobilises filter oil, and this element has none in it to mobilise.

Key Features

  • Dry medium — an enclosed, warm airbox has nothing in it to soften or carry away
  • Roughly double the filtering area of other performance elements
  • Threads from ø 22 microns, woven to a set aperture
  • Fits the series airbox without alteration and needs no remap
  • Restored with compressed air, so there is no consumable to keep in stock
  • Two years of warranty from the purchase date

Bodywork changes the thermal picture

An unfaired California has moving air over everything. The MGX-21 does not, and its airbox lives in a warmer place because of it. On an oiled gauze that is precisely the condition under which the film thins and travels to where the sensing elements sit, and a contaminated sensor does not fail cleanly — it reads low, the fuelling follows it down, and nothing presents as a fault. A dry weave has no such mode. Nor does it add power: what it offers is one variable fewer in a warm, enclosed space.

Small production run, widely shared part

The MGX-21 was built from 2016 to 2020 in small numbers, which normally means an uncomfortable parts tail a decade later. Not in this case. The same reference covers the whole California 1400 range, the Griso and Stelvio lines, both V85 models and Aprilia's V4 machines — twenty-seven in total, several still in production. Availability here has nothing to do with how many MGX-21s were made, and because the panel is cleaned rather than replaced, most owners will never order a second. The reference is also the whole of the identification: order by PM01S and the small production run stops being a problem to solve.

Care and cleaning

Compressed air aimed outwards from the clean side is the standard service and takes minutes. For a deeper clean use lukewarm water with a mild detergent, rinse until the run-off is clear, and dry it in air with no heat and no flame involved; it goes back into the box dry, with nothing applied to it. The PM01S maintenance sheet is filed under the Downloads tab.

Fitment & Compatibility

Made for the Moto Guzzi MGX-21, 2016 to 2020. The Fitment tab carries all twenty-seven Aprilia and Moto Guzzi machines that share this element.

DownloadsOwner's manual · brochure▼
FitmentWhich bikes this fits▼
  • Aprilia RXV4.5 (2006–2014)
  • Aprilia SXV4.5 (2006–2014)
  • Aprilia RXV5.5 (2006–2014)
  • Aprilia SXV5.5 (2006–2014)
  • Aprilia RSV 1000 R (2000)
  • Aprilia RSV 1000 R Factory (2005–2007)
  • Aprilia RSV4 R (2010)
  • Aprilia RSV4 R Aprc (2013–2014)
  • Aprilia RSV4 R Aprc ABS (2013–2014)
  • Aprilia Tuono R - Factory (2006–2009)
  • Aprilia Tuono V4 R - Aprc (2011–2015)
  • Aprilia Tuono V4/Factory (2016–2020)
  • Aprilia Tuono V4/Factory (2021–2026)
  • Moto Guzzi Griso 850 (2006–2007)
  • Moto Guzzi V85 TT (2018–2020)
  • Moto Guzzi V85 Travel (2020–2026)
  • Moto Guzzi Griso 1100 (2005–2008)
  • Moto Guzzi Griso 8V - 8V Special Edition (2007–2013)
  • Moto Guzzi Griso SE 8V (2015–2026)
  • Moto Guzzi Stelvio (2008–2009)
  • Moto Guzzi Stelvio 8V STD - NTX (2011–2016)
  • Moto Guzzi Stelvio STD - NTX (2009–2010)
  • Moto Guzzi California Custom ABS (2013–2016)
  • Moto Guzzi California Touring ABS (2013–2020)
  • Moto Guzzi California Audace (2015–2020)
  • Moto Guzzi California Eldorado (2015–2020)
  • Moto Guzzi MGX-21 (2016–2020)
07 · Support

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08 · Paddock

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