Accossato by Marchald air filter AC5070 for TM Racing MX 450 4T
02 · Data & docs

The facts.

Technical data
BrandAccossato
TypeOff-road foam air filter
Part numberAC5070
ElementFoam filter element
UseOff-road (enduro, motocross)
FitmentTM Racing MX 450 4T (2015–2018)
CheckCompare with the application list before ordering
Road approvalNone documented, off-road and competition use
DescriptionThe whole story▼

The MX 450 4T tops TM's motocross four-stroke line-up, and Accossato's filter listing for it covers two part numbers, the AC5070 and the MTM704, both matched to the MX 450 FI built from 2015 to 2018. Looking at the AC5070 specifically, Accossato's own wording describes a filter built with off-road materials and technology for sustained hard use, with the foam element in the photograph carrying the Accossato by Marchald print.

Key Features

  • Accossato by Marchald air filter, part AC5070, for the TM Racing MX 450 4T (MX 450 FI), built 2015 to 2018
  • Foam filter element carrying the Accossato by Marchald print
  • Built with off-road materials and technology, in Accossato's own description, for sustained hard use
  • A second Accossato filter, part MTM704, is also listed for this bike
  • Accossato lists the same filter for the GasGas EC 125, the Sherco SE 125 and the TM Racing EN 250 4T
  • No approval documentation on file; built for off-road and competition use

Construction and Material Quality

Beyond the fitment and the build years, Accossato states that the AC5070 is built with the off-road materials and technology line used for the range, doing its actual job by keeping dust out of the throttle body side of the engine; no oil is specified alongside it. The foam itself takes the Accossato by Marchald print and matches the standard air box shape fitted to the MX 450 4T. Where the foam has started coming apart at a seam, or has left a visible gap against the housing, replacing it is the only option that keeps it sealed.

Running the Biggest Bike in the Pit

As the largest four-stroke motocross bike TM builds, the MX 450 4T often sits in a pit alongside smaller machines ridden by the same rider or team across a season, and it is easy for the filter on the biggest bike to get the same quick glance as the others when it is actually working harder on a comparable track. Giving the AC5070 a proper look rather than a quick glance after a moto on this particular bike, and not assuming the schedule that suits a smaller machine automatically carries across, keeps the filter ahead of what the engine is actually pulling through it. A second AC5070 or MTM704 cleaned and bagged in the pit box means a tired filter never has to wait for a wash before the next moto.

Fitment and Compatibility

On the MX 450 FI, covering 2015 to 2018, Accossato names both the AC5070 and the MTM704 as filters that fit, so the years given here apply to either code. The AC5070 side of that listing also reaches the GasGas EC 125, the Sherco SE 125 and the TM Racing EN 250 4T. The part number on the filter actually removed from the bike is the reliable way to tell the two codes apart.

Road Approval

No approval documentation is on file for the AC5070, so Accossato lists it for off-road and competition use only, not for road-registered motorcycles.

Scope of Delivery

Supplied as a single AC5070 foam air filter element, ready to fit into the MX 450 4T's air box; filter oil is not included.

Specifications

  • Type: Off-road foam air filter
  • Part number: AC5070
  • Element: Foam filter element
  • Use: Off-road (enduro, motocross)
  • Fitment: TM Racing MX 450 4T (2015–2018)
  • Check: Compare with the application list before ordering
  • Road approval: None documented, off-road and competition use
What's includedEverything in the box▼
  • 1x Accossato by Marchald air filter
FitmentWhich bikes this fits▼
  • TM Racing MX 450 4T (2015–2018)
  • GasGas EC 125 (2007–2015)
  • GasGas EC 250 (2007–2015)
  • GasGas EC 300 (2007–2015)
  • Sherco SE 125 (2018–2020)
  • Sherco SE 250 (2014–2020)
  • Sherco SE 300 (2014–2020)
  • Sherco SEF 250 (2014–2020)
  • Sherco SEF 300 (2014–2020)
  • TM Racing EN 250 4T (2015–2018)
  • TM Racing EN 450 4T (2015–2018)
  • TM Racing MX 250 4T (2015–2018)
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