Yamaha YZ 250 F (03-12) DNA Air Filter

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Filter Use

Road

Filter Design

Round Design

OEM Part Number

4XM144510000

Filtering Efficiency

98%-99%

DNA replacement air filters are designed to increase hp and acceleration while providing excellent filtration. These filters are washable and reusable and are custom designed to fit into your existing factory air box. Their drop-in design means adding performance is simple.They offer bigger air-flow, with almost 99% filtering efficiency. It's ideal for Yamaha YZ series.

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This filter features DNA's Round Design.

Installation of the filter is very easy, simply follow the information that can be found in the YAMAHA workshop manual.

A perfect airtight sealing and trouble free filter installation for the user is guaranteed by using a high quality EVA seal, which is precisely cut and factory installed (glued).

The filtering efficiency is extremely high at 98-99% filtering efficiency, with 4 layers of DNA Cotton.

This DNA filter is designed as a High flow filter for road use.

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The DNA High Performance Air Filter in action

The DNA High Performance Air Filter anatomy

The DNA High Performance Air Filter manufacturing process

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This very special cotton is designed by DNA's R&D engineers for High Performance filtering purposes. The basic media is a non woven surgical cotton gauze with a modified TEX & THREAD, with extremely high strength of break. This unique cotton media, actually is a “hairy hybrid” featuring extremely high air flow rates and excellent filtering efficiency that exceeds 98%.

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The DNA Air Flow Tests

For the air flow tests, we use the most advanced flow bench available today. The ROTRONICS FlowScan, is a totally computerized flow bench that measures:

Mass of the air
Flow of the air
Temperature of the air
Absolute air pressure
Differential air pressure
Speed of the air at various points (Pit ot tubes)
Absolute humidity of the air

The complete procedure is automated and computer controlled, eliminating human errors.

The DNA Dyno Tests

For the Dyno Tests, we use the industry standard Dynojet chassis dyno equipped with eddy current load control, Dynojet 250LC. Our dyno cell is equipped with a variable flow air cooling system, designed to precisely simulate real world conditions.