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K&N YA-2509 Air Filter

Replacement Filters > Replacement Air Filter
Rating Star 1 Rating Star 2 Rating Star 3 Rating Star 4 Rating Star 5   4.8 out of 5 stars   10 Customer Reviews
  • Designed to boost horsepower and rate of acceleration
  • Can be cleaned and used again
  • High air flow with exceptional filtration
  • Lasts up to 50,000 miles before cleaning is required depending on driving conditions
  • Works with original equipment manufacturer vehicle electronics
  • Emissions legal in all 50 US states
  • Will NOT void vehicle warranty
  • Million Mile Limited Warranty®
The K&N YA-2509 Air Filter fits some Yamaha XT250, and Yamaha XT250X models. See vehicle applications link for details.
K&N's replacement air filters are designed to increase horsepower and acceleration while providing excellent filtration. We make over 1,200 different replacement air filters for the majority of vehicles on the road. 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. With most vehicles you simply remove the disposable air filter and replace it with a K&N. See applicable instruction sheet for details. Our stock replacement air filters for street vehicles are covered by our famous K&N Million-Mile Limited Warranty and will be the last air filter your vehicle will ever need.

[More Information on K&N Replacement Air Filters]

Product Specifications

Air Filter ShapePanel
Filter MaterialCotton Gauze
Height1.063 in (27 mm)
Package Contents1 Air Filter
Package Quantity1
Product StyleUnique Air Filters
Width2.688 in (68 mm)
Length5.188 in (132 mm)
Weight0.4 lb (0.2 kg)
Filter Re-Oiling Amount0.12 oz (4 ml)
Product Box Height9.69 in (246 mm)
Product Box Length7.72 in (196 mm)
Product Box Width1.75 in (44 mm)

K&N YA-2509 Air Filter Product Reviews

Monday, March 27, 2017 - Part YA-2509

Israel Justice
Ogden, Utah
Thursday, March 9, 2017 - Part YA-2509
Awesome air filter. Could feel a difference in the top end.

Francis Kujawa
Jamestown, New York
Tuesday, August 23, 2016 - Part YA-2509
Great service and a perfect fit on my 2009 Yamaha XT250.

B. J. Fazio Jr
Deridder, Louisiana
Tuesday, June 21, 2016 - Part YA-2509
I'm glad you had a filter to fit my brand new Yamaha. I currently have 15 registered vehicles. Every one of them has a K&N air filter. Even my old 1980's three wheelers. I will continue to install them in my future vehicles.

David Mcmath
Lakeside, California
Thursday, January 21, 2016 - Part YA-2509
Perfect fit and the bike runs noticeably better. Been using K&N filter for over 25 years and they are in 4 trucks and 4 motorcycles and my lawnmower. If it has an engine, it has a K&N, even if I have to machine an air cleaner to hold one like for my lawnmower. Paper filters are a waste of money.

Boyd Bivens
Friendsville, Tennessee
Friday, November 13, 2015 - Part YA-2509
Fits with no problem increased airflow seems to be more responsive.

Las Vegas, Nevada
Monday, June 23, 2014 - Part YA-2509
This filter is a huge improvement over the stock paper filters. Right out of the box I noticed a little bit of a low end pick me up and a tiny bit better throttle response. For the 30 buckd to not have to screw around buying new filters I would highly recomend the investment. This filter seems to seat better then the stock filter having a rubber gasket as opposed to the the styrofoam gasket that leaked in pebbles and let dust on my 2014 xt250.

British Columbia, Canada