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SU-1009R
$79.99 USD
MSRP $107.39 25.5% Off
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K&N SU-1009R Air Filter

Replacement Filters > Race Specific Air Filter
  • Designed to increase horsepower and acceleration
  • Designed for racing and track applications, not for street use
  • Washable and reusable lifetime air filter
  • Low restriction
This K&N racing air filter has just two layers of cotton to provide even lower air restriction than our replacement air filter for street vehicles. Unlike K&N replacement air filters, fuel management modifications will be necessary with this racing filter. K&N racing air filters are washable and reusable and come with a one year limited warranty. This product is for closed course competition use only.

More Info on K&N High Flow Air Filters for Sport Bikes & Street Motorcycles

Product Specifications

Air Filter ShapeUnique
Filter MaterialCotton Gauze
FlangesNone
Height3.375 in (86 mm)
Length11.063 in (281 mm)
Package Contents1 Air Filter, 1 K&N 1/2oz Filter Oil
Package Quantity1
Product Box Height4.75 in (121 mm)
Product Box Length14.38 in (365 mm)
Product Box Width6.38 in (162 mm)
Product StyleUnique Air Filters
Weight1.2 lb (0.6 kg)
Width5.688 in (144 mm)

Customer Feedback

I purchased and installed the KN Race Specific air filter on my 2011 GSXR 1000 race bike.  The race specific filter is less restrictive than a normal filter and the design allows for higher air flow, especially at lower RPM.  The filter provided a noticeable increase in low to mid RPM performance on the 2011 GSXR 1000.  I noticed the bike had more pull off the bottom, exiting corners – which is crucial for racing.  My bikes are equipped with air fuel tuners, which have a “self mapping” component.  The tuner added a marginal increase in fuel in the 3000 – 5000 rpm range, likely the result of the additional air flow.  Higher RPM performance is unchanged – as the air ducts pressurize the airbox, so air intake isn’t a problem.  This filter will increase your performance and reduce your laptimes by smoother acceleration and more power at lower RPMs, crucial for corner exit.

Scarrott Racing
Northern California
Definitely better power, transmission stayed in overdrive going up over the Coronado Bay bridge. Before, it would down shift to hold it at 50 mph speed limit. On the first tank now with the New K&N filter, usingTop Tier gas as usual. Nice tight fit in the filter box. Can actually hear the air noise in the intake tube. Had bought a K&N filter for my 2004 Ford E250 at a parts house the same day. (Brand Name) didn't carry the Suzuki filter, that's why I ordered direct...thanks for very fast service. Paul

Paul Oakes
Imperial Beach, California
Great fit and improved performance on my Suzuki DR Z400SM.

Thomas Slayback
Bloomington, Illinois