The K&N SU-1009 is a reusable, pleated high-flow replacement air filter for the Suzuki GSX-R1000. The manufacturer designed it as a high flow replacement air filter for the 2009 to 2016 Suzuki GSX-R1000 superbike. The manufacturer also separates it from its race part: for GSX-R1000s used in normal non-racing environments, it recommends the four layer OE replacement SU-1009, while the SU-1009R is built for closed-course asphalt racing. The main reason to pay more than for a paper stock element is that this filter can be cleaned and reused. Its coverage comes through the manufacturer's Million Mile program, which is meant to cover the filter for the life of the bike. Owners on user forums report mixed results, and one commonly repeated view is that a filter change alone yields only modest gains.
For street riders searching for a 2009-2016 GSX-R1000 K&N drop-in air filter, washable GSX-R1000 intake upgrade, or SU-1009 airbox replacement, this is the part the manufacturer points to. It fits directly inside the OE air box assembly, so no intake modification is required. Installation is straightforward: the manufacturer's installation sheet lists a screwdriver as the typical tool and a 5-10 minute job. Before you start, note that some owners on user forums say the airbox top would not seat flush once the factory gasket was removed, so check lid fit before tightening the screws.
The manufacturer states that the SU-1009 is the four layer OE replacement for normal non-racing use, while the SU-1009R is a race-specific filter intended for closed-course asphalt racing. The two parts are different, so confirm the part number before ordering.
The manufacturer lists the filter for the 2009 to 2016 GSX-R1000 and states that it fits inside the OE air box assembly. Confirm your model year against the manufacturer's application listing before purchase.
The manufacturer's guidance says to remove the stock o-ring from the air box base during installation. Owners on user forums report that the air box top may not seat properly once that gasket is removed, so check lid fit and follow the manufacturer's instructions.
Per the manufacturer's guidance, remove the air box lid and the stock filter, remove the stock o-ring from the air box base, drop in the K&N element, and reinstall the lid with the stock screws. The manufacturer's install sheet lists a screwdriver as the typical tool and a 5-10 minute job. Clean the housing sealing surface before installing, and check the lid seating before fully tightening the screws, since owners on user forums have reported seating problems.
